ABB REL650 Technical Manual page 621

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1MRK 506 382-UEN A

Line distance protection REL650 2.2 IEC

Technical manual

Internal analogue signals

IEC10000029 V1 EN-US

Analog input function blocks

The external input signals will be acquired, filtered and skewed and (after

configuration) available as an input signal on the AxRADR function block via the

SMAI function block. The information is saved at the Disturbance report base

sampling rate (1000 or 1200 Hz). Internally calculated signals are updated

according to the cycle time of the specific function. If a function is running at

lower speed than the base sampling rate, Disturbance recorder will use the latest

updated sample until a new updated sample is available.

If the IED is preconfigured the only tool needed for analog configuration of the

Disturbance report is the Signal Matrix Tool (SMT, external signal configuration).

In case of modification of a preconfigured IED or general internal configuration the

Application Configuration tool within PCM600 is used.

The preprocessor function block (SMAI) calculates the residual quantities in cases

where only the three phases are connected (AI4-input not used). SMAI makes the

information available as a group signal output, phase outputs and calculated

residual output (AIN-output). In situations where AI4-input is used as an input

signal the corresponding information is available on the non-calculated output

(AI4) on the SMAI function block. Connect the signals to the AxRADR

accordingly.

For each of the analog signals, Operation = On means that it is recorded by the

disturbance recorder. The trigger is independent of the setting of Operation, and

triggers even if operation is set to Off. Both undervoltage and overvoltage can be

used as trigger conditions. The same applies for the current signals.

IEC10000029-1-en.vsd

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Relion 650 series