Description

ABB PQ8nCH2J High Speed Tripping Relay

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

Technical Specification of ABB PQ8nCH2J High Speed Tripping Relay

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

Technical Specifications	Details
Model No :	PQ8nCH2J
Relay type	PQ8nCH2J High Speed Tripping
Auxiliary voltage	24/30/48/110/125//220/250 V DC and for AC 110/240 V AC
Type of mounting	Flush mounting
Contact configurations	7NO+0NC/ 6NO+1NC/ 5NO+2NC/ 4NO+3NC
Typical applications	Low burden tripping

 

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.

ELECTROMECHANICAL MASTER TRIP RELAYS PQ_ SERIES

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

 

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