ABB SPAM 130 C relays

ABB SPAM 130 C relays

Description of function

The combined overvoltage and undervoltage relay SPAU 130 C is a secondary relay that is connected to the voltage transformers of the protected object. The relay generally measures the three phase-to-phase voltages of the system. On operating the relay trips the circuit breaker and/or provides alarm, in accordance with the selected functions and given configuration.

When one of the phase-to-phase voltage or several exceed the set start value U> of the overvoltage stage, the overvoltage stage starts delivering a start signal SS1. When, at definite time mode of operation, the set operate time t> or, at inverse time mode of operation, the calculated operate time t>, has expired, the overvoltage stage operates delivering a trip signal TS1. In the same way the undervoltage stage starts delivering a start signal SS2 when the measured value goes below the start value U< and when the set operate time t< has expired, the undervoltage stage operates, delivering a trip signal TS2.The overvoltage and undervoltage relay is generally used as a three-phase relay. But by means of a selector switch the relay can be configured as a single phase relay.

The overvoltage stage can be given definite time characteristic or inverse time characteristic. When inverse time characteristic is selected two sets of curves named A and B are available.The undervoltage stage has definite time characteristic. Tripping of the undervoltage stage can be blocked by means of a control signal BS applied to the optically isolated external control input of the relay. The overvoltage and undervoltage relay is provided with two output relays for tripping and three output relays for signalling purposes. One of the signalling relays is dedicated for the selfsupervision system of the relay.

Application

The three-phase voltage relay SPAU 130 C is intended to be used for overvoltage and undervoltage protection and supervision in distribution substations. The relay can also be used for overvoltage and undervoltage protection of generators, motors and transformers. Generally the relay measures the three phase-to-phase voltages of the system but it can also be programmed for single-phase measurement.

The overvoltage stage can be given definite time characteristic or inverse time characteristic. The undervoltage stage features definite time characteristic alone. The operation of the undervoltage stage can be blocked by means of an external control signal. The relay forms a whole including an overvoltage stage, an undervoltage stage as well as flexible trip and alarm functions.

Features

Combined overvoltage and undervoltage protection relay

Three-phase definite time or inverse time overvoltage stage

Three-phase definite time undervoltage stage

Control input for blocking of the function of the undervoltage stage by means of an external control signal

Automatic blocking of the undervoltage stage on loss of energizing voltage

Fully field-configurable output relay functions

Flexible matching of the relay to the intended protection application

Auto-diagnostic fault indication to facilitate repair after detection of permanent internal relay fault

Powerful software support for parametrization and supervision of the relay

The relay is a member of the SPACOM product family and PYRAMID®, ABB's coordinated protection and control concept