Ampcontrol MPA3 V6.3, User Manual

Page: 27 / 46

MPA3 V6.3 MOTOR PROTECTION RELAY MANUAL
Issue: R0, Date: 11/2010, CRN: 8168
MPAB010 Rev0
MPA3 V6.2 Motor Protection Relay Manual
Page 26
22
MPA Specifications
Feature Details
Auxiliary Supply Volts: 240 VAC
±
20%, 50 Hz ± 2 Hz or 110 VAC
±
20%, 50 Hz ± 2 Hz
Earth Leakage Protection:
Trip Setting: 0.001 x to 0.005 x CT Ratio and ‘Off’.
Time Delay: Instantaneous and 155 ms to 475 ms
Residual Current: Trip Setting : 10% to 100% FLC and Off
Time Delay: 100 ms to 5 Seconds
Overload Protection:
Current Range: 5.125 to 640 Amps (224 values across the range. Steps of 1.6% - 3%)
6xI Trip Time: 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40 Seconds
O/L Reset Level: 30%, 40%, 50%, 60%, 70%, 80% 90%
S-Cool Ratio: 1.0, 1.5, 2.0, 2.5, 3.0, 4.0, 5.0
Current Balance:
Trip Settings: 5%, 10%, 20%, 50% and Off
Short Circuit Protection:
Trip Setting: 3.0x to 10.0x FLC 0.5 increments or Off
Trip Time: 20, 40, 60, 80, 100, 120, 160 ms
Thermistor Protection
PTC resistor < 2.2 k

Under voltage Protection:
Trip Setting: Selectable from 40% to 95% and Off
Trip Time: Trip delay 1.5 Seconds
Insulation Test:
Trip Setting: Selectable from 1.0 to 100 Meg Ohm and Off
RTD Temperature Protection:
Trip Setting:
Selectable from 60

C to 200

C and Off
Time Delay: 2 Seconds
MPA Alarms:
High Current: Selectable from 100% to 600% and Off - Time Delay 1 Second
Low Current: Selectable from 32% to 96% and Off - Time Delay 2 Seconds
Overload: Selectable from 50% to 95% and Off - Time Delay 2 Seconds
Under Current: Selectable from 32% to 96% and Off - Time Delay 2 Seconds
Earth Leakage: Selectable from 20%, 50%, 80% and Off - Time Delay 1 Second
MPA Optional Module Alarms:
Insulation Test Alarm: Selectable from 1.0 to 100 Meg Ohm and Off
RTD, Group1 & 2 Over
Temp:
Selectable from 50

C to 200

C and Off
Serial Communications:
RS485 Communication Port :
Standard Modbus RTU Protocol (MPA is a slave Device). Baud rate 1200,
2400, 4800 and 9600 with even, odd or no parity.
EtherNet/IP IP address, default gateway and subnet mask are selectable.
Relay Contacts:
MTR
1 N/0 5 A/250 VAC
1 C/0 5 A/250 VAC