ABB Auxiliary Relays

ABB CV2A2J Auxiliary Relay – Two Element Auxiliary Relay, Self-Reset Contacts with Operation Indicator

• Type: Electro Mechanical Relay.
• Protection Type: Auxiliary Relay.

Electromechanical and solid state relays

For new applications where reliable operation is essential, in harsh environments, or in existing installations where an exact replacement is required

ABB electromechanical relays have protected the power system for more than 100 years, and with the proper inspection, maintenance, and testing techniques, these relays can guard the power system for many more years.

Solid state electronic components provide a similar function to electromechanical relays but do not have any moving components, increasing long-term reliability.

CV2 PRODUCT RANGE:

The indicating relay type CV2 is an instantaneous hinged-armature relay with two contacts. These may be either two normally open contacts, or one normally open and one normally closed. The indicator can be reset simply by pressing the knob back in. Some of the other Aux relays are CV2A2J, CV2AJ, CV2D2J, and CV2DJ, P8nAHX, P8nCH2J, RXP8n

ABB CV2D2J Auxiliary Relay – Two Element Auxiliary Relay, Self-Reset Contacts with Operation Indicator

• Type: Electro Mechanical Relay.
• Protection Type: Auxiliary Relay.

CV2 PRODUCT RANGE:

The indicating relay type CV2 is an instantaneous hinged-armature relay with two contacts. These may be either two normally open contacts, or one normally open and one normally closed. The indicator can be reset simply by pressing the knob back in. Some of the other Aux relays are CV2A2J, CV2AJ, CV2D2J, and CV2DJ, P8nAHX, P8nCH2J, RXP8n

ABB IRXm Static Protection relay, the circulating current relay IRXm is mainly used for high-speed restricted earth fault protection of generators and transformer windings. For the selective detection of faults, current transformers in summation connection are employed with an external stabilizing resistor for high impedance method of measurement. The relay is provided with a band-pass filter which suppresses harmonics and DC components of the input current. The relay is suitable for current transformers with secondary rating of both 1A and 5A.

IRXm product range

• Wide auxiliary voltage range as 24V/30V/ 48V/ 110-125V/ 220-250V DC
• Fixed contact configuration 2NO+1NC

Key benefits

• Easy installation and maintenance
• Fast operation
• Visual indication

Key features

• Draw-out type
• Wide current setting range
• Sensitive high-speed protection on internal faults
• Operation largely immune to DC components and harmonics

ABB Static Protection Relay – Circulating Current Relay

Technical Specification

• Type: Electro Mechanical Relay.
• Protection Type: Static Protection Relay.

ABB P8NCH2J Auxiliary Relay – Single element auxiliary relay, self-reset contacts with operation indicator

Key benefits

• Highly Reliable
• Compact and Robust
• Visual Indication

Key features

• Double interruption contacts
• Wide range of contact and voltage configurations
• Hand reset operation

• Type: Electro Mechanical Relay.
• Protection Type: Auxiliary Relay.

The auxiliary relays P8n and PN8n are instantaneous, auxiliary plunger type relay with 7 double interruption contacts. They are used in installations where high degree of reliability and high contact rating are stipulated with minimal internal consumption. They act as instantaneous switching element, providing galvanic separation and contact multiplication in tripping and signaling circuits of protective relays.

The P8n relay is designed for high speed operation. It has an operation indicator which pops out when the contact system picks up and relay latches. The operation indication can be reset manually. Other variant without operation indication can also be selected based on order code.

The PN8n relay is specially designed for minimum drop out of approximately 20% of rated voltage. The relay is available with operation indication which pops out when the contact system drops off. The operation indication can be reset manually.

ABB PQ5nCH2J High Speed Tripping Relay –High Speed Tripping Relay, Hand Reset Contacts With Operation Indicator

• Type: Electro Mechanical Relay.
• Protection Type: High Speed Tripping Relay.

High speed tripping relays for high as well as low burden applications

The PQ_ series relays are intended for the master trip applications in utility substations and industrial power systems, where a high degree of reliability and a high contact rating are stipulated with minimum internal consumption. Acting as instantaneous switching element, it provides galvanic separation and contact multiplication in tripping circuits of protective applications.

