Description Of Configuration Ret670; Introduction; Description Of Configuration A30 - ABB RELION 670 Series Applications Manual

Section 3
Configuration
3.2

Description of configuration RET670

3.2.1

Introduction

3.2.1.1

Description of configuration A30

The configuration of the IED is shown in Figure 2.
This configuration is used in applications with two winding transformers with single or double
busbars but with a single breaker arrangement on both sides. The protection scheme includes
a 3–phase tripping scheme with a synchronism check function for manual closing of the low
voltage side breaker. The high voltage breaker is foreseen to always energize the transformer
and be interlocked with an open LV side breaker.
The differential protection is the main protection function. It provides fast and sensitive
tripping for internal faults. Stabilization against through faults, inrush and overexcitation are
standard features.
Measuring functions for S, P, Q, I, U, PF, f are available for local presentation on the local HMI
and/or remote presentation. The availability of additional analog inputs allows connection of
separate metering cores and a calibration parameter on the measurement function allows
calibration at site to very high accuracy.
The following should be noted. The configuration is made with the binary input and binary
output boards in the basic IED delivery. In many cases this is sufficient, in other cases, for
example with full control of all apparatuses included more IO cards are required. Our proposal
for a full version with control is to use two Binary input modules and one Binary output
module. For systems without substation automation a second binary output board might be
required.
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1MRK 504 152-UEN B
IP14806-1 v2
IP14807-1 v2
M15203-3 v6
Application manual