Digital And Smart Grid Enterprises
Navi Mumbai, Maharashtra
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SEL Numerical Relays

We are a leading Manufacturer of sel-311l line current differential protection and automation, 2664s stator ground protection relay, 352 breaker failure relay, 547 distributed generator interconnection relay, sel-749m motor relay and sel-849 motor management relay from Navi Mumbai, India.
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SEL-311L Line Current Differential Protection And Automation
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SEL-311L Line Current Differential Protection And Automation

Approx. Price: Rs 14,500 / PieceGet Latest Price
Product Details:
Voltage125/250 VDC
Current1 A / 5 A
Frequency50/60 Hz
Weight6.9 kilograms (15.2 pounds)
Power Consumption25 Watts
Operating Temperature-40 deg to +85 deg C (-40 deg to +185 deg F)

Use the SEL-311L Line Current Differential Relay with integral four-zone distance backup for easy-to-apply, high-speed line protection.

 

Apply subcycle current differential protection with included four-zone distance and directional overcurrent backup. Use single or dual differential channels for reliability. Apply the SEL-311L on two- or three-terminal lines. Unique measuring elements provide coordination with tapped loads. Reduce total project construction and operation costs through integration of the included four-shot recloser and relay logic operators into your automation system.

 

Improve protection system reliability with continuous checks of communications quality, breaker wear, battery voltage, and relay health. Use the included LCD display in place of traditional panel meters.


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2664S Stator Ground Protection Relay
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2664S Stator Ground Protection Relay

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Product Details:
Voltage110-240 Vac
Power SourceElectric
Frequency50/60 Hz
Nominal Injected Current Amplitude0.5-5.0 A rms
Continuous Thermal Rating5 A rms
Power Consumption120 VA (ac)
Protect high-impedance grounded generators from ground faults at standstill, during startup, and while running by using the multisine frequency injection and neutral overvoltage-based protection in the SEL-2664S Stator Ground Protection Relay.

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352 Breaker Failure Relay
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352 Breaker Failure Relay

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Product Details:
Voltage220/240 V
Current5 A nominal
PhaseThree Phase
Power SourceElectric
Frequency60 /50 Hz
Operating Temperature-40 deg to +85 deg C (-40 deg to +185 deg F)
Breaker Failure Relay

The SEL-352 Breaker Failure Relay provides breaker failure protection, breaker control, and breaker monitoring. Features include a cost-saving data recorder and a sophisticated breaker monitor and controller to reduce maintenance and supervise manual operations. SELogic control equations provide flexibility in applying the SEL-352 Relay for a variety of applications.


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547 Distributed Generator Interconnection Relay
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547 Distributed Generator Interconnection Relay

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Product Details:
Frequency50/60 Hz
AC Voltage Inputs208-0480 V
AC Current Input5 A nominal
Power Supply6-32 Vdc Input Range
Power Consumption10 W
Operating Temperature-40 deg to +85 deg C (-40 deg to +185 deg F)
Distributed Generator Interconnection Relay

Apply the flexible SEL-547 at the transfer switch site (interconnection point between the utility and the customer) and at each individual generator site. When the SEL-547 at the transfer switch site detects utility supply problems, it separates the customer system from the utility supply. When the SEL-547 at an individual generator site detects a system problem that could adversely affect the generator, it separates the individual generator from the rest of the system. The SEL-547 product flyer figures show examples of the SEL-547 "in action" at the transfer switch site and at an individual generator site. Other applications and scenarios are possible.


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SEL-749M Motor Relay
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SEL-749M Motor Relay

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Product Details:
Frequency50/60 Hz
Voltage TypeDC
Voltage220, or 250 Vdc/Vac
Current1 A Phase or 5 A Phase
PhaseSingle Phase
Power SourceElectric
Get comprehensive motor protection and SEL-exclusive reporting and trending that save you money in your industrial motor plant and processes. The SEL-749M Motor Relay uses the latest enhancements in the SEL-patented thermal overload model to accurately track the heating effects of operating and cyclic overload currents. The relay offers all basic motor protection features, including short-circuit, load loss, load jam, and frequent-starting protection as well as imbalance current and phase reversal protection. Add optional voltage, I/O, and communications capabilities to build the SEL-749M that is just right for your application.

