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SIEMENS Siprotec 4 Protection Relay

Leading Manufacturer of siemens siprotec 7sj66 relay, siemens siprotec 4 siprotec 6md63 bay controller unit bcu, siemens siprotec 4 siprotec 7sj64 protection relay, siemens siprotec 4 siprotec 7sa522 distance protection relay for transmission lines, siemens siprotec 4 siprotec 6md61 protection relay and siemens siprotec 4 siprotec 7sd5 protection relay from Navi Mumbai.
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Siemens Siprotec 7SJ66 Relay
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Siemens Siprotec 7SJ66 Relay

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Product Details:
BrandSiemens
Voltage220 V
Current1-5A
Model Number7SJ66
Power SourceElectric
Frequency50/60 Hz
Display8 Small Display (lines)
Output Contact36 Binary Inputs (max) and 24 Binary Outputs (max) incl. Life contact
Size240x128 Large, graphical Display (Pixel)
Protection Functions50, 50N,50, 50N,51, 51V, 51N,67, 67N,67Ns/50Ns,59N/64,67Ns,87N,50BF,79M,25,46,47,49,48,51M,14,66/86
Current Inputs (max)4
Case (x19'')1/3; 1/2
Push Buttons4
LEDs (max)16
PSU Variants110 to 250 V DC,115 to 230 V AC
Front User InterfaceYes
IEC 60870-5-103optional (additional price)
MODBUS TCPoptional (additional price)
DIGSIDIGSI (additional price)
IEC 61850-8-1optional (additional price)
RTD-unit connectionoptional (additional price)
Time SynchronisationYes
Rotection Functions
  • Overcurrent protection
  • Directional overcurrent protection
  • Sensitive directional ground-fault detection
  • Displacement voltage
  • Intermittent ground-fault protection
  • Directional intermittent ground fault protect
  • High-impedance restricted ground fault
  • Inrush restraint
  • Motor protection
  • Overload protection
  • Temperature monitoring
  • Under-/overvoltage protection
  • Under-/overfrequency protection
  • Rate-of-frequency-change protection
  • Power protection (e.g. reverse, factor)
  • Undervoltage controlled reactive power protection
  • Breaker failure protection
  • Negative-sequence protection
  • Phase-sequence monitoring
  • Synchro-check
  • Fault locator
  • Lockout
  • Auto-reclosure

Control functions/programmable logic:
  • Commands for control of CB and of isolators
  • Graphical visualization of switch positions
  • Control via keyboard, binary inputs, DIGSI 4 or SCADA system
  • User-defined logic with CFC (e.g. interlocking)

Monitoring Functions:
  • Operational measured values V, I, f
  • Energy metering values Wp,Wq
  • Circuit-breaker wear monitoring
  • Slave pointer
  • Trip circuit supervision
  • Fuse failure monitor
  • 8 oscillographic fault records
  • Motor statistics

Communication Interfaces:
  • System interface protocols: IEC 60870-5-103, IEC 61850, Modbus RTU, DNP3
  • Electrical and optical interface
  • RSTP (Redundancy Protocol for Ethernet)
  • Service interface for DIGSI 4 or RTD-Box
  • Front USB interface for DIGSI 4
  • Time synchronization via IRIG B, DCF77

Hardware:
  • Spring-type terminals
  • 4 current transformers
  • 4 voltage transformers
  • 16/22/36 binary inputs
  • 7/10/23 output relays
  • Graphic or 8 line display

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Siemens Siprotec 4 Siprotec 6MD63 Bay Controller Unit BCU
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Siemens Siprotec 4 Siprotec 6MD63 Bay Controller Unit BCU

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Product Details:
Voltage10 to 250 V DC
Current4 Current Inputs (max)
Model Number6MD63
Power SourceElectric
Frequency50/60 Hz
Display240x120 Large,graphical Display (Pixel)
Output Contact37 Binary Inputs (max) and 21 Binary Outputs (max) incl. Life contact
Body MaterialMS
Transducer inputs (0-20 mA) (max)2
Case (x19'')1/2; 1/1
Push Buttons4
LEDs (max)16
PSU VariantsDC 24-48; DC 60-250 /AC 115-230
Front User InterfaceYes
IEC 60870-5-103optional (additional price)
IEC 60870-5-104optional (additional price)
MODBUS TCPoptional (additional price)
DNP3 serialoptional (additional price)
DNP 3 TCPoptional (additional price)
DIGSIoptional (additional price)
IEC 61850-8-1optional (additional price)
IEC 61850-9-2optional (additional price)
RTD-unit connectionoptional (additional price)
20 mA unit connectionoptional (additional price)
RSTP (Ethernet ring redundancy)optional (additional price)
PRP V1 (Parallel Redundancy Protocol)optional (additional price)
HSR (High available Seamless Ring configuration)optional (additional price)
Further Ethernet protocols on Ethernet modulesoptional (additional price)
Time SynchronisationYes
The 6MD63 bay control unit is a flexible, easy-to-use control unit. It is optimally tailored for medium-voltage applications but can also be used in high-voltage substations.

The 6MD63 bay control unit has the same design (look and feel) as the other protection and combined units of the SIPROTEC 4 relay series. Configuration is also performed in a standardized way with the easy-to-use DIGSI 4 configuration tool.

For operation, a large graphic display with a keyboard is available. The important operating actions are performed in a simple and intuitive way, e.g. alarm list display or switchgear control. The operator panel can be mounted separately from the relay, if required. Thus, flexibility with regard to the mounting position of the unit is ensured.

Integrated key-operated switches control the switching authority and authorization for switching without interlocking.

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Siemens Siprotec 4 SIPROTEC 7SJ64 Protection Relay
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Siemens Siprotec 4 SIPROTEC 7SJ64 Protection Relay

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Product Details:
BrandSiemens
Current4 Current Inputs (max)
Voltage220 V
Model Number7SJ64
PhaseSingle Phase
Power SourceElectric
Frequency50/60 Hz
Display240x120 Large,graphical Display (Pixel)
Output Contact48 Binary Inputs (max) and 26 Binary Outputs (max) incl. Life contact
Protection Functions50,50N,50,50N,51,51V,51N,67,67N,67Ns/50Ns,59N/64,67Ns,87N,50BF,79M,25,46,47,49,48,51M,14,6
Case (x19'')1/3-1/1
Push Buttons4
LEDs (max)16
PSU VariantsDC 24-48;DC 60-250/AC115-230
Front User InterfaceYes
IEC 60870-5-103optional (additional price)
Profibus FMS/DP, Slaveoptional (additional price)
MODBUS RTU SLAVEoptional (additional price)
PROFINET I/Ooptional (additional price)
DNP3 serialoptional (additional price)
DNP 3 TCPoptional (additional price)
DIGSIDIGSI (additional price)
IEC 61850-8-1optional (additional price)
RTD-unit connectionoptional (additional price)
20 mA unit connectionoptional (additional price)
RSTP (Ethernet ring redundancy)optional (additional price)
PRP V1 (Parallel Redundancy Protocol)optional (additional price)
HSR (High available Seamless Ring configuration)optional (additional price)
Further Ethernet protocols on Ethernet modulesoptional (additional price)
Time SynchronisationYes

The SIPROTEC 4 7SJ61 relays can be used for line protection of high and medium voltage networks with earthed (grounded), low-resistance earthed, isolated or compensated neutral point. When protecting motors, the SIPROTEC 4 7SJ61 is suitable for asynchronous machines of all sizes. The relay performs all functions of backup protection supplementary to transformer differential protection ???

 

The relay provides control of the circuit breaker, further switching devices and automation functions. The integrated programmable logic (CFC) allows the user to implement their own functions, e. g. for the automation of switchgear (interlocking). The user is also allowed to generate user-defined messages. The flexible communication interfaces are open for modern communication architectures with control systems.