The relays are available in both low impedance as well as high impedance variants. The low burden type relay are generally used when initiating contact and master trip relay is in same cubicle. The high burden type relay is intended for applications where initiating contacts are coming from remote. The high burden provides immunity to capacitance discharge currents, which can result at the inception of an earth fault on battery wiring and immunity to subsequent leakage current.

PQ_ series product range

• PQ8nCH2JMaster trip relay with 7 contacts, low burden
• PQ5nCH2JMaster trip relay with 4 contacts, low burden
• PQ8nC2JWMaster trip relay with 6 contacts, high burden

Key benefits

• Compact and robust
• Highly reliable
• Visual indication

Key features

• High speed operation
• Wide range of voltage and contact configuration
• Double interruption contacts
• Suitable for both AC and DC auxiliary voltage for low burden models
• Hand reset contact and trip indication

Design and Principle:
The relay type PQ…. is specially designed for high speed operation and mechanical latching. It has flag indicator which indicates trip status when the relay latches. The relay can be hand reset by pressing in and resetting the operation indicator. The trip relays type PQ.. are instantaneous, plunger type relay with 4/6/7 contacts with double interruption. They are designed to operate from d.c. The low burden relays can also operate from a.c. when preceded by rectifier.

The relay has a magnet system which comprises a fixed core and a moving, plunger-type armature, actuating the
contact bar directly. When the coil is deenergized, the armature of the magnet and the contact bar are forced back into their initial position by spring action when relay is resetted.
The contacts are arranged symmetrically in two rows, on either side of the magnet, clearly visible and readily accessible.
The high burden relays have 2 cutoff contacts in series with coil, which ensures momentory high burden during pick up which is cut off after relay operation. The terminals on 1/2’S’ flush mounting case have an opening which can accommodate two wires with a crosssection of 1.5mm².

ABB PQ8nCH2J High Speed Tripping Relay – High Speed Tripping Relay, Hand Reset Contacts with Operation indicator

• Type: Electro Mechanical Relay.
• Protection Type: High Speed Tripping Relay.

Features:

* High speed operation

* Contact configuration can be changed with ease
* High and Low burden alternatives

* Wide range of voltage & contact configurations
* High degree of reliability, even when it has been idle for a long time
* Low burden models suitable for ac and dc operation
* 4/6/7 contacts with double interruption

* Hand reset contact and trip indication

Application:

The tripping relays type PQ…. are used for all kinds of control and protection circuits in power stations and industrial
installations, where a high degree of reliability and a high contact rating are stipulated, with minimal internal consumption.
Acting as instantaneous switching element, relay provides galvanic separation and contact multiplication in tripping circuits of protective applications. Low burden tripping relays PQ8nCH2J and PQ5nCH2J are suitable for HV, MV and LV installations where immunity to capacitance discharge and high minimum operation currents are not required. High burden tripping relays PQ8nC2JW are suitable for applications where initiating contacts are coming from remote.
The high burden provides immunity to capacitance discharge currents, which can result at the inception of an earth fault on battery wiring and immunity to the subsequent leakage current. Both low as well high burden relays are
suitable for relay coil supervision through either LED lamp or trip circuit supervision relay type TCS.

Design and Principle:
The relay type PQ…. is specially designed for high speed operation and mechanical latching. It has flag indicator which indicates trip status when the relay latches. The relay can be hand reset by pressing in and resetting the operation indicator. The trip relays type PQ.. are instantaneous, plunger type relay with 4/6/7 contacts with double interruption. They are designed to operate from d.c. The low burden relays can also operate from a.c. when preceded by rectifier. The relay has a magnet system which comprises a fixed core and a moving, plunger-type armature, actuating the contact bar directly.

When the coil is deenergized, the armature of the magnet and the contact bar are forced back into their initial position by spring action when relay is resetted.  The contacts are arranged symmetrically in two rows, on either side of the magnet,clearly visible and readily accessible. The high burden relays have 2 cutoff contacts in series with coil, which ensures momentory high burden during pick up which is cut off
after relay operation. The terminals on 1/2’S’ flush mounting case have an opening which can accommodate
two wires with a crosssection of 1.5mm².

