![VAMP 221 Скачать руководство пользователя страница 6](http://html1.mh-extra.com/html/vamp/221/221_operation-and-configuration-instructions-technical-description_3325850006.webp)
VAMP 221
Arc protection system
Operation and configuration instructions
VAMP Ltd
6
VAMP 24h Technical Support: +358 (0)20 753 3264
VM221.EN013
1.1.1.
Central unit VAMP 221
Figure 1.1.1-1 The central unit VAMP 221
The central unit VAMP 221 contains the following functions:
•
3-phase overcurrent and arc stage
•
Alternatively, 2-phase overcurrent, earth-fault and arc
stage
•
Circuit breaker failure protection stage (CBFP)
•
Optional trip criteria (I>&L>, I
0
>&L> or L>)
•
Two mutually independent tripping groups
•
Four output trip relays
•
Four protection zones
•
BI/O bus for light and overcurrent information
•
Status, fault and trip indications
•
Accommodates up to 16 I/O units
•
System self-supervision