 

Protection functions

  • Overcurrent protection (definite-time/inverse-time/user-def.)
  • Sensitive earth-fault detection
  • Intermittent earth-fault protection
  • High-impedance restricted earth fault
  • Inrush - Current detection
  • Motor protection
    • Undercurrent monitoring
    • Starting time supervision
    • Restart inhibit
    • Locked rotor
    • Load jam protection
  • Overload protection
  • Temperature monitoring
  • Breaker failure protection
  • Negative-sequence protection
  • Auto-reclosure
  • Lockout

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Siemens Siprotec 4 Siprotec 7SA522 Distance Protection Relay For Transmission Lines
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Siemens Siprotec 4 Siprotec 7SA522 Distance Protection Relay For Transmission Lines

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Product Brochure
Product Details:
Current4 Current Inputs (max)
Model Number7SA522
Power SourceElectric
Frequency50/60 Hz
Display4 Small Display (lines)
Output Contact24 Binary Inputs (max) and 44 Binary Outputs (max) incl. Life contact
Rated Current1 or 5 A (selectable)
Rated Voltage80 to 125 V (selectable)
Protection Functions21/21N,21FL,50N/51N/67N,50/51/67,50,68/68T,85/21,27WI,85/67N,50HS,50BF,59/27,81O/U,25,79,74
Case (x19'')1/2; 1/1
Push Buttons4
LEDs (max)16
PSU VariantsDC 24-48; DC 60-125 DC 110-250 /AC 115-230
Front User InterfaceYes
IEC 60870-5-103optional (additional price)
Profibus FMS/DP, Slaveoptional (additional price)
DNP3 serialoptional (additional price)
DIGSIDIGSI (additional price)
IEC 61850-8-1optional (additional price)
RSTP (Ethernet ring redundancy)optional (additional price)
PRP V1 (Parallel Redundancy Protocol)optional (additional price)
HSR (High available Seamless Ring configuration)optional (additional price)
Further Ethernet protocols on Ethernet modulesoptional (additional price)
Time SynchronisationYes

The SIPROTEC 7SA522 relay provides full-scheme distance protection and incorporates all functions usually required for the protection of a power line. The relay is designed to provide fast and selective fault clearance on transmission and subtransmission cables and overhead lines with or without series capacitor compensation. The power system star point can be solid or resistance grounded (earthed), resonant-earthed via Peterson coil or isolated. The SIPROTEC 7SA522 is suitable for single-pole and three-pole tripping applications with and without tele (pilot) protection schemes.

The SIPROTEC 7SA522 incorporates several protective functions usually required for transmission line protection.

  • High-speed tripping time
  • Suitable for cables and overhead lines with or without series capacitor compensation
  • Self-setting power swing detection for power swing frequencies up to 7 Hz
  • Digital relay-to-relay communication for two and three terminal topologies
  • Adaptive auto-reclosure (ADT)

FunctionsProtection functions:
  • Non-switched distance protection with 6 measuring systems (21/21N)
  • High resistance ground (earth)-fault protection for single and three-phase tripping (50N, 51N, 67N)
  • Tele (pilot) protection (85)
  • Fault locator (FL)
  • Power swing detection / tripping (68/68T)
  • Phase-overcurrent protection (50/51)
  • STUB bus overcurrent protection (50STUB)
  • Switch-onto-fault protection (50HS)
  • Over/undervoltage protection (59/27)
  • Over/underfrequency protection (81O/U)
  • Auto-reclosure (79)
  • Synchro-check (25)
  • Breaker failure protection (50BF)

Control functions:
  • Commands for control of CB and isolators


Monitoring functions:
  • Trip circuit supervision (74TC)
  • Self-supervision of the relay
  • Measured-value supervision
  • Event logging/fault logging
  • Oscillographic fault recording
  • Switching statistics

Front design:
  • User-friendly local operation with numeric keys
  • LEDs for local alarm
  • PC front port for convenient relay setting
  • Function keys

Communication interfaces:
  • Front interface for connecting a PC

  • System interface for connecting to a control system via various protocols
    - IEC 61850 Ethernet
    - IEC 60870-5-103 protocol
    - PROFIBUS-FMS/-DP
    - DNP 3.0

  • 2 serial protection data interfaces for tele (pilot) protection
  • Rear-side service/modem interface
  • Time synchronisation via IRIG B or DCF77 or system interface

Hardware:
  • Binary inputs: 8/16/24
  • Output relays: 16/24/32
  • High-speed trip outputs: 5 (optional)

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Siemens Siprotec 4 Siprotec 6MD61 Protection Relay
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Siemens Siprotec 4 Siprotec 6MD61 Protection Relay

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Product Brochure
Product Details:
Voltage220 V
Current4 Current Inputs (max)
PhaseSingle Phase
Power SourceElectric
Frequency50/60 Hz
Display240x120 Large,graphical Display (Pixel)
Output Contact80 Binary Inputs (max) and 543 Binary Outputs (max) incl. Life contact
Body MaterialMS
Transducer inputs (0-20 mA) (max)2
Case (x19'')1/2; 1/1
Push Buttons4
LEDs (max)16
PSU VariantsDC 24-48; DC 60-250 /AC 115-230
Front User InterfaceYes
IEC 60870-5-103optional (additional price)
IEC 60870-5-104optional (additional price)
MODBUS TCPoptional (additional price)
DNP3 serialoptional (additional price)
DNP 3 TCPoptional (additional price)
DIGSIoptional (additional price)
IEC 61850-8-1optional (additional price)
IEC 61850-9-2optional (additional price)
RTD-unit connectionoptional (additional price)
20 mA unit connectionoptional (additional price)
RSTP (Ethernet ring redundancy)optional (additional price)
PRP V1 (Parallel Redundancy Protocol)optional (additional price)
HSR (High available Seamless Ring configuration)optional (additional price)
Further Ethernet protocols on Ethernet modulesoptional (additional price)
Time SynchronisationYes

Electric arcs are among the most dreaded fault scenarios in power supply engineering. They can be caused by a multitude of factors, such as aging of the insulation, environmental conditions as well as operating errors. Electric arcs can cause heavy damage to switchgear and present a serious hazard to operating personnel.

 

The SIPROTEC 5 arc protection detects electric arcs through an optical sensor. Arcs are detected reliably and quickly as they develop, and the protective device can trip immediately and without delay times.The arc protection module is part of the new SIPROTEC 5 series of modular, flexible and intelligent bay devices and can be used in the following device types:

  • SIPROTEC 7SJ8
  • SIPROTEC 7SA8
  • SIPROTEC 7SD8
  • SIPROTEC 7SL8
  • SIPROTEC 7VK8
  • SIPROTEC 7UT8
  • SIPROTEC 7SK8
  • SIPROTEC 7UM8

Functions:

  • Reliable arc detection
  • Extremely fast tripping time
  • Minimization of thermal damage
  • Higher personal safety
  • Minimization of downtimes
  • EMI safety thanks to purely optical sensors
  • Quick and easy retrofitting

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Siemens Siprotec 4 Siprotec 7SD5 Protection Relay
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Siemens Siprotec 4 Siprotec 7SD5 Protection Relay

