![ABB Relion REG670 Скачать руководство пользователя страница 1237](http://html.mh-extra.com/html/abb/relion-reg670/relion-reg670_technical-manual_46981237.webp)
22.4
Shunt resistor unit REX062
22.4.1
Introduction
REX062 is typically used when injection is done via a grounding transformer.
22.4.2
Design
REX062 for stator protection is used when either injection via a grounding
transformer (i.e. not via a VT) is used or when maximum voltage posed on injection
equipment by the generator is bigger than 120V.
REX062
Shunt Resistor unit
Injection A
Injection B
External A
External B
I sense B
I sense A
Fuse
PE
IEC11000041-2-en.vsd
IEC11000041 V1 EN
Figure 571:
REX062 Principal design
REX062 input protection
REX062 limits overvoltage by a varistor at the injection output to stator. Normally ,
REX060 will interrupt the injection circuit in case of excessive over-current in the
injection chain. Fuse within REX062 is an additional protection in case of failure
within REX062 during over-voltage condition.
A blown REX062 fuse requires a module disassembling to replace the fuse (F 6.3 A
250 V). However, if this occurs it is recommended to identify the reason for the over-
current and do needed actions to reduce the current.
1MRK502052-UEN B
Section 22
Injection equipment hardware
1231
Technical manual
Содержание Relion REG670
Страница 1: ...Relion 670 series Generator protection REG670 2 0 IEC Technical manual ...
Страница 2: ......
Страница 44: ...38 ...
Страница 58: ...52 ...
Страница 80: ...74 ...
Страница 106: ...100 ...
Страница 482: ...476 ...
Страница 548: ...542 ...
Страница 570: ...564 ...
Страница 600: ...594 ...
Страница 608: ...602 ...
Страница 630: ...624 ...
Страница 862: ...856 ...
Страница 1094: ...1088 ...
Страница 1226: ...1220 ...
Страница 1250: ...1244 ...
Страница 1297: ...1291 ...