ABB PQFM - Page 27

Manual Power Quality Filter PQFM  Hardware description 27
2
3
4
11
14
1
5
6
10
13
7
8
12
9
Figure 11: PQFM main components (cULus version)
The component identification is given in Table 11.
Table 11: PQFM main components description
Item
Description
Circuit
diagram designation
1
Main contactor (MC)
K2
2
Fuse holder auxiliaries circuit
Q2
3
Auxiliary voltage transformer
T1
4
DC voltage power supply 24V
U2
5
CT connection terminal
X21
6
Preload circuit resistors
R7/R6
7
Preload circuit diode
V1/V2
8
Main earth connection point
-