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Product Brochure
Product Details:
Voltage110 to 250 V DC
Current1 or 5 A
PhaseSingle Phase
Power SourceElectric
Frequency50/60 Hz
Display4 Small Display (lines)
Output Contact24 Binary Inputs (max) and 33 Binary Outputs (max) incl. Life contact
Protection Functions87L,87T,87N,85,86,21/21N,FL,68/68T,85/21,27WI,50N/51N/67N,85/67N,50/50N/51/51N,50HS,59/27,81O/U,25,7
Current Inputs (max)4
Case (x19'')1/2; 1/1
Push Buttons4
LEDs (max)16
PSU VariantsDC 24-48; DC 60-125 DC 110-250 /AC 115-230
Front User InterfaceYes
IEC 60870-5-103optional (additional price)
Profibus FMS/DP, Slaveoptional (additional price)
DNP3 serialoptional (additional price)
DIGSIDIGSI (additional price)
IEC 61850-8-1optional (additional price)
RSTP (Ethernet ring redundancy)optional (additional price)
PRP V1 (Parallel Redundancy Protocol)optional (additional price)
HSR (High available Seamless Ring configuration)optional (additional price)
Further Ethernet protocols on Ethernet modulesoptional (additional price)
Time SynchronisationYes

The 7SD5 relay provides full scheme differential protection and incorporates all functions usually required for the protection of power lines. It is designed for all power and distribution levels and protects lines with two up to six line ends. The relay is designed to provide high-speed and phase-selective fault clearance. The relay uses fiber-optic cables or digital communication networks to exchange telegrams and includes special features for the use in multiplexed communication networks. Also, pilot wires connections can be used with an external converter. This contributes toward improved reliability and availability of the electrical power system. The relay is suitable for single and three-phase tripping applications for two up to six line ends.

 

The 7SD5 has the following features:

  • 2 full-scheme main protections in one unit (differential and distance protection)
  • High-speed tripping 10 – 15 ms
  • The serial protection interfaces (R2R interfaces) of the relays can flexibly be adapted to the requirements of all communication media available.
  • If the communication method is changed, flexible retrofitting of communication modules to the existing configuration is possible.
  • Tolerates loss of one data connection in a ring topology (routing in 120 ms). The differential protection scheme is fully available in a chain topology.
  • Tolerates loss of one data connection in a ring topology (routing in 120 ms). The differential protection scheme is fully available in a chain topology.
  • Browser-based commissioning tool.
  • Fault locator for one and two terminal measurements for high accuracy on long lines with high load and high fault resistance.
  • Capacitive charge current compensation increases the sensitivity of the differential protection on cables and long lines.

Protection Functions

  • Differential protection with phase segregated measurement (87L, 87T)
  • Restricted ground-fault protection (87N) if a transformer is within the protection zone
  • Sensitive measuring stage for high-resistance faults
  • Non-switched distance protection with 6 measuring systems (21/21N)
  • High resistance ground (earth)-fault protection for single and three-pole tripping (50N/51N/67N)
  • Phase-selective inter-tripping (85)
  • Ground-fault detection in isolated and resonant-grounded networks
  • Tele (pilot) protection (85/21, 85/67N)
  • Weak-infeed protection (27WI)
  • Fault locator (FL)
  • Power swing detection/tripping (68/68T)
  • 3-stage overcurrent protection (50, 50N, 51, 51N)
  • STUB bus protection (50 STUB)
  • Switch-onto-fault protection (50HS)
  • Over/under voltage protection (59/27)
  • Over/under frequency protection (81O/U)
  • Auto-reclosure (79), Synchro-check (25)
  • Breaker failure protection (50BF)
  • Overload protection (49)
  • Lockout function (86)

Control functions

  • Commands for control of circuit-breakers (isolators)

Monitoring functions

  • Self-supervision of relay and protection data (R2R) communication
  • Trip circuit supervision (74TC)
  • Measured-value supervision
  • Time metering of operating hours
  • Oscillographic fault recording
  • Event logging/fault logging
  • Switching Statistics

Front design

  • User-friendly local operation
  • PC front port for relay setting
  • Function keys and 14 LEDs f. local alarm

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Siemens Siprotec 4 Siprotec 7VK61 Breaker Management Protective Relay
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Siemens Siprotec 4 Siprotec 7VK61 Breaker Management Protective Relay

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Product Brochure
Product Details:
Current4 Current Inputs (max)
Model Number7VK61
Power SourceElectric
Display4 Small Display (lines)
Frequency50/60 Hz
Output Contact20 Binary Inputs (max) and 19 Binary Outputs (max) incl. Life contact
Rated Current1 or 5 A
Rated Voltage110,250 V DC
Protection Functions50BF,59/27,25,79,74TC,86
Case (x19'')1/3-1/2
Push Buttons4
LEDs (max)9/16
PSU VariantsDC 24-48; DC 60-250 /AC 115-230
Front User InterfaceYes
IEC 60870-5-103optional (additional price)
Profibus FMS/DP, Slaveoptional (additional price)
DNP3 serialoptional (additional price)
DIGSIDIGSI (additional price)
IEC 61850-8-1optional (additional price)
RSTP (Ethernet ring redundancy)optional (additional price)
PRP V1 (Parallel Redundancy Protocol)optional (additional price)
HSR (High available Seamless Ring configuration)optional (additional price)
Further Ethernet protocols on Ethernet modulesoptional (additional price)
Time SynchronisationYes
FunctionsProtection functions:
  • Single and/or three-pole auto-reclosure
  • Synchro-check with live/dead line/bus measurement
  • Closing under asynchronous conditions (consideration of CB operating time)
  • Circuit-breaker failure protection with two stages (single and three-pole with/without current)
  • End-fault protection
  • Pole-discrepancy protection
  • Overvoltage/undervoltage protection

Control function:
  • Commands f. ctrl. of CB and isolators


Monitoring functions:
  • Operational measured values
  • Self-supervision of the relay
  • Event buffer and fault protocols
  • Oscillographic fault recording
  • Monitoring of CB auxiliary contacts
  • Switching statistics

Features:
  • All functions can be used separately
  • Initiation/start by phase-segregated or 3-pole trip commands
  • Auto-reclosure for max. 8 reclose cycles
  • Evolving/sequential trip recognition
  • Auto-reclosure with ADT, DLC, RDT
  • Synchro-check with ΔV, Δ , Δf measurement
  • Breaker failure protection with highly secure 2-out-of-4 current check detectors
  • Breaker failure protection with short reset time and negligible overshoot time

Communication interfaces:
  • Front interface for connecting a PC

  • System interface for connecting to a control system via various protocols
    – IEC 61850 Ethernet
    – IEC 60870-5-103 protocol
    – PROFIBUS-FMS/-DP
    – DNP 3.0

  • Rear-side service/modem interface

  • Time synchronization via
    – IRIG-B or DCF77 or system interface


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Siprotec 7ut63 Differential Transformer Protection Relay, Overload Protection Relay
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Siprotec 7ut63 Differential Transformer Protection Relay, Overload Protection Relay

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Product Brochure
Product Details:
Current14 Current Inputs (max)
Model Number7UT63
PhaseSingle Phase
Power SourceElectric
Frequency50/60 Hz
Display240x120 Large,graphical Display (Pixel)
Output Contact29 Binary Inputs (max) and 25 Binary Outputs (max) incl. Life contact
Body MaterialMS
Protection Functions87T/G/M/L,87 N,50/51,50/51N,50/51G,46,49,49,24,59,27,81,32R,32F,60FL,50 BF,38,86,74 TC,27,32,47,50
Case (x19'')1/1
Push Buttons4
LEDs (max)16
PSU VariantsDC 24-48; DC 60-250 /AC 115-230
Front User InterfaceYes
IEC 60870-5-103optional (additional price)
Profibus FMS/DP, Slaveoptional (additional price)
MODBUS RTU SLAVEoptional (additional price)
PROFINET I/Ooptional (additional price)
DNP3 serialoptional (additional price)
DIGSIDIGSI (additional price)
IEC 61850-8-1optional (additional price)
RTD-unit connectionoptional (additional price)
20 mA unit connectionoptional (additional price)
RSTP (Ethernet ring redundancy)optional (additional price)
PRP V1 (Parallel Redundancy Protocol)optional (additional price)
HSR (High available Seamless Ring configuration)optional (additional price)
Further Ethernet protocols on Ethernet modulesoptional (additional price)
Time SynchronisationYes
Features:
  • Differential protection for 2- up to 3-winding transformers up to 5 ends (3-/1-phase)
  • Differential protection for motors and generators
  • Differential protection for short 2 up to 5 terminal lines
  • Differential protection for busbars up to 12 feeders (phase-segregated or with summation CT)

