MainsPro, SW version 1.4, ©ComAp – January 2013
MainsPro Reference Guide
Technical parameters
Maximum consumption 600 mA
Not galvanically separated from power supply 85 - 265 VAC!
85 - 265 V/45-65 Hz,
110 - 370 V
Maximum consumption 90 mA
Operating temperature range
120 V / 230 V ph-n / 400 V ph-ph
Rated frequency of measured
voltage
50 Hz,60 Hz
(indicated accuracy is guaranteed on frequency range 40-70 Hz)
Measurement input impedance:
Max switched voltage/current
resistive load: 1000 VA AC, 200 W DC
inductive load: 50 VA AC, 25 W DC
resistive load: 250 V / 4 A AC
200 V / 0,1 A DC, 24 V / 4A DC
inductive load: 250 V / 2 A AC
200 V / 0,1 A DC, 24 V 3A DC
Terminal tightening torque
II, double insulation , the device has no protective earthing
terminal (IEC 61140)
Recommended fuse of the unit
power supply and measurement
circuits
Intended use according to UL508
standard
MainsPro is intended for use with switchgear and
associated equipment as per the category for Protective relays –
NRGU
The unit is intended for use on a DIN rail inside a switchboard with prevention of access of non-
qualified personnel. In case of access of non-qualified personnel, it is necessary to cover the terminals
by means corresponding to the environment of the unit operation. It is possible to make the user
interface accessible to the operation staff.
Endurance to the power supply voltage fails
MainsPro unit withstands the power supply voltages failures of 100 ms lengths in the full range of
power supply voltage on the 85 - 265 VAC / 110 - 370 VDC terminals and at the voltage .18 - 40 VDC
connected to the 8 - 40 VDC terminals. The construction of the power supply allows that the unit
withstands the voltage drop down to min 40 VAC in case that the unit was started from the AC voltage
within the allowed range 85 - 265 VAC. Such a drop of the voltage for unlimited time does not
influence the unit operation.
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