![ABB RET620 Скачать руководство пользователя страница 6](http://html.mh-extra.com/html/abb/ret620/ret620_product-manual_4638006.webp)
Table 1. Supported functions, continued
Functionality
CTs & VTs
Three-phase thermal overload protection for power transformers, two time constants
●
1)
Loss of phase (undercurrent), instance 1
●
1)
Loss of phase (undercurrent), instance 2
●
2)
Stabilized and instantaneous differential protection for 2-winding transformers
●
Numerical stabilized low impedance restricted earth-fault protection, instance 1
●
1)
Numerical stabilized low impedance restricted earth-fault protection, instance 2
●
2)
High impedance based restricted earth-fault protection, instance 1
●
1)
High impedance based restricted earth-fault protection, instance 2
●
2)
Circuit breaker failure protection, instance 1
●
1)
Circuit breaker failure protection, instance 2
●
2)
Three-phase inrush detector
●
1)
Master trip, instance 1
●
Master trip, instance 2
●
Arc protection, instance 1
○
5)
Arc protection, instance 2
○
5)
Arc protection, instance 3
○
5)
Multipurpose analog protection, instance 1
●
Multipurpose analog protection, instance 2
●
Multipurpose analog protection, instance 3
●
Multipurpose analog protection, instance 4
●
Multipurpose analog protection, instance 5
●
Multipurpose analog protection, instance 6
●
Multipurpose analog protection, instance 7
●
Multipurpose analog protection, instance 8
●
Multipurpose analog protection, instance 9
●
Multipurpose analog protection, instance 10
●
Multipurpose analog protection, instance 11
●
Multipurpose analog protection, instance 12
●
Control
Circuit-breaker control, instance 1
●
1)
Circuit-breaker control, instance 2
●
2)
Disconnector control, instance 1
●
1)
Disconnector control, instance 2
●
1)
Earthing switch control, instance 1
●
1)
Disconnector control, instance 3
●
2)
Disconnector control, instance 4
●
2)
Earthing switch control, instance 2
●
2)
Transformer Protection and Control
1MRS757846 A
RET620
Product version: 2.0
6
ABB
Содержание RET620
Страница 1: ...Relion 620 series Transformer Protection and Control RET620 Product Guide ...
Страница 62: ...62 ...