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SEL-849 Motor Management Relay
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SEL-849 Motor Management Relay

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Product Details:
Frequency50/60 Hz
Voltage TypeDC
Voltage110/240 Vac
Weight1.0 kg (2.2 lb)
Dimensions71.1 mm (2.8 in.) x 127.0 mm (5 in.) x 152.4 mm (6 in.)
Operating Temperature-40 deg to +85 deg C (-40 deg to +185 deg F)

The SEL-849 Relay offers current-, voltage-, and thermal-based motor protection; arc-flash detection; and power metering. It also provides all basic motor protection features, including protection for the following conditions:

  • Short circuit
  • Load loss
  • Load jam
  • Frequent starting
  • Imbalanced current
  • Phase reversal

The SEL-849 installs easily inside a motor control center (MCC). The optional SEL-3421 and SEL-3422 Motor Relay HMIs (human-machine interfaces) install on the front of the MCC.


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SEL-2600 RTD Module
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SEL-2600 RTD Module

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Product Details:
Accuracy+-2 deg C
Model NumberSEL-2600
Operating Temperature-40 deg to +85 deg C (-40 deg to +185 deg F)
Pollution DegreePD3
Rated Supply Voltage125 Vdc (+-10%)
Input Voltage Range112.5-137.5 Vdc
Power Consumption5 W (2.5 W typical)
RTD Inputs Range-50 deg to +250 deg C
Measure and transmit data from up to 12 resistance temperature detectors (RTDs) and a single contact status located in transformers, breakers, motors, generators, or other system apparatus.

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SEL-T400L Time-Domain Line Protection
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SEL-T400L Time-Domain Line Protection

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Product Details:
Model NumberSEL-T400L
AC Current Inputs1A to 5A
Operational Frequency Range30-120 Hz
Rated Voltage125-250 Vdc
Operating Temperature-40 deg to +85 deg C (-40 deg to +185 deg F)
Humidity5% to 95% Without Condensation
Weight6.01 kg (13.25 lb)
Apply the SEL-T400L Time-Domain Line Protection for ultra-high-speed and secure protection of critical lines. With breakthrough time-domain technologies, the SEL-T400L securely trips in as fast as 1 millisecond, records events with sampling up to 1 MHz, and detects faults accurately to the nearest tower with single- and double-ended traveling wave fault locators. The SEL-T400L complements your traditional protection and gives you speed.

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SEL-451 Protection, Automation, and Bay Control System
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SEL-451 Protection, Automation, and Bay Control System

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Product Details:
ModelSEL-451
AC Analog Inputs8 kHz
Operating Temperature-40 deg to +85 deg C (-40 deg to +185 deg F)
Humidity5% to 95% without condensation
Weight8.0 kg (17.7 lb)
Rated Voltage24-48 Vdc
The SEL-451 Protection, Automation, and Bay Control System is a complete standalone system. The SEL-451 has the speed, power, and flexibility to combine complete substation bay control with high-speed breaker protection in one economical system. Use the SEL-451 as an integral part of a full substation protection, control, and monitoring solution. Reduce maintenance costs by accurately tracking the breaker operation. Monitor breaker interruption times and the accumulated breaker duty to easily determine the need for proactive maintenance. Integrate information with SCADA or automation systems through a communications processor or directly to the Ethernet port.

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SEL-551C Overcurrent/Reclosing Relay
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SEL-551C Overcurrent/Reclosing Relay

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Product Details:
Model NumberSEL-551C
Frequency50/60 Hz
Weight2.5 kg (5 lbs, 8 oz.)
Power Supply125/250 Vdc
Operating Temperature-40 deg to +85 deg C (-40 deg to +185 deg F)
Humidity0% to 95% without condensation
AC Current Inputs2500 Vac for 10 s
The SEL-551C Overcurrent/Reclosing Relay provides overcurrent relay users with new flexibility in distribution system protection. The SEL-551C provides six inputs and three outputs, with up to two communications ports, for more control options. The SELogic control equations have added rising and falling edge triggers and latches for custom logic applications.

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SEL 501 Dual Universal Over Current Relay
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SEL 501 Dual Universal Over Current Relay

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Product Details:
Voltage220V
Current1-5A
Model Number501
MaterialMild Steel
Display TypeDigital
PhaseSingle
Power SourceElectric
In order to keep pace with the never-ending demands of customers, we are involved in offering a wide range of SEL 501 Dual Universal Over Current Relay

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2414 Transformer Monitor
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2414 Transformer Monitor

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Product Details:
Weight2.0 kg (4.4 lb)
System Frequency50/60 Hz
Operating Temperature Range-40 deg to +75 deg C (-40 deg to +167 deg F)
Voltage220 V/240 V
Power SourceElectric
Transformer Monitor:

The SEL-2414 Transformer Monitor withstands harsh physical and electrical environments and is built and tested to meet mission-critical IEEE and IEC protective relay standards. Apply the SEL-2414 to satisfy standalone or distributed monitoring and control of transformers, or choose from the flexible communications options to connect to a substation distributed SCADA or automation system, or a SCADA master. Choose I/O options that fit your unique needs, from detecting oil levels and sudden pressure to alerting alarm systems or control functions. As always, the SEL-2414 is protected by SEL's no-questions-asked, worldwide, ten-year product warranty.