Protection functions:

  • Differential protection with phase-segregated measurement
  • Sensitive measuring for low-fault currents
  • Fast tripping for high-fault currents
  • Restraint against inrush of transformer
  • Phase /ground overcurrent protection
  • Overload protection with or without temperature measurement
  • Negative-sequence protection
  • Breaker failure protection
  • Low/high-impedance restricted ground fault (REF)
  • Voltage protection functions

Control functions:

  • Commands for control of circuit-breakers and isolators
  • 7UT63x: Graphic display shows position of switching elements, local/remote switching by key-operated switch
  • Control via keyboard, binary inputs, DIGSI 4 or SCADA system
  • User-defined logic with CFC

Monitoring functions:

  • Self-supervision of the relay
  • Trip circuit supervision
  • Oscillographic fault recording
  • Permanent differential and restraint current measurement, extensive scope of operational values

Communication interfaces:

  • PC front port for setting with DIGSI 4
  • System interface IEC 61850 Ethernet - IEC 60870-5-103 protocol, - PROFIBUS-FMS/-DP, MODBUS or DNP 3.0
  • Service interface for DIGSI 4 (modem)/ temperature monitoring (thermo-box)
  • Time synchronization via IRIG-B/DCF 77

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Siemens Siprotec 4 Siprotec 7UM62 Generator Protection Relay
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Siemens Siprotec 4 Siprotec 7UM62 Generator Protection Relay

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Product Brochure
Product Details:
Current8 Current Inputs (max)
Model Number7UM62
Power SourceElectric
Frequency50/60 Hz
Display4 Small Display (lines)
Output Contact15 Binary Inputs (max) and 21 Binary Outputs (max) incl. Life contact
Rated Current1 or 5A
Rated Voltage100 to 125 V
Protection Functions59N,64G,67G,50/51GN,(64R),49,51,50/51/67,51V,59,27,81,32R,24,60FL,74TC,32F,40,46,50BF
Analog measured value outputs (0-20 mA) (max)4
Case (x19'')1/2; 1/1
Large, graphical Display (Pixel)240x120
Push Buttons4
LEDs (max)9/16
PSU VariantsDC 24-48; DC 60-250 /AC 115-230
Front User InterfaceYes
IEC 60870-5-103optional (additional price)
Profibus DP, Slaveoptional (additional price)
MODBUS RTU SLAVEoptional (additional price)
DNP3 serialoptional (additional price)
DIGSIDIGSI (additional price)
IEC 61850-8-1optional (additional price)
RTD-unit connectionoptional (additional price)
20 mA unit connectionoptional (additional price)
RSTP (Ethernet ring redundancy)optional (additional price)
PRP V1 (Parallel Redundancy Protocol)optional (additional price)
HSR (High available Seamless Ring configuration)optional (additional price)
Further Ethernet protocols on Ethernet modulesoptional (additional price)
Time SynchronisationYes
Functions

Standard version
Scope of basic version plus:

  • Inadvertent energization protection
  • 100 %-stator earth-fault protection with 3rd harmonic
  • Impedance protection

Full version
Scope of standard version plus:

  • DC voltage protection
  • Overcurrent protection during start-ups
  • Earth-current differential protection
  • Out-of-step protection

Additional version
Available for each version:

  • Sensitive rotor earth-fault protection (1-3 Hz method)
  • Stator earth-fault protection with 20 Hz voltage
  • Rate-of-frequency-change protection
  • Vector jump supervision

Monitoring Functions:
  • Trip circuit supervision
  • Fuse failure monitor
  • Operational measured values V, I, f,…
  • Every metering value Wp,Wq
  • Time metering of operation hours
  • Self-supervision of relay
  • 8 oscillographic fault records

Communication interfaces:
  • System interface
    – IEC 61850 protocol
    – IEC 60870-5-103 protocol
    – PROFIBUS-DP
    –MODBUS RTU
    – DNP 3.0


Hardware:
  • Analog inputs
  • 8 current transformers
  • 4 voltage transformers
  • 7/15 binary inputs
  • 12/20 output relays

Front design:
  • User-friendly local operation
  • 7/14 LEDs for local alarm
  • Function keys
  • Graphic display with 7UM623

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Siemens Siprotec 4 Siprotec 7SA61 Distance Protection Relay For All Voltage Levels
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Siemens Siprotec 4 Siprotec 7SA61 Distance Protection Relay For All Voltage Levels

Product Price : Get Latest Price
Product Brochure
Product Details:
Voltage220/240 V
Current (Amp)1 or 5 A
Power SourceElectric
Frequency50/60 Hz
Display4 Small Display (lines)
Output Contact33 Binary Inputs (max) and 34 Binary Outputs (max) incl. Life contact
Body MaterialMS
Protection Functions21/21N,21FL,50N/51N/67N,50/51/67,50,68/68T,85/21,27WI,85/67N,50HS,50BF,59/27,81O/U,25,79,74
Analog measured value outputs (0-20 mA) (max)2
Case (x19'')1/3-1/1
Push Buttons4
LEDs (max)9/16
PSU VariantsDC 24-48; DC 60-125 DC 110-250 /AC 115-230
Front User InterfaceYes
IEC 60870-5-103optional (additional price)
Profibus FMS/DP, Slaveoptional (additional price)
DNP3 serialoptional (additional price)
DIGSIDIGSI (additional price)
IEC 61850-8-1optional (additional price)
RSTP (Ethernet ring redundancy)optional (additional price)
PRP V1 (Parallel Redundancy Protocol)optional (additional price)
HSR (High available Seamless Ring configuration)optional (additional price)
Further Ethernet protocols on Ethernet modulesoptional (additional price)
Time SynchronisationYes
Functions Protection functions:
  • Non-switched distance protection with 6 measuring systems (21/21N)
  • High resistance earth-fault protection for single and three-phase tripping (50N, 51N, 67N)
  • Earth-fault detection in isolated and resonant-earthed networks
  • Tele (pilot) protection (85)
  • Fault locator (FL)
  • Power-swing detection/tripping (68/68T)
  • Phase-overcurrent protection (50/51)
  • Switch-onto-fault protection(50HS)
  • STUB bus overcurrent protection (50STUB)
  • Overvoltage/undervoltage protection(59/27)
  • Over/underfrequency protection (81O/U)
  • Auto-reclosure (79)
  • Synchro-check (25)
  • Breaker failure protection (50BF)
  • Thermal overload protection (49)

Control functions:
  • Commands for control of c.b. and isolators


Monitoring functions:
  • Trip circuit supervision (74TC)
  • Self-supervision of the relay
  • Measured-value supervision
  • Event logging
  • Fault logging
  • Oscillographic fault recording
  • Switching statistics

Front Design:
  • Easy operation with numeric keys
  • Function keys
  • LEDs for local alarm
  • PC front port for convenient relay setting

Communication interfaces:
  • Front interface for connecting a PC

  • System interface for connecting to a control system via various protocols
    - IEC 60870-5-103 protocol
    - PROFIBUS-FMS/-DP
    - DNP 3.0
    - IEC 61850 Ethernet

