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Home ⊙ NEWS ⊙ ABB SPAJ 140 C Combined overcurrent andearth-fault relay Features
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ABB SPAJ 140 C Combined overcurrent andearth-fault relay Features

From:ABB | author:Mr.Chen | Time :2025-07-28 | 2 view: | Share:

Features

Three-phase, low-set phase overcurrentunit with definite time or inverse definiteminimum time (lDMT) characteristic

Three-phase, high-set phase overcurrentunit with instantaneous or defnite timeoperation

Low-set earth-fault unit with definite time o!inverse definite minimum time (lDMT) cha!acteristic

High-set earth-fault unit with instanta-neous or definite time operation

Built-in circuit-breaker failure protection

Two heavy-duty and four signal outputrelays

Output relay matrix allowing start or tripsignals from the protection stages to berouted to the desired output relay

Local display of measured and set valuesand data recorded at the moment of a fault

Reading and writing of setting values either

via local display and front panel push-but-tons or from higher-level systems over theserial interface and the fibre-optic bus

Self-supervision system continuously mon.itoring the operation of the electronics andthe microprocessor

Powerful software support for parameter-ization of the relay, for reading measuredand recorded values, events, etc.. and forstoring

readings

Member of the SPAcOM product family,ABB's Distribution Automation system andABB's Panorama concept

CE marking according to the Ec directivefor EMC

Application

The combined overcurrent and earth-faultrelay SPAJ 140 C is intended to be used forthe

selective short-circuit and earth-fault pro-tection of radial feeders in solidly earthed,

resistance earthed or impedance earthedpower systems.

The integrated protectionrelay includes an overcurrent unit and anearth-fault unit with flexible tripping and signalling facilities.

The overcurrent and earth-fault relays can also be used for other applica-tions requiring single-,

two-, or three-phase overcurrent protection.

The combined over.current and earth-fault relay includes a cir-cuit-breaker failure protection unit.

The combined overcurrent and earth-faultrelay SPAJ 140 C is pait of ABB's Distribu-tion Automation concept,

which is a productsegment of Panorama, the complete ABBsolution for the control and management ofelectric power systems.

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