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300G Generator Relay
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300G Generator Relay

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Product Details:
Power SourceElectric
Frequency50/60 Hz
Power Supply125/250 Vdc or Vac
AC Current Inputs5 A Nominal
Operating Temperature-40 deg to +85 deg C (-40 deg to +185 deg F)
SEL-300GGenerator Relay

Provide proven primary and backup protection for utility and industrial generators to IEEE turbine protection standards.


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387A Current Differential and Overcurrent Relay
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387A Current Differential and Overcurrent Relay

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Product Details:
Current (Amp)1A to 5A
Frequency60/50 Hz
Standard Control Input and Output Ranges24, 48, 110, 125 or 250 Vdc
Operating Temperature-40 deg to +85 deg C (-40 deg to +185 deg F)
Power Supply3100 Vdc for 10 Seconds
Current Differential and Overcurrent Relay

The SEL-387A Current Differential and Overcurrent Relay offers restrained and unrestrained differential protection for two terminals. Second-, fourth-, and fifth-harmonic elements, augmented by the dc element, provide security during transformer energization and overexcitation conditions in a user-defined choice of either harmonic restraint or harmonic blocking. Overcurrent elements provide backup protection that contributes to the versatility of the SEL-387A.


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587 Current Differential Relay
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587 Current Differential Relay

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Product Details:
Power Supply125/250 Vdc or Vac
Frequency50/60 Hz
Operating Temperature-40 deg to +85 deg C (-40 deg to +185 deg F)
Weight2.6 kg (5 lb, 12 oz)
AC Current Inputs5 A nominal
Current Differential Relay

The SEL-587 Current Differential/Overcurrent Relay provides protection for any two-input apparatus, such as transformers, motors, generators, and reactors. Apply it for differential and overcurrent protection and use event reports for quick post-event analysis.


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700G Generator Protection Relay
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700G Generator Protection Relay

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Product Details:
PhaseSingle Phase
Power SourceElectric
Frequency50/60 Hz
Power Supply24-48 Vdc, 110-250 Vdc, or 110-240 Vac.
Body MaterialMS

The SEL-700G Relay is the right solution for utility and industrial generator protection, with an autosynchronizer, flexible I/O, and advanced communications. Apply the SEL-700G Relay for comprehensive primary and backup generator protection.

The SEL-700G provides a complete protection and synchronization solution for synchronous generators. Eliminate the complexity and cost of standalone synchronizer packages. Integrating the synchronization capability into the generator protection relay provides the most cost-effective and reliable solution. Easily upgrade protection without cutting or drilling existing cutouts with a small form factor and multiple mounting adapters. Quickly integrate into serial- or Ethernet-based communications with Modbus, DNP3, IEC 61850, Mirrored Bits communications, and other protocols.


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SEL-701 Motor Protection Relay
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SEL-701 Motor Protection Relay

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Product Details:
Voltage TypeDC
Voltage250 V
Number of Poles4 Pole
Current5 A
Power SourceElectric
The SEL-701 Motor Protection Relay provides complete induction motor protection combined with innovative monitoring, reporting, metering, and control capabilities.

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SEL-710 Motor Protection Relay
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SEL-710 Motor Protection Relay

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Product Details:
Frequency50/60 Hz
Voltage TypeDC
Voltage220 V
Number of Poles4 Pole
Current1 A

The SEL-710 Motor Protection Relay features the industry’s most accurate motor protection together with settings, mounting, and communications options designed for easy application. The SEL-710 with the Accu Track Thermal Model determines the longest safe starting time (no speed switch needed) and reduces the wait time between motor starts up to 33 percent. Choose from eight communications protocols, including Ethernet, Modbus, IEC 61850, and Device Net for fast integration into control systems.


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SEL-311C Transmission Protection System
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SEL-311C Transmission Protection System

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Product Details:
Voltage125/250 Vdc
Current (Amp)5 A
Frequency50/60 Hz
Weight13 lb (5.92 kg)
Operating Temperature-40 deg to +85 deg C (-40 deg to +185 deg F)

Apply the SEL-311C Relay for protection, reclosing, monitoring, and control of transmission lines.

Features include a four-shot recloser, patented capacitance voltage transformer (CVT) transient overreach logic to enhance security of Zone 1 distance elements, and over current elements with directional control, monitoring, and metering. Apply three-pole tripping logic, or select the SEL-311C-3 for single-pole tripping. The SEL-311C comes standard with EIA-232 serial ports as well as a 10/100 BASE-T Ethernet port for local/remote access and system integration. IEEE C37.118 compliant synchrophasors are included for improved situational awareness.