  • 1 serial protection data interface for teleprotection

  • Rear-side service/modem interface

  • Time synchronization via - IRIG-B or DCF 77 or - System interface


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Siprotec 7UT612 Transformer Differential Protection Relay - Automation Device
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Siprotec 7UT612 Transformer Differential Protection Relay - Automation Device

Product Price : Get Latest Price
Product Brochure
Product Details:
Current7 Current Inputs (max)
Model Number7UT612
Power SourceElectric
Frequency50/60 Hz
Display4 Small Display (lines)
Output Contact3 Binary Inputs (max) and 5 Binary Outputs (max) incl. Life contact
Rated Current0.1 or 1 or 5A
Rated Voltage110 to 250 V DC and
Permissible Tolerance-20 to +20 %
Body MaterialMS
Protection Functions" 87T/G/M/L,87 N,50/51,50/51N,50/51G,46,49,49,24,59,27,81,32R,32F,60FL,50 BF,38,86,74 TC,27,32,47
Case (x19'')1/3
Push Buttons4
LEDs (max)9
PSU VariantsDC 24-48; DC 60-250 /AC 115-230
Front User InterfaceYes
IEC 60870-5-103optional (additional price)
Profibus FMS/DP, Slaveoptional (additional price)
MODBUS RTU SLAVEoptional (additional price)
PROFINET I/Ooptional (additional price)
DNP3 serialoptional (additional price)
DIGSIDIGSI (additional price)
IEC 61850-8-1optional (additional price)
RTD-unit connectionoptional (additional price)
20 mA unit connectionoptional (additional price)
RSTP (Ethernet ring redundancy)optional (additional price)
PRP V1 (Parallel Redundancy Protocol)optional (additional price)
HSR (High available Seamless Ring configuration)optional (additional price)
Further Ethernet protocols on Ethernet modulesoptional (additional price)
Time SynchronisationYes
Function Overview:
  • Differential protection for two-winding transformers (3-/1-phase)
  • Differential protection for motors and generators
  • Differential protection for short lines
  • Differential protection for busbars up to 7 feeders (phase-segregated or with summation CT)

Protection Functions:
  • Differential protection with phase-segregated measurement
  • Sensitive measuring stage for low-fault currents
  • Fast tripping for high-fault currents
  • Restraint against inrush of the transformer
  • Phase/ground-overcurrent protection
  • Overload protection with or without temperature measurement
  • Negative-sequence protection
  • Breaker failure protection
  • Low-or high-impedance restricted earth fault (REF)

Control Functions:
  • Commands for control of c.b. and isolators
  • Control via keyboard, binary inputs, DIGSI 4 or SCADA system
  • User-defined logic with CFC

Monitoring Functions:
  • Self-supervision of the relay
  • Trip circuit supervision
  • Oscillographic fault recording
  • Permanent differential and restraint current measurement, extensive scope of operational values

Communication Interfaces:
  • PC front port for setting with DIGSI 4
  • System interface IEC 61850 Ethernet - IEC 60870-5-103 protocol - PROFIBUS-FMS - PROFIBUS-DP - MODBUS - DNP 3.0
  • Service interface for DIGSI 4 (modem)/temperature monitoring (thermo-box)
  • Time synchronization via IRIG-B/DCF 77

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Siemens Siprotec 4 Siprotec 7SA63 Protective Relays
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Siemens Siprotec 4 Siprotec 7SA63 Protective Relays

Product Price : Get Latest Price
Product Brochure
Product Details:
Voltage220/240 V
Current4 Current Inputs (max)
Model Number7sa63
PhaseSingle Phase
Power SourceElectric
Frequency50/60 Hz
Display4 Small Display (lines)
Output Contact33 Binary Inputs (max) and 34 Binary Outputs (max) incl. Life contact
Size240x120 Large,graphical Display (Pixel)
Protection Functions21/21N,21FL,50N/51N/67N,50/51/67,50,68/68T,85/21,27WI,85/67N,50HS,50BF,59/27,81O/U,25,79,74
Analog measured value outputs (0-20 mA) (max)2
Case (x19'')1/3-1/1
Push Buttons4
LEDs (max)9/16
PSU VariantsDC 24-48; DC 60-125 DC 110-250 /AC 115-230
Front User InterfaceYes
IEC 60870-5-103optional (additional price)
Profibus FMS/DP, Slaveoptional (additional price)
DNP3 serialoptional (additional price)
DIGSIDIGSI (additional price)
IEC 61850-8-1optional (additional price)
RSTP (Ethernet ring redundancy)optional (additional price)
PRP V1 (Parallel Redundancy Protocol)optional (additional price)
HSR (High available Seamless Ring configuration)optional (additional price)
Further Ethernet protocols on Ethernet modulesoptional (additional price)
Time SynchronisationYes

The SIPROTEC 7SA6 distance protection relay is a universal relay for protection, control and automation with a graphic display on the basis of the SIPROTEC 4 system. Its high level of flexibility makes it suitable to be implemented at all voltage levels. With this relay you are ideally equipped for the future: it offers security of investment and also saves on operating costs.

 

High-speed tripping time

Impedance setting range allows very small settings for the protection of very short lines

 

Self-setting detection for power swing frequencies up to 7 Hz

Current transformer saturation detector prevents non-selective trapping by distance protection in the event of CT saturation.

 

Phase-segregated teleportation for improved selectivity and availability

 

Digital relay-to-relay communication by means of an integrated serial protection data interface

 

Adaptive auto-reclosure (ADT)

 

Protection functions

  • Non-switched distance protection with 6 measuring systems (21/21N)
  • High resistance earth-fault protection for single and three-phase tripping (50N, 51N, 67N)
  • Earth-fault detection in isolated and resonant-earthed networks
  • Tele (pilot) protection (85)
  • Fault locator (FL)
  • Power-swing detection/tripping (68/68T)
  • Phase-overcurrent protection (50/51)
  • STUB bus overcurrent protection (50STUB)
  • Switch-onto-fault protection(50HS)
  • STUB bus overcurrent protection (50STUB)
  • Overvoltage/undervoltage protection(59/27)
  • Over/underfrequency protection (81O/U)
  • Auto-reclosure (79)
  • Synchro-check (25)
  • Breaker failure protection (50BF)
  • Thermal overload protection (49)

Control functions

  • Commands for control of c.b. and isolators

Monitoring functions

  • Trip circuit supervision (74TC)
  • Self-supervision of the relay
  • Measured-value supervision
  • Event logging
  • Fault logging
  • Oscillographic fault recording
  • Switching statistics

Front Design

  • Easy operation with numeric keys
  • Function keys
  • LEDs for local alarm
  • PC front port for convenient relay setting

Communication interfaces

  • Front interface for connecting a PC
  • System interface for connecting to a control system via various protocols
    • IEC 60870-5-103 protocol
    • PROFIBUS-FMS/-DP
    • DNP 3.0
    • IEC 61850 Ethernet
  • 1 serial protection data interface for teleportation
  • Rear-side service/modem interface

Time synchronization via - IRIG-B or DCF 77 or - System interface

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Siprotec 7UT613 Transformer Differential Protection Relay - Automation Device
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Siprotec 7UT613 Transformer Differential Protection Relay - Automation Device