ABB PSU14nCJW High Speed Tripping Relay – High speed high burden tripping relay, hand/ electrical reset contacts with operation indicator

• Type: Electro Mechanical Relay.
• Protection Type: High Speed Tripping Relay.

Features

• High degree of reliability, even when it has been idle for a long time
• PSU14n.. with mechanical flag type indicator
• 6 / 14 contacts with double interruption
• Contact configuration can be changed with ease
• Different mounting variants
• Wide range of voltage and contact configuration

Application
For remote and automatic control there is often a need for contactors which have two stable contact positions, even in the dead state. This requirement is fulfilled by changeover contactors type PSU..n.. The application of alternate control pulses to the coils cause the contacts to change from the one state to the other. If the supply is interrupted, the contacts remain in their previous position, even when the voltage is restored.

Design and principle
Basically, the PSU changeover contactors are composed of the same constructional elements as the established contactors type P8n. Two magnet systems are inter- connected by a pivoted element. In the type PSU6n… with 6 free contacts, only one system has contacts; in type PSU14n… with 14 free contacts, both systems have contacts. In each case two contacts are required for changing over the connection of the coils.

The contacts are arranged symmetrically on both sides of the relay coil and armature assembly in two stacks. They are easily accessible and the conversion from N/C to N/O contacts and vice versa is simple. The maximum rated voltage is 250V d.c. or a.c. and the material used is hard silver. The following definitions apply for reset and operate
condition; reset condition – Armature assembly position is away from the base i.e. the upper system has been pulsed and lower system is ready to be pulsed. The flag strips are invisible i.e. white during this condition. Operate condition – Armature assembly position is closer to the base i.e. the lower system has been pulsed and upper system is ready
to be pulsed. The flag strips are visible i.e. red during this condition.

A transparent, incombustible cover with a gasket protects the contacts against dirt. The terminals of the contact stacks themselves permit two wires of 1.5mm diameter maximum to be secured. The terminals on the base for the external wiring have holes with a diameter of 3.8mm. The terminals on the plug-in base can accommodate two wires, each 2 with a cross-section of 2.5mm . Changeover relays must always be mounted with the contact post horizontal, that is with the base on a vertical surface. The plug-in version offers many advantages, both from the point of view of
installation and afterwards for maintenance. It is fitted with locating pegs which prevent it from being inserted the wrong way round. The labelling of the terminals on the base is identical to that on the contact stacks.

ABB PSU6n-X Bi-Stable Relay – Bi-Stable Relay, Electrically Reset Contacts without Operation Indicator

Application
For remote and automatic control there is often a need for contactors which have two stable contact positions, even in the dead state. This requirement is fulfilled by changeover contactors type PSU..n. The application of alternate control pulses to the coils cause the contacts to change from the one state to the other. If the supply is interrupted, the contacts remain in their previous position, even when the voltage is restored.

• Type: Electro Mechanical Relay.

Protection Type: Bi-Stable Relay.

Features

• High degree of reliability, even when it has been idle for a long time
• PSU14n.. with mechanical flag type indicator
• 6 / 14 contacts with double interruption
• Contact configuration can be changed with ease
• Different mounting variants
• Wide range of voltage and contact configuration

Design and principle
Basically, the PSU changeover contactors are composed of the same constructional elements as the established contactors type P8n. Two magnet systems are inter- connected by a pivoted element. In the type PSU6n… with 6 free contacts, only one system has contacts; in type PSU14n… with 14 free contacts, both systems have contacts. In each case two contacts are required for changing over the connection of the coils.

The contacts are arranged symmetrically on both sides of the relay coil and armature assembly in two stacks. They are easily accessible and the conversion from N/C to N/O contacts and vice versa is simple. The maximum rated voltage is 250V d.c. or a.c. and the material used is hard silver. The following definitions apply for reset and operate
condition; reset condition – Armature assembly position is away from the base i.e. the upper system has been pulsed and lower system is ready to be pulsed. The flag strips are invisible i.e. white during this condition. Operate condition – Armature assembly position is closer to the base i.e. the lower system has been pulsed and upper system is ready
to be pulsed. The flag strips are visible i.e. red during this condition.

