AUMSHIVAY ENGINEERING PRIVATE LIMITED
B-21, Bhan Nagar, Queens Road, Jaipur-302021
Website: www.aumshivay.com, www.omengineering.in
E-mail:[email protected]
PAGE. 11
REG. OFFICE:VILLA NO. 60,LATA NAGAR, KALWAR ROAD, JHOTWARA, JAIPUR - 302012
TM
TM
Motor Protection Relay (MM10);
These Relay is a microprocessor based Motor Protection Relay with 4 digits LED
Display MM10 is a motor protection relay that combines thermal overload, short circuit, undercurrent, unbalance, phase loss,
phase sequence, lock/stall rotor and earth fault protections. These incorporates a 4-digit LED indicator which allows direct
numerical readout of set values, actual measured value and system indication. MM10 has 2 relay outputs (R1 and R2). R1 is On
under normal operating condition to allow motor running, and off during tripping. R2 is programmable to give signal in various
conditions. A programmable binary input is provided to perform various operations upon binary input triggering.
MOTOR PROTECTION RELAY (MM10)
ITEM
Compact Motor Protection Relay
MAKE
L&T
MODEL
MM10
SIDE LABELS
All data pertaining to pick up level and applicable time delays
are indicated on a label on right hand side of the unit. The
wiring diagram label is provided on the left hand side of the
unit.
Display
Current and Thermal Capacity Display:
During power up,
when the relay is not under tripping condition, the display
shows current in ampere or thermal capacity %. The Function
LED indicates which parameter is being displayed. The Data
LED showing value.
Press “UP” or “DOWN” to scroll through the parameters.
Auto Scroll:
When auto scroll is enabled, the display scrolls
between currents and thermal reading every 10 seconds. To
toggle auto scroll mode, press "UP" and "DOWN"
simultaneously
*LED Display: i) Run LED -
Run LED shows the motor status.
Refer to 3.2.1 Motor Starting.
Off -
Motor stopping,
Blink -
Motor starting,
On -
Motor running
*
Trip LED:
Trip LED is normally off. During tripping pickup,
where tripping delay is counting down, Trip LED blinks. Trip
LED on during tripping.
Off
-
Normal
Blink
- Pickup
On -
Tripping
*
Thermal LED:
Thermal LED blinks when motor current is
more than 105% of IB. Thermal LED on during thermal
overload tripping, and when thermal capacity is more than
40% after overload tripping (in which R1 is off, motor not
allowed to start).
Off -
Normal
Blink -
Thermal overload warning
On -
Thermal overload tripping, Thermal capacity high, R1 off.