Product Price : Get Latest Price
Product Brochure
Product Details:
Voltage220 V
Current11 Current Inputs (max)
Model Number7UT613
PhaseSingle Phase
Power SourceElectric
Frequency50 Hz
Display4 Small Display (lines)
Output Contact5 Binary Inputs (max) and 9 Binary Outputs (max) incl. Life contact
Protection Functions87T/G/M/L,87 N,50/51,50/51N,50/51G,46,49,49,24,59,27,81,32R,32F,60FL,50 BF,38,86,74 TC,27,32,47,50
Case (x19'')1/2
Push Buttons4
LEDs (max)16
PSU VariantsDC 24-48; DC 60-250 /AC 115-230
Front User InterfaceYes
IEC 60870-5-103optional (additional price)
Profibus FMS/DP, Slaveoptional (additional price)
MODBUS RTU SLAVEoptional (additional price)
PROFINET I/Ooptional (additional price)
DNP3 serialoptional (additional price)
DIGSIDIGSI (additional price)
IEC 61850-8-1optional (additional price)
RTD-unit connectionoptional (additional price)
20 mA unit connectionoptional (additional price)
RSTP (Ethernet ring redundancy)optional (additional price)
PRP V1 (Parallel Redundancy Protocol)optional (additional price)
HSR (High available Seamless Ring configuration)optional (additional price)
Further Ethernet protocols on Ethernet modulesoptional (additional price)
Time SynchronisationYes
Functions Function overview:
  • Differential protection for 2- up to 3-winding transformers (3-/1-phase)
  • Differential protection for motors and generators
  • Differential protection for short 2 up to 3 terminal lines
  • Differential protection for busbars up to 9 feeders (phase-segregated or with summation CT)

Protection functions:
  • Differential protection with phase-segregated measurement
  • Sensitive measuring for low-fault currents
  • Fast tripping for high-fault currents
  • Restraint against inrush of transformer
  • Phase-/earth overcurrent protection
  • Overload protection with or without temperature measurement
  • Negative-sequence protection
  • Breaker failure protection
  • Low-or high-impedance restricted earth fault (REF)
  • Voltage protection functions

Control functions:
  • Commands for control of c.b. and isolators
  • Control via keyboard, binary inputs, DIGSI 4 or SCADA system
  • User-defined logic with CFC

Monitoring functions:
  • Self-supervision of the relay
  • Trip circuit supervision
  • Oscillographic fault recording
  • Permanent differential and restraint current measurement, extensive scope of operational values

Communication interfaces:
  • PC front port for setting with DIGSI 4
  • System interface IEC 61850 Ethernet - IEC 60870-5-103 protocol - PROFIBUS-FMS/-DP - MODBUS or DNP 3.0
  • Service interface for DIGSI 4 (modem)/ temperature monitoring (thermo-box)
  • Time synchronization via IRIG-B/DCF 77

Transformers are most critical and costly asset in substations. It requires best of the protection for its long life and reliable operation. SIEMENS Transformer Protection Relays takes best care of your transformers by providing best of the technology by virtue of their years long experience in transformer and protection technology.

Various products offered by Siemens for Transformer Protection are 7SR242, 7UT61/62/63/65.

These relays can be used to cater all possibilities for protecting your transformers. Also these relays can be used to protect Motors, Generators, short lines and Busbar.


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Siemens Siprotec 4 Siprotec 7SA64 Relay
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Siemens Siprotec 4 Siprotec 7SA64 Relay

Product Price : Get Latest Price
Product Brochure
Product Details:
Voltage220 V
Current4 Current Inputs (max)
Power SourceElectric
Frequency50/60 Hz
Display4 Small Display (lines)
Output Contact33 Binary Inputs (max) and 34 Binary Outputs (max) incl. Life contact
Housing Width1/3 x 19 inch to 2/1 x 19 Inch
Tripping3 Pole
Protection Functions21/21N,21FL ,50N/51N/67N ,50/51/67 ,50 ,68/68T,85/21 ,27WI,85/67N ,50HS,50BF,59/27 ,81O/U ,25,79 ,74
Analog measured value outputs (0-20 mA) (max)2
Case (x19'')1/3-1/1
Large, graphical Display (Pixel)240x120
Push Buttons4
LEDs (max)9/16
PSU VariantsDC 24-48; DC 60-125 DC 110-250 /AC 115-230
Front User InterfaceYes
IEC 60870-5-103optional (additional price)
Profibus FMS/DP, Slaveoptional (additional price)
DNP3 serialoptional (additional price)
DIGSIDIGSI (additional price)
IEC 61850-8-1optional (additional price)
RSTP (Ethernet ring redundancy)optional (additional price)
PRP V1 (Parallel Redundancy Protocol)optional (additional price)
HSR (High available Seamless Ring configuration)optional (additional price)
Further Ethernet protocols on Ethernet modulesoptional (additional price)
Time SynchronisationYes

The SIPROTEC 7SA64 distance protection relay is a universal relay for protection, control and automation with a graphic display on the basis of the SIPROTEC 4 system. Its high level of flexibility makes it suitable to be implemented at all voltage levels. With this relay you are ideally equipped for the future: it offers security of investment and also saves on operating costs. High-speed tripping time

  • Impedance setting range allows very small settings for the protection of very short lines
  • Self-setting detection for power swing frequencies up to 7 Hz
  • Current transformer saturation detector prevents non-selective tripping by distance protection in the event of CT saturation.
  • Phase-segregated teleprotection for improved selectivity and availability
  • Digital relay-to-relay communication by means of an integrated serial protection data interface
  • Adaptive auto-reclosure (ADT)

Protection Functions

  • Non-switched distance protection with 6 measuring systems (21/21N)
  • High resistance earth-fault protection for single and three-phase tripping (50N, 51N, 67N)
  • Earth-fault detection in isolated and resonant-earthed networks
  • Tele (pilot) protection (85)
  • Fault locator (FL)
  • Power-swing detection/tripping (68/68T)
  • Phase-overcurrent protection (50/51)
  • Switch-onto-fault protection (50HS)
  • STUB bus overcurrent protection (50STUB)
  • Overvoltage/undervoltage protection (59/27)
  • Over/underfrequency protection (81O/U)
  • Auto-reclosure (79)
  • Synchro-check (25)
  • Breaker failure protection (50BF)
  • Thermal overload protection (49)

Control Functions

  • Commands for control of c.b. and isolators

Monitoring Functions

  • Trip circuit supervision (74TC)
  • Self-supervision of the relay
  • Measured-value supervision
  • Event logging
  • Fault logging
  • Oscillographic fault recording
  • Switching statistics

Front design

  • Easy operation with numeric keys
  • Function keys
  • LEDs for local alarm
  • PC front port for convenient relay setting

Communication Interfaces

  • Front interface for connecting a PC
  • System interface for connecting to a control system via various protocols
  • IEC 60870-5-103 protocol
  • PROFIBUS-FMS/-DP
  • DNP 3.0
  • IEC 61850 Ethernet
  • 1 serial protection data interface for teleprotection
  • Rear-side service/modem interface
  • Time synchronization via - IRIG-B or DCF 77 or - System interface

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Siprotec 7SD61 Cable Differential Siemens Protection Relay
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Siprotec 7SD61 Cable Differential Siemens Protection Relay

Product Price : Get Latest Price
Product Brochure
Product Details:
Model Number7SD61
Frequency50/60 Hz
Rated Current1 or 5 A
Rated Voltage80 to 125 V
Current ConsumptionApprox. 1.8 mA
Permissible Tolerance-20 % to +20 %
Functions
Protection functions:
  • Differential protection for universal use with power lines and cables on all voltage levels with phase-segregated measurement (87L)
  • Two line ends capability
  • Suitable for transformers in protected zone (87T)
  • Restricted earth-fault protection (87N) if a transformer is within the protection zone
  • Well-suited for serial compensated lines
  • Two independent differential stages: one stage for sensitive measuring for high resistance faults and one stage for high current faults and fast fault clearance
  • Breaker-failure protection (50BF)
  • Phase and earth overcurrent protection with directional element (50, 50N, 51, 51N, 67, 67N)
  • Phase-selective intertripping (85)
  • Overload protection (49)
  • Over/undervoltage protection (59/27)
  • Over/underfrequency protection (81O/U)
  • Auto-reclosure single/three-pole (79)