A transparent, incombustible cover with a gasket protects the contacts against dirt. The terminals of the contact stacks themselves permit two wires of 1.5mm diameter maximum to be secured. The terminals on the base for the external wiring have holes with a diameter of 3.8mm. The terminals on the plug-in base can accommodate two wires, each 2 with a cross-section of 2.5mm . Changeover relays must always be mounted with the contact post horizontal, that is with the base on a vertical surface. The plug-in version offers many advantages, both from the point of view of
installation and afterwards for maintenance. It is fitted with locating pegs which prevent it from being inserted the wrong way round. The labelling of the terminals on the base is identical to that on the contact stacks.

ABB PSU6nCJW High Speed Tripping Relay – High Speed High Burden Tripping Relay, Hand/ Electrical Reset Contacts with Operation Indicator

• Type: Electro Mechanical Relay.
• Protection Type: High Speed Tripping Relay.

Electromechanical and solid state relays

For new applications where reliable operation is essential, in harsh environments, or in existing installations where an exact replacement is required

ABB electromechanical relays have protected the power system for more than 100 years, and with the proper inspection, maintenance, and testing techniques, these relays can guard the power system for many more years.

Solid state electronic components provide a similar function to electromechanical relays but do not have any moving components, increasing long-term reliability.

ABB distribution automation products:

ABB delivers a full range of genuine IEC 61850 protection and control products also including network automation. ABB’s IEC 61850 compliant solutions offer a unified user-experience for operating power distribution systems from the secondary substation level up to the NCC level. The unified user-experience provides enhanced reliability, safety and the operational efficiency of network control and management. The protection and control devices also measure and collect data from the power system and intelligent network components to support the asset and business management of power system operators.

ABB distribution automation products are built to withstand the rigors of the most demanding environments including marine and offshore, industrial facilities such as mines and paper and petrochemical plants, as well as utilities in urban and rural locations.

ABB RXPQ8n High Speed Tripping Relay – High speed tripping relay, hand reset contacts with operation indicator

• Type: Electro Mechanical Relay.
• Protection Type: High Speed Tripping Relay.

OTHER HIGH SPEED TRIPPING RELAY RX SERIES

1. RXPSU6n , with 6 free contacts and without operation indicator
2. RXPSU14n with 14 free contacts and operation indicator
3. RXPQ8n

Features
High degree of reliability, even when it has been idle for a long time
7 contacts with double interruption
Contact configuration can be changed with ease
Wide range of voltage & contact configurations
Special versions -RXPQ8n….. High speed locking relay hand reset

Application

The auxiliary relays type RXP8n,RXPQ8n are used for all kinds of control and protection circuits in power stations and industrial installations, where a high degree of reliability and a high contact rating are stipulated, with minimal internal consumption. Acting as an instantaneous switching element, it provides galvanic separation and contact multiplication in tripping and signaling circuits of protective relays.

Design and principle
The auxiliary relays in the COMBIFLEX system, type RXP8n and RXPQ8n are instantaneous plunger type
relay with 7 contacts with double interruption. They are designed to operate from D.C. The magnet system comprises a fixed core and a moving, plunger-type armature, which actuates the contact bar directly. When the coil is de-energized , the armature of the magnet and the contact bar are forced back into their initial position by a spring
action. The contacts are arranged symmetrically in two rows, on either side of the magnet, clearly visible
and readily accessible.

They are designed for a maximum rated voltage of 250V D.C. or A.C. The material used for the contact tips is hard silver. At the most, 3 normally closed contacts are permissible, which should be distributed evenly between two sides. The field weakening resistor is cut in by means of a delayed normally closed contact on a special contact bar in series with the coil.
The relay type RXPQ8n is specially designed for high speed operation and mechanical latching. It has an operation indicator which, pops out when the relay latches. The relay can be manually reset by pressing in and resetting the operation indicator.
A transparent protective hood of material that does not burn readily provides good protection against dust. The plug-in relay module occupies two seats (2U 12C). The auxiliary relays should always be mounted with their contact bar horizontal.

ABB RXPSU6n Bi-Stable Relay – Bi-Stable relay, electrically reset contacts without operation indicator

Application
For remote and automatic control there is often a need for contactors which have two stable contact positions, even in the dead state. This requirement is fulfilled by changeover contactors type RXPSU…n. The application of alternate control pulses to the coils cause the contacts to change from the one state to the other. If the supply is interrupted, the contacts remain in their previous position, even when the voltage is restored.

