Functionality - ABB 615 series Technical Manual

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1MAC059074-MB A

615 series ANSI

Technical Manual

Functionality

The reverse power/directional overpower protection function 32R/32O can be used for

generator protection against delivering an excessive power beyond the generator's

capacity to the grid, against the generator running like a motor, and against the motor

running like a generator and for protecting a motor which consumes more reactive power

due to loss of field. It can also be used in feeder protection for indicating overload on the

distribution system, to indicate that a customer is supplying power into the grid and for

protecting the transformer from delivering an excessive load.

The function picks ups and trips when the measured power exceeds the set limit and in a

specified direction. The operate time characteristics are according to definite time (DT).

This function contains a blocking functionality. It is possible to block the function outputs,

timer or the function itself, if desired.

Operation principle

The function can be enabled and disabled with the Operation setting. The corresponding

parameter values are "Enable" and "Disable".

The operation of 32R/32O can be described by using a module diagram. All the modules

in the diagram are explained in the next sections.

GUID-7AABB604-0901-4815-841F-352961249261 V1 EN

Functional module diagram

Protection functions

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