Control functions:
  • Command inputs for control of CB and disconnectors (isolators)


Monitoring functions:
  • Self-supervision of the relay
  • Trip circuit supervision (74TC)
  • 8 oscillographic fault records
  • CT-secondary current supervision
  • Event logging / fault logging
  • Switching statistics

Front design:
  • User-friendly local operation
  • PC front port for convenient relay setting
  • Function keys and 8 LEDs for local alarm

Communication interfaces:
  • 1 serial protection data (R2R) interface

  • Front interface for PC connection

  • System interface
    - IEC 61850 Ethernet
    - IEC 60870-5-103 protocol
    - PROFIBUS-DP, DNP 3.0 and MODBUS

  • Service / modem interface (rear)

  • Time synchronization via IRIG-B, DCF77 or system interface


Features:
  • Browser-based commissioning tool
  • Direct connection to digital communication networks

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Siprotec 7sd52/53 Line Differential Protection Relay, Siemens Siprotec Relay
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Siprotec 7sd52/53 Line Differential Protection Relay, Siemens Siprotec Relay

Product Price : Get Latest Price
Product Details:
Model Number7SD52
Power SourceElectric
Frequency50/60 Hz
Rated Current1 or 5 A
Rated Voltage110 to 250 V DC
Permissible Tolerance-20 % to +20 %
Current ConsumptionApprox. 1.8 mA
Functions Protection Functions:
  • Differential protection with phase segregated measurement (87L, 87T)
  • Restricted ground-fault protection (87N) if a transformer is within the protection zone
  • Sensitive measuring stage for high-resistance faults
  • Non-switched distance protection with 6 measuring systems (21/21N)
  • High resistance ground (earth)-fault protection for single and three-pole tripping (50N/51N/67N)
  • Phase-selective intertripping (85)
  • Ground-fault detection in isolated and resonant-grounded networks
  • Tele (pilot) protection (85/21, 85/67N)
  • Weak-infeed protection (27WI)
  • Fault locator (FL)
  • Power swing detection/tripping (68/68T)
  • 3-stage overcurrent protection (50, 50N, 51, 51N)
  • STUB bus protection (50 STUB)
  • Switch-onto-fault protection (50HS)
  • Over/undervoltage protection (59/27)
  • Over/underfrequency protection (81O/U)
  • Auto-reclosure (79), Synchro-check (25)
  • Breaker failure protection (50BF)
  • Overload protection (49)
  • Lockout function (86)

Control functions:
  • Commands for control of circuit-breakers (isolators)


Monitoring functions:
  • Self-supervision of relay and protection data (R2R) communication
  • Trip circuit supervision (74TC)
  • Measured-value supervision
  • Oscillographic fault recording
  • Event logging/fault logging
  • Switching statistics

Front design:
  • User-friendly local operation
  • PC front port for relay setting
  • Function keys and 14 LEDs f. local alarm

Communication interfaces:
  • 2 serial protection data (R2R) interfaces for ring and chain topology

  • Front interface for connecting a PC

  • System interface for connection to a control system via various protocols
    – IEC 61850 Ethernet
    – IEC 60870-5-103
    – PROFIBUS-FMS/-DP and DNP 3.0

  • Rear-side service/modem interface

  • Time synchronization via IRIG-B or DCF77 or system interface


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7xt71 Controller Unit For Rotor Ground Fault Protection
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7xt71 Controller Unit For Rotor Ground Fault Protection

Product Price : Get Latest Price
Product Details:
PhaseSingle Phase
Frequency50/60 Hz
Voltage220 V/380 V
Power SourceElectric
Current1 to 5 A
Model Number7XT71
7XT71 controller unit used conjointly with the 7XR6004 for the 1-3 Hz rotor ground fault protection in the SIPROTEC 7UM62. A low-frequency square wave voltage of approx. +/- 50 V is injected into the rotor circuit. An AC voltage or a DC voltage can be used as supply voltage.

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7SJ64 BCPU Protection Relay With Synchronization
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7SJ64 BCPU Protection Relay With Synchronization

Product Price : Get Latest Price
Product Details:
Model Number7SJ64
PhaseSingle Phase
Power SourceElectric
Frequency50/60 Hz
Rated Current1 or 5 A
Rated Voltage100 V to 225 V
FunctionsProtection functions:
  • Overcurrent protection
  • Directional overcurrent protection
  • Sensitive dir./non-dir. earth-fault detection
  • Displacement voltage
  • Intermittent earth-fault protection
  • Directional intermittent ground fault protection
  • High-impedance restricted earth fault
  • Inrush restraint
  • Motor protection
  • Overload protection
  • Temperature monitoring
  • Under-/overvoltage protection
  • Under-/overfrequency protection
  • Rate-of-frequency-change protection
  • Power protection (e.g. reverse, factor)
  • Undervoltage-controlled reactive power protection
  • Breaker failure protection
  • Negative-sequence protection
  • Phase-sequence monitoring
  • Synchronization
  • Auto-reclosure
  • Fault locator
  • Lockout

Control functions/programmable logic:
  • Flexible number of switching devices
  • Position of switching elements is shown on the graphic display
  • Local/remote switching via keyoperated switch
  • Control via keyboard, binary inputs, DIGSI 4 or SCADA system
  • Extended User-defined logic with CFC (e.g. interlocking)

Monitoring functions:
  • Operational measured values V, I, f,...
  • Energy metering values Wp,Wq
  • Circuit-breaker wear monitoring
  • Slave pointer
  • Trip circuit supervision
  • Fuse failure monitor
  • 8 oscillographic fault records
  • Motor Statistics

Communication interfaces:
  • System interface
    – IEC 60870-5-103/ IEC 61850
    – PROFIBUS-FMS/-DP
    – DNP 3.0/DNP3 TCP/MODBUS RTU

  • Service interface for DIGSI 4 (modem)
  • Additional interface for temperature detection (RTD-box)
  • Front interface for DIGSI 4
  • Time synchronization via IRIG B/DCF77

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Siemens Siprotec 4 Bay Controller SIPROTEC 6MD66
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Siemens Siprotec 4 Bay Controller SIPROTEC 6MD66

Product Price : Get Latest Price
Product Brochure
Product Details:
Frequency50/60 Hz
Current3 Current Inputs (max)
Model Number6MD66
Display240x120 Large,graphical Display (Pixel)
Output Contact65 Binary Inputs (max) and 45 Binary Outputs (max) incl. Life contact
Rated Current1 or 5 A
Rated Auxiliary Voltages24 to 48 V DC,60 to 125 V DC,110 to 250 V DC
Permitted Tolerance-20 % to +20 %
Protection Functions25,50BF,79
Transducer inputs (0-20 mA) (max)2
Case (x19'')1/1
Push Buttons4
LEDs (max)16
PSU VariantsDC 24-48; DC 60-250 /AC 115-230
Front User InterfaceYes
IEC 60870-5-103optional (additional price)
IEC 60870-5-104optional (additional price)
MODBUS TCPoptional (additional price)
DNP3 serialoptional (additional price)
DNP 3 TCPoptional (additional price)
DIGSIoptional (additional price)
IEC 61850-8-1optional (additional price)
IEC 61850-9-2optional (additional price)
RTD-unit connectionoptional (additional price)
20 mA unit connectionoptional (additional price)
RSTP (Ethernet ring redundancy)optional (additional price)
PRP V1 (Parallel Redundancy Protocol)optional (additional price)
HSR (High available Seamless Ring configuration)optional (additional price)
Further Ethernet protocols on Ethernet modulesoptional (additional price)
Time SynchronisationYes
The 6MD66 high-voltage bay control unit is the control unit for high voltage bays from the SIPROTEC 4 relay series. Because of its integrated functions, it is an optimum, low-cost solution for high-voltage switchbays. The 6MD66 high-voltage bay controller unit also has the same design (look and feel) as the other protection and combined units of the SIPROTEC 4 relay series. Configuration is performed in a standardized way with the easy-to-use DIGSI 4 configuration tool.