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SEL-321-5 Phase & Ground Distance Relay
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SEL-321-5 Phase & Ground Distance Relay

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Product Details:
Voltage48/125 Vdc or 125 Vac
Current1 A to 5 A
PhaseSingle Phase
Power SourceElectric
Frequency50 Hz
The SEL-321-5 Relay is designed especially for EHV and HV applications on 50 Hz systems. The relay provides enhanced single-pole tripping, phase and ground distance, directional overcurrent, negative-sequence overcurrent, and fault locating. The SEL-321-5 Relay contains all the protective elements and control logic necessary to protect, monitor, and control overhead lines.

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SEL-411L Advanced Line Differential Protection, Automation Relays
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SEL-411L Advanced Line Differential Protection, Automation Relays

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Product Details:
Model NoSEL-411L
Current1 A to 5 A
AC Voltage Inputs300 V
Power Supply125/250 Vdc or 120/240 Vac, 48/125 Vdc or 110/120 Vac
Operating Temperature-40 deg to +85 deg C (-40 deg to +185 deg F)
Apply the SEL-411L Relay for complete protection and control of any transmission line. The SEL-411L provides differential protection with both phase- and sequence-based operating elements for sensitivity and high-speed operation. Choose from many popular fiber and multiplexed communications options. Distance protection and logic from a complete SEL-421 Protection, Automation, and Control System are included to provide backup protection and integration. Any transmission line (short, long, or series-compensated) can be well protected with the SEL-411L Relay.

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SEL-351 Protection System
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SEL-351 Protection System

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Product Details:
Model NumberSEL-351
AC Current InputsIA, IB, and IC 5 A or 1 A nominal, IN 5 A, 1 A, 0.2 A, or 0.05 A nominal
AC Voltage Inputs300 V maximum
Frequency and Phase Rotation60/50 Hz system frequency ABC or ACB phase rotation
Operating Temperature-40 deg to +85 deg C (-40 deg to +185 deg F)
The SEL-351 Protection System has built-in Ethernet and IEEE C37.118 synchrophasors, and is ideal for directional overcurrent applications. Optional Mirrored Bits communications and power quality monitoring add flexibility to solutions. The SEL-351 is the protection standard for utility and industrial electrical systems around the world.

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Sel 421 Automation  Control System
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Sel 421 Automation Control System

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Product Details:
Automation GradeAutomatic
PhaseSingle
Voltage (V)220-240V
Model NumberSel 421
We have carved a niche amongst the most trusted names in this business, engaged in offering a comprehensive range of Sel 421 Automation Control System.

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387E Current Differential and Voltage Relay
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387E Current Differential and Voltage Relay

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The SEL-387E Current Differential and Voltage Relay provides protection to two- or three-winding power transformers. Voltage inputs for power metering, overexcitation protection, and over-/underfrequency load shedding provide versatile solutions for power apparatus protection. Automation features reduce total project construction and operation costs through elimination of traditional external control switches, meters, and indicating lamps.

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487V Capacitor Protection and Control System
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487V Capacitor Protection and Control System

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Simplify relay setting and application while reducing inventory by using one relay for all of your capacitor bank needs. The versatile SEL-487V Capacitor Bank Protection and Control System can handle grounded and ungrounded, single- and double-wye capacitor bank applications. It provides sensitive voltage differential and current unbalance protection with compensation adjustment for small voltage differential levels due to variations in individual capacitor elements from manufacturing, PT, or instrument transformer measurement errors. Application-based settings simplify setup and installation while fault-finding logic locates faulty capacitor units to speed up necessary maintenance. Synchrophasor technology provides situational awareness and real-time control.

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787 Transformer Protection Relay
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787 Transformer Protection Relay

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Protect and monitor most industrial transformer applications with the versatile SEL-787 Transformer Protection Relay. Apply 2 three-phase winding inputs, an optional single-phase restricted earth fault (REF) input, and three-phase voltage inputs for comprehensive transformer protection. Benefits include advanced automation and flexibility; single or dual, copper or fiber Ethernet communications ports; asset management data; and easy retrofit of most electromechanical relays.

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4520 Arc-Flash Test Module
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4520 Arc-Flash Test Module

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The SEL-4520 Arc-Flash Test Module provides a convenient way to test the operation of arc-flash detection relays installed in metal-clad and metal-enclosed switchgear. The SEL-4520 is used to test the SEL-751 and SEL-751A Feeder Protection Relays and other arc-flash detection relays that use light and overcurrent to sense an arc-flash event.

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