ORION ITALIA IPR-D, Инструкция по эксплуатации

Страница: 8 / 53

Chapter 1: General information
CURRENT PROTECTION RELAY - IPR-D Manual P/N: IPR-D GBM 01/09/2006 1.2
The 5 selectable time-current curve shapes are the following:
- moderately
inverse
- normally inverse
- very inverse
- extremely inverse
- definite time
The 3 programmed curve types are the following:
- ANSI
- IAC
- IEC / BS142
All curve shapes have a time multiplier (M) allowing modifying the trip time.
For the 3 possible curve types and their shapes see: Æ Appendix A
REMARK : when selecting the curve for the circuit breaker trip, make sure the max. input current to IPR-D
does not exceed 100 A for more than 1 second
⇒
the wrong combination of time and current could
damage the unit and consequently provoke the loss of protection.