For operation, a large graphic display with a keyboard is available. The important operating actions are performed in a simple and intuitive way, e.g. alarm list display or switchgear control. The operator panel can be mounted separately from the unit, if required. Thus, flexibility with regard to the mounting position of the unit is ensured. Integrated key-operated switches control the switching authority and authorization for switching without interlocking. High-accuracy measurement (± 0.5 %) for voltage, current and calculated values P and Q are another feature of the unit.

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Siemens Siprotec 4 Siprotec 7SS52 Distributed Bus Bar Differential Protection Relay
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Siemens Siprotec 4 Siprotec 7SS52 Distributed Bus Bar Differential Protection Relay

Product Price : Get Latest Price
Product Brochure
Product Details:
Current192 Current Inputs (max)
Model Number7SS52
Power SourceElectric
Frequency50/60 Hz
Display4 Small Display (lines)
Output Contact970 Binary Inputs (max) and 370 Binary Outputs (max) incl. Life contact
Rated Current1 or 5A
Voltage Range220,250 V DC
Protection Functions50/50N,50EF,50BF,51/51N,87
Case (x19'')1/3-1/1
Push Buttons196
PSU VariantsDC 24-48; DC 60-250 /AC 115-230
Front User InterfaceYes
IEC 60870-5-103optional (additional price)
DNP3 serialoptional (additional price)
DNP 3 TCPoptional (additional price)
DIGSIoptional (additional price)
IEC 61850-8-1optional (additional price)
RSTP (Ethernet ring redundancy)optional (additional price)
PRP V1 (Parallel Redundancy Protocol)optional (additional price)
HSR (High available Seamless Ring configuration)optional (additional price)
Further Ethernet protocols on Ethernet modulesoptional (additional price)
Time SynchronisationYes
Functions Busbar protection functions:
  • Busbar differential protection
  • Selective zone tripping
  • Very short tripping time (<15 ms)
  • Extreme stability against external fault, short saturation-free time (2 ms)
  • Phase-segregated measuring systems
  • Integrated check zone
  • 48 bays can be configured
  • 12 busbar sections can be protected
  • Bay-selective intertripping

Breaker failure protection functions:
  • Breaker failure protection (single-phase with/without current)
  • 5 operation modes, selectable per bay
  • Separate parameterization possible for busbar and line faults
  • Independently settable delay times for all operation modes
  • 2-stage operation bay trip repeat/trip busbar
  • Intertrip facility (via teleprotection interface)
  • Low-current mode using the circuitbreaker auxiliary contacts

Additional protection functions:
  • End-fault protection with intertrip or bus zone trip
  • Backup overcurrent protection per bay unit (definite-time or inverse-time)
  • Independent breaker failure protection per bay unit

Features:
  • Distributed or centralized installation
  • Easy expansion capability
  • Integrated commissioning aids
  • Centralized user-friendly configuration/parameterization with DIGSI
  • Universal hardware

Communication interfaces:
  • FO interface
     IEC 60870-5-103 protocol

  • Electrical interface
     IEC 61850 protocol with EN 100 module (firmware V4.6


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Siemens Siprotec Protection Relay
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Siemens Siprotec Protection Relay

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Product Details:
Voltage220 to 250 V DC, 115 to 230 V AC
Current1 to 5 A
Power SourceElectric
Frequency50/60 Hz
Body MaterialMS
7xt34 20 Hz Band Pass For 100 % Stator Ground Fault Protecti

Device with a 20 Hz band pass. It smoothes the square wave voltage of the 20 Hz generator (7XT33) and protects it against ground faults with maximum displacement voltage. At 20 Hz the series resistor is 8 and at rated frequency (50/60 Hz) it is more than 100 . Moreover, the device features a voltage divider for reducing the measured displacement voltage (division ratio 5:2 or 5:1) at a grounding transformer or neutral-point transformer. The external divider 3PP1336-1CZ is not applicable

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7xr61 Coupling Unit For Rotor Ground Fault Protection
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7xr61 Coupling Unit For Rotor Ground Fault Protection

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Product Details:
BrandSiemens
Model Number7XR61
Power SourceElectric
Frequency50/60 Hz
Body MaterialMS
Coupling unit for the rotor ground fault protection with 50 Hz/60 Hz injection in the SIPROTEC 7UM6. A 3PP1336-0DZ is required additionally.

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Siemens Siprotec 4 Siprotec 7SJ62 Multifunction Over Current Protection Relay
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Siemens Siprotec 4 Siprotec 7SJ62 Multifunction Over Current Protection Relay

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Product Brochure
Product Details:
Model Number7SJ62
PhaseSingle Phase
Power SourceElectric
Frequency50/60 Hz
Rated Current1 or 5 A
Rated Voltage220/250 V DC
Functions Protection functions:
  • Overcurrent protection (definite-time/inverse-time/user-def.)
  • Directional overcurrent protection (definite-time/inverse-time/user-def.)
  • Sensitive dir. earth-fault detection
  • Displacement voltage
  • Intermittent earth-fault protection
  • Directional intermittent ground fault protection
  • High-impedance restricted earth fault
  • Inrush restraint
  • Motor protection
  • Overload protection
  • Temperature monitoring
  • Under-/overvoltage protection
  • Under-/overfrequency protection
  • Rate-of-frequency-change protection
  • Power protection (e.g. reverse, factor)
  • Undervoltage controlled reactive power protection
  • Breaker failure protection
  • Negative-sequence protection
  • Phase-sequence monitoring
  • Synchro-check
  • Auto-reclosure
  • Fault locator
  • Lockout

Control functions/programmable logic:
  • Commands for control of a circuit-breaker and of isolators
  • Position of switching elements is shown on the graphic display
  • Control via keyboard, binary inputs, DIGSI 4 or SCADA system
  • User-defined logic with CFC (e.g. interlocking)

Monitoring functions:
  • Operational measured values V,l,f
  • Energy metering values Wp,Wq
  • Circuit-breaker wear monitoring
  • Slave pointer
  • Trip circuit supervision
  • Fuse failure monitor
  • 8 oscillographic fault records
  • Motor Statistics

Communication interfaces:
  • System interface
    – IEC 60870-5-103/ IEC 61850
    – PROFIBUS-FMS/-DP
    – DNP 3.0/MODBUS RTU

  • Service interface for DIGSI 4 (modem)
  • Front interface for DIGSI 4
  • Time synchronization via IRIG B/DCF77

Hardware:
  • 4 current transformers
  • 3/4 voltage transformers
  • 8/11 binary inputs
  • 8/6 output relays

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3pp1326 Voltage Divider For Underexcitation Protection
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3pp1326 Voltage Divider For Underexcitation Protection

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Product Details:
Power SourceElectric
Frequency50/60 Hz
Voltage220 V/240 V
Current1 to 5 A
Model Number3PP1326
Device with wire-wound resistors as voltage dividers (division ratio 10:1 or 20:1) to inject the excitation voltage into the underexcitation protection in the SIPROTEC 7UM62.

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Resistor Unit For Rotor Ground Fault Protection
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Resistor Unit For Rotor Ground Fault Protection

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Product Details:
Voltage220 V/240 V
Frequency50/60 Hz
Power SourceElectric
Body MaterialMS
Model Number7XR6004
Resistor unit with 4 x 20 k resistors to connect the 1-3 Hz rotor ground fault protection in the SIPROTEC 7UM62.

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