PMA-Relay S 3PH
from 60A to 210A
Wiring instructions
17
8.5.
Connection Diagram for 3 phases (control on 3 phases) from 60 to 90A
Caution:
this procedure must be performed only by qualified persons.
Note:
*1 A suitable device must ensure that the unit can be electrically isolated from the supply
(electromagnetic circuit breaker or by fuse isolator), this allows the qualified people to
work in safety.
* 2 Only for the HB option See par. “Heater break Alarm and SCR short circuit”
* 3 The heat-sink must be connected to the earth.
* 4 Only for the Analog Input option, the analog input isn’t isolated from Aux Supply
a series connection between analog inputs of the units is not possible.
With AC Aux supply it’s not possible connect the zero terminal of Analog Input to the earth.
With DC Aux supply is not possible to connect the zero of the power supply with the zero of
analog input
