Chapter 2. Technical Data
M7IRDA2003I
7IRD-A/J/M: Distribution Protection & Control Terminal
© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020
2-2
2.1
Power Supply Voltage
Value selectable according to model
24-48 Vdc (±20%)
110-125 Vdc (±20%)
220-250 Vdc (±20%)
90-250 Vdc/ac (±20%)
Note: in case of an auxiliary power supply voltage failure, terminal units can tolerate a maximum interruption
of 100ms at 110Vdc.
2.2
Protection Subsystem
2.2.1
Power Supply Burden
Quiescent
7 W
Maximum
20 W
2.2.2
Current Analog Inputs
Nominal Value
In = 5A
or
1A
(depending on the model)
Thermal Withstand Capability
4 In
(continuously)
50 In
(for 3 s)
100 In
(for 3 s)
Dynamic Limit
240 In
Current Circuit Burden
In
=
5A <0.2VA
In =
1A <0.05VA
2.2.3
Measurement Accuracy
Current
< 5 %
or
20 mA
(the greater)
for
In = 1A
or
5A
2.2.4
Accuracy of Time Measurement
Definite Time and Inverse Time
E
=
5 %
or
25
ms
(the greater)
(UNE 21-136 and IEC 255)
