Culus Version Protection Scheme - ABB PQFM Instruction Manual

Table 21: Optional power circuit fuse characteristics for PQFM filters (CE version)
Filter rating [A]
70 – 100
130 – 150
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)
208 £ Ue £ 480
480 £ Ue £ 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
L1
L2
L3
Figure 30: Symbolic representation of the PQFM input protection (cULus version)
52 Electrical design and installation ç Manual Power Quality Filter PQFM
Power circuit fuse Irms fuse
type (Arms)
NH Fuse gL or gG 160
NH Fuse gL or gG 200
Control circuit
fuse type
French Ferrule 10
X 38 gG/gl
French Ferrule 14
x 51 gG/gl
To PQFM
power stage
Isc (a) fuse
(kA) at rated
voltage
120
120
Irms fuse Isc (a) fuse
(Arms)
(kA) at rated
voltage
6 ~ 120
6 ~ 80
175A (Class J Time delay)-(208 £ Ue £ 480V)
175A (Class J Time delay)-(480 < Ue £ 600V)
To PQFM
control circuit
Rated Voltage (Vrms)
500
500
Rated Voltage (Vrms)
500
690
Figure
2.5mm² reinforced
6A (Class CC)
PQFM filter unit
Ue: filter nominal voltage
30.