ABB RET670 Installation And Commissioning Manual

A secondary injection test set with the possibility to alter the phase angle by
regulation of the resistive and reactive components is needed. The test set must also
be able to generate different frequencies on different outputs.
The description below applies for a system with a nominal
frequency of 50 Hz but can be directly transferred to
60 Hz.
SESRSYN can be set to use different phases, phase to earth or
phase to phase. Use the set voltages instead of what is indicated below.
Figure
66 shows the general test connection principle, which can be used during
testing. This description describes the test of the version intended for one bay.
Figure 67 shows the general test connection for a
1½ breaker diameter with one-
phase voltage connected to the line side.
Test
e
quipment
UMeasure
Ph/N
Ph/Ph
IEC05000480-2-en.vsd
U-Bus
U
-Line
N
IED
U-Bus
N
UL1
UL2
UL3
N
Input Phase
L
1,L2,L3
L12,L23,L31
IEC05000480 V2 EN
Figure 66: General test connection with three-phase voltage connected to the
line side
1MRK 504 088-UEN C Section 13
Verifying settings by secondary injection
175
Installation and commissioning manual

ABB RET670 Specifications

General

Rated Frequency	50/60 Hz
Inputs	Analog and binary inputs
Application	Protection of power systems
Communication Protocols	IEC 61850, DNP3, Modbus
Operating Temperature Range	-25°C to +55°C
Mounting	Rack mounted
Number of Binary Inputs	Up to 48
Number of Binary Outputs	32
Protection Functions	Overcurrent Protection
Outputs	Binary outputs
Enclosure	IP 54
Type	Line Differential Protection
Number of Analog Inputs	24