Littelfuse D0920 - D0920 Typical Wiring Diagram

D0920 Arc-Detection Unit Rev. 0-D-070616
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FIGURE 4. D0920 Typical Wiring Diagram.
POINT
SENSORS
12 3
RED
GREEN
SHIELD
9
10
11
12
K1
K2
NOTE 2
NOTE 3
TRIP
INDICATION
TEST AND
LOSS OF
SUPPLY
ABC
230 VAC
56
L1 L2/N
4
7
8
NOTE 1
NOTE 1
NOTE 1
TRIP
COIL
EXTERNAL
TRIP
TRIP COIL
(+)
TRIP COIL/
NEUTRAL
D0920
SENSOR
SHIELD
NOTES:
1. CAUTION: DANGEROUS VOLTAGE IS PRESENT AT TERMINALS 4,7, AND 8, SOURCED FROM AN INTERNAL STORAGE CAPACITOR. A SELF-
DISCHARGE CIRCUIT WILL DISCHARGE THE STORAGE CAPACITOR TO A SAFE LEVEL WITHIN TWO MINUTES AFTER THE AC SUPPLY HAS
BEEN DISCONNECTED.
2. RELAY CONTACT IS SHOWN DE-ENERGIZED.
3. RELAY CONTACT IS CLOSED WHEN TEST MODE IS SELECTED, OR DURING LOSS OF SUPPLY.