SPAJ140C 组合式过电流与接地故障继电器

The ABB SPAJ 140C is a combined overcurrent and ground fault relay designed for radiant feeders in direct, resistance or impedance grounded power systems to provide selective protection against short circuits and ground faults. Here are some of the key features and parameters of the product:

Product model: SPAJ 140 C
Manufacturer: ABB
Main functions:
Three-phase, low-setpoint overcurrent units with timing or inverse fixed time (IDMT) characteristics are available.
Provides three-phase, high-setpoint overcurrent units with instantaneous or timed operation.
Provides a low-setpoint ground fault unit with timing or inverse fixed time (IDMT) characteristics.
Provides a high-setpoint ground fault unit with instantaneous or timed operation.
Built-in circuit breaker failure protection.
Has two heavy duty and four signal output relays.
The measured value, set value and data recorded at the time of failure are displayed locally.
Settings are read and written via the local display and front panel buttons or via the serial interface and fiber bus of the parent system.
Self-monitoring systems continuously monitor the operation of electronic devices and microprocessors.
Powerful software support for relay parameter setting, reading measured and recorded values, and event storage.
It belongs to ABB’s SPACOM family of products and ABB distribution automation systems.
CE certification according to the EU Electromagnetic Compatibility (EMC) Directive.
Scope of application:
It is suitable for user terminal substations with voltage levels of 10kV and below.
Covering power, construction, office distribution network and other industries.
Applicable to overhead lines, cable lines, and cable input and outlet cabinets.
The SPAJ 140 C is part of ABB’s Distribution Automation concept and offers a complete ABB solution for controlling and managing power systems. It is a highly flexible, easy to operate and monitor relay for a variety of power system scenarios and provides reliable protection for the stable operation of the power system.