ABB PQFM - Culus Version Protection Scheme

52 Electrical design and installation  Manual Power Quality Filter PQFM
Table 21: Optional power circuit fuse characteristics for PQFM filters (CE version)
Filter rating [A]
Power circuit fuse
type
Irms fuse
(Arms)
Isc
(a)
fuse
(kA) at rated
voltage
Rated Voltage (Vrms)
70
–
100
NH Fuse gL or gG
160
120
500
130
–
150
NH Fuse gL or gG
200
120
500
Remark:
(a)
fuse short circuit current capability
Table 22 gives the control circuit fuse characteristics for CE filters.
Table 22: Control circuit fuse characteristics for PQFM filters (CE version)
Nominal
network
voltage (Vrms)
Control circuit
fuse type
Irms fuse
(Arms)
Isc
(a)
f
use
(kA) at rated
voltage
Rated Voltage (Vrms)
208
≤
Ue
≤
480
French Ferrule 10
X 38 gG/gl
6
~ 120
500
480
≤
Ue
≤
690
French Ferrule 1
4
x 51 gG/gl
6
~
80
690
Remark:
(a)
fuse short circuit current capability
6.7.2 cULus version protection scheme
For cULus versions of active filter, the input protection scheme is given in Figure 30.
L1
L2
L3
To PQFM
power stage
To PQFM
control circuit
2.5mm² reinforced
6A (Class CC)
175A (Class J Time delay)-(208
≤
Ue
≤
480V)
175A (Class J Time delay)-(480 < Ue ≤ 600V)
Ue: filter nominal voltage
PQFM filter unit
Figure 30: Symbolic representation of the PQFM input protection (cULus version)