• Type: Electro Mechanical Relay.
• Protection Type: Bi-Stable Relay.

Features

• High degree of reliability, even when it has been idle for a long time
• RXPSU14n is with mechanical flag type indicator
• 6 / 14 contacts with double interruption
• Contact configuration can be changed with ease
• Wide range of voltage and contact configuration

Design and principle

The bistable relays in the COMBIFLEX system, type RXPSU6n and RXPSU14n are composed of the same constructional elements as the established contactors type P8n. Two magnet systems are interconnected by a pivoted element. In the type RXPSU6n… with 6 free contacts, only one system has contacts; in type PSU14n.. with 14 free
contacts, both systems have contacts. In each case two contacts are required for changing over the connection of the coils. The contacts are arranged symmetrically on both sides of the relay coil and armature assembly in two stacks. They are easily accessible and the conversion from N/C to N/O contacts and vice versa is simple. The maximum rated voltage is 250V d.c. or a.c. and the material used is hard silver. The following definitions apply for reset and operate
condition; reset condition – Armature assembly position is away from the base i.e. the upper system has been pulsed and lower system is ready to be pulsed. The flag strips are invisible i.e. white during this condition. Operate condition – Armature assembly position is closer to the base i.e. the lower system has been pulsed and upper system is ready
to be pulsed. The flag strips are visible i.e. red during this condition.

A transparent, incombustible cover with a gasket protects the contacts against dirt. The terminals of the contact  stacks themselves permit two wires of 1.5mm diameter maximum to be secured. Changeover relays must always be mounted with the contact post horizontal, that is with the base on a vertical surface. The plug-in relay module occupies two seats (2u 12C).

The supervision relay type ABB RXTCS Auxiliary Relay or electromechanical relay is intended for a continuous supervision of circuit breaker trip circuit and gives an alarm for loss of auxiliary supply, faults on the trip-coil or its wires independent of the breaker position, faults on the breaker auxiliary contacts and faults in the supervision relay itself.

RXTCS electromechanical relay Technical Specification

• Type: Electro Mechanical Relay.
• Protection Type: Supervision Relay.

ABB RXTCS Features

• Continuous supervision of complete trip circuit independent of the circuit breaker position.
• Detects faults in the supervised circuits, such as loss of voltage, circuit breakage, contact degeneration in connections and resistivity increases in wires, contacts and coils
• Low-level measuring current enables application in sensitive or high resistance circuits
• Operation delayed to avoid spurious signals, for instance, on circuit breaker operation
• Operation indication by a single dual colour LED
• Complete range of rated voltages either ac or dc
• Galvanic isolation is possible between auxiliary source and supervised circuit
• Very low burden on auxiliary source

In a protection system the tripping of circuit breaker is crucial. Should an interruption occur in a trip circuit a possible network fault would not be disconnected and the fault would have to be cleared by another protection upstreams in the power system. The supervision function is particularly important when there is only one tripping coil and CB tripping is vital, for instance, for generator circuit breakers or other important circuit breaker in distribution networks.

ABB UVT92M Supervision Relay, the fuse failure relay is a high speed static relay intended for continuous monitoring of fuses against blowing out or inadvertent removals. This relay can be used for one, two or all three phase fuse failure detection. The plug-in socket type design for terminals, supports ease of installation and maintenance.

Technical Specification

• Type: Electro Mechanical Relay.
• Protection Type: Supervision Relay.

• Fast operation
• 1, 2 or 3 phase fuse fail detection
• No continuous drain on D.C. auxiliary supply
• Hand reset LED operation indication
• Sensitivity down to 2.5VA load on secondary

Application
The fuse failure relay is intended for continuous monitoring of fuses against blowing out or inadvertent removals. In application where failure or inadvertent removal of fuse may cause incorrect tripping.
The relay can also be used for supervision of potential transformer fuses so as to give blocking signals to voltage operated protection schemes such as distance protection, under impedance and under voltage relays. It can be used for alarming purpose in synchronizing circuits.

