VAMP Ltd Arc protection system
User manual
VAMP 220 / 220R
VM220.EN004 Vamp 24h support phone : +358 (0)40 573 6316
25
Us
CTs
TRIP1
To slave
Trip alarm
SF Alarm
Figure 5.3.2-1 Connections of the master unit (example).
5.3.3. Wiring secondary circuits of current
transformers
Connect the secondary circuits of the current transformers to
the following screw terminals at the rear of the master unit
(see Figure 5.3.3-1 ):
X1-1, X1-2 (L1)
X1-3, X1-4 (L2) (E/F (220R))
X1-5, X1-6 (L3)
(see Figure 5.3.7-2 for E/F schemes using VAMP 220R)
The arc protection system can also be two-phase or single-
phase connected. But for obtaining optimal operating speed, a
three-phase connection is recommended.
NOTE!
The specified 7 ms operating time can be guaranteed only if
three-phase current measurement or two-phase current + E/F
(220R) is used.
To Next Page
Loading...
