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ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY
QNA-303 --
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11
5.2.- Connection cables
Power supply
U
(L1-L2-L3)
RS 232/485
Antena Radio / GSM
Voltage connector U(L1, L2, L3):
QNA Pin Description
1
Voltage
U
L1
2
Voltage
U
L2
3
Voltage
U
L3
1
2
3
4
5
6
7
5 *
Neutral
* Note:
This connection is not required when the monitored distribution system has
no neutral conductor
Power supply:
QNA Pin Description
1
Power supply AL1
2
Power supply AL2
1
2
3
4
3 Earthing
terminal
The connection of the earthing terminal is essential to
assure the efficiency of QNA-303 protective elements.