Design and principle of operation
The fuse failure relay is a high speed static relay with built-in electro mechanical output relays providing two change over signaling duty contacts. The relay can operate for single, two or three phase fuse failure in secondary circuit.
During the normal operation, the potential across the fuses is nearly zero. When fuse fail will occur in any of the phase, the potential across the particular fuse goes up. This potential drives the circuit path for external LED indication and relay output.

The fuse fail in any phase is indicated by ‘Trip’ LED and will remain latched until reset push button is pressed and fuse is healthy. After replacing the faulty fuses, the output contacts can be reset. The plug in socket design for terminals facilitates ease of installation and maintenance. The relay is suitable for flush mounting on panel and is
sufficiently protected against any ingress. A unique Plug-in PCBA assembly and sheet metal case makes the relay robust and light weight.

ABB VHXM22B Static Protection Relay – Under voltage relay with variable time delay

• Type: Electro Mechanical Relay.
• Protection Type: Static Protection Relay

Application
The relay type VHXm is a static under/over voltage relay used for detection of under voltage (or loss of voltage) or over voltage in the AC system. Relay is used for over voltage protection and supervision in distribution systems. Relay is also used for overvoltage / undervoltage protection of Generators, Motors and Transformers.

Design and principle
The VHXm is a AC voltage measuring relay. Different versions are available for a) Fixed voltage setting with instantaneous operation b) Variable voltage setting with or without variable time delayed operation. The AC voltage to be measured is applied at terminal 3 and 4. The input voltage is isolated, scaled and suitably conditioned for measurement.
Operating voltage level and time delay can be set with the potentiometer on the front-panel of the relay.
The product of the potentiometer setting and multiplier (marked) is the set operate time for relay.
The VHXm is powered by a DC auxiliary supply. The relay has a built-in electro-mechanical output relay providing medium duty contacts. The output relay also has one red hand reset flag. The relay is available in draw-out type flush
mounting model.

STATIC PROTECTION RELAY PRODUCT RANGE

• VHXm22A (40-80% of Un Under voltage, W/O time delay)
• VHXm22B (40-80% of Un Under voltage, with variable time delay)
• VHXm23A (80-140% of Un Over voltage, W/O time delay)
• VHXm23B (80-140% of Un Over voltage, with variable time delay)
• IRXm

ABB VHXM23B Static Protection Relay – Over voltage relay with variable time delay

The relay type VHXm is a static under/over voltage relay used for detection of under voltage (or loss of voltage) or over voltage in the AC system. Relay is used for over voltage protection and supervision in distribution systems. Relay is also used for overvoltage / undervoltage protection of Generators, Motors and Transformers.

• Type: Electro Mechanical Relay.
• Protection Type: Static Protection Relay.

OTHER HIGH SPEED TRIPPING RELAY RX SERIES

1. RXPSU6n , with 6 free contacts and without operation indicator
2. RXPSU14n with 14 free contacts and operation indicator
3. RXPQ8n

FEATURES

• High degree of reliability, even when it has been idle for a long time
• RXPSU14n is with mechanical flag type indicator
• 6 / 14 contacts with double interruption!
• Contact configuration can be changed with ease
• Wide range of voltage and contact configuration

APPLICATION

For remote and automatic control there is often a need for contactors which have two stable contact positions, even in the dead state. This requirement is fulfilled by changeover contactors type RXPSU…n. The application of alternate control pulses to the coils because the contacts to change from the one state to the other. If the supply is interrupted, the contacts remain in their previous position, even when the voltage is restored.

Design and principle
The VHXm is a AC voltage measuring relay. Different versions are available for a) Fixed voltage setting with instantaneous operation b) Variable voltage setting with or without variable time delayed operation. The AC voltage to be measured is applied at terminal 3 and 4. The input voltage is isolated, scaled and suitably conditioned for measurement.

Operating voltage level and time delay can be set with the potentiometer on the front-panel of the relay.
The product of the potentiometer setting and multiplier (marked) is the set operate time for relay.
The VHXm is powered by a DC auxiliary supply. The relay has a built-in electro-mechanical output relay providing medium duty contacts. The output relay also has one red hand reset flag. The relay is available in draw-out type flush
mounting model.