Controlled Switching — Buyer´s Guide
B-9
Edition 2, 2006-09
Explanations
Explanations
Configuration of Substations
Substations
Different substation arrangements may call for special solutions for
overall total functionality. Double circuit breaker schemes and “one-and-
a half” circuit breaker schemes (breaker-and-a-half) may require special
arrangements for attaining proper function of adaptation control.
For full flexibility, one-and-a half circuit breaker schemes require special
design of control circuits and more than one controller per circuit breaker.
Type and Routine Test
Tests
Type and routine tests are performed in accordance with international
standards. See Quality Control and Testing, Chapter N-.
Commissioning
Commissioning
Upon commissioning, it is advisable to record some controlled switching
operations to judge the overall performance of the complete controlled
switching system.
When controlled switching is arranged by using controllers E3, E23 and
F236 our recommendation is to record the following quantities:
- Busbar voltages (or at least the reference voltage)
- Load currents
- Processed delayed output command(s)
The processed output commands are used to determine contact
separation and permit for evaluation of the arcing times.
The same quantities should be recorded when switching is controlled by
controllers L83 and T83. If possible, it is also advisable to record the load
side voltages when using these controllers.
