MC3V-X/10-4
Doc. N°
MO-0355-ING
Microe
ner
- Copyright 20
11
FW
940.09.01.x
Date
06
.0
1
.20
11
Rev.
4
Pag.
5
of
32
2. General Characteristics
The MC is a very innovative and versatile line of Protective Relays which takes advantage of the long
and successful experience coming from the M-Line.
The main features of the MC-Line relays are:
Compact draw-out execution for Flush Mounting or for assembly in 19” 3U chassis for 19” Rack systems.
User friendly front face with 2x8 characters LCD Display, four signal Leds, four keys for complete local
management and 9-pin socket for local RS232 serial communication.
Four user programmable Output Relays. On request one of the Output Relays can be replaced by a Can
Bus port for control of additional I/O modules.
Three optoisolated, self-powered Digital Inputs.
RS485 communication port (independent from the RS232 port on front panel)
Totally draw-out execution.
Input voltage is supplied to 3 internal isolated transformers.
The Measuring Ranges are:
Phase Voltage
: (0.1 - 2)Un
Frequency
: (40.00 - 70.00)Hz
Make electric connection in conformity with the diagram reported on relay's enclosure.
Check that input quantities are same as reported on the diagram and on the test certificate.
2.1 - Power Supply
The auxiliary power is supplied by a built-in module fully isolated an self protected.
Two options are available:
24V(-20%) / 110V(+15%) a.c.
80V(-20%) / 220V(+15%) a.c.
a) -
b) -
24V(-20%) / 125V(+20%) d.c.
90V(-20%) / 250V(+20%) d.c.
Before energising the unit check that supply voltage is within the allowed limits.