General description
UM0527
12/66
The power line contains:
●
two pole separation relays DPNO (RL1) (with 2 mm gap)
●
two relays DPDT (RL2, RL3)
●
two pole switching battery/mains relays DPDT (RL4)
●
two pole output on/off relays DPNO (RL5)
All relay
coils are powered from the battery and charger voltage. The current transformer is
used for monitoring UPS output current and power. The additional AVR boost/buck
autotransformer has two sections: winding and output power 60VA. Relay coils are
controlled by the microcontroller signals through an additional driver.
1.1.7 RFI/EMI
filter
Figure 5.
RFI/EMI filter
An additional EMI/RFI filter contains one X-type capacitor and a pair of Y-type capacitors.
L
N
C120
4,7nF
AC_IN1
AC_IN2
PE
R90
200k
MAINS
RFI/EMI FILTER
RV1
JVR-20N471K
R88
200k
R89
200k
JVR-20N271K
AC_IN1
AC_IN2
1
J9
6.3x0.8
1
J10
6.3x0.8
1
J11
6.3x0.8
C119
4,7nF
C108
470nF
BROWN
BLUE
YELLOW/GREEN