GE MDP User Manual

GE Power Management MDP Digital Time Overcurrent Relay 1-
7
GEK-100682D 1 INTRODUCTION
1
1.6 RANGES AND SETTINGS
The following indicates the ranges of standard models.
NOMINAL CURRENT
5 A Phase Unit Models (models 1 to 3):
Phase Unit: 1.5 to 13.125 A in cumulative increments of 0.375, 0.750, 1.50, 3.0, and 6.0 A
Ground Unit model 1: 0.5 to 4.375 A in cumulative increments of 0.125, 0.250,0.50,1.0, and 2.0 A
Ground Unit model 2: 1.5 to 13.125 Amps in cumulative increments of 0.375, 0.750, 1.50, 3.0, and 6.0 A
Ground Unit model 3: 0.1 to 0.875 Amp in cumulative increments of 0.025, 0.050, 0.10, 0.2, and 0.4 A
5 A Phase Unit Model (model 7):
Phase Unit: 0.5 to 4.375 A in cumulative increments of 0.125, 0.25, 0.50, 1.0, and 2.0 A
Ground Unit: 0.5 to 4.375 A in cumulative increments of 0.125, 0.250, 0.50, 1.0, and 2.0 A
1 A Phase Unit (models 4 to 6):
Phase Unit: 0.3 to 2.625 A in cumulative increments of 0.075, 0.150, 0.30, 0.60, and 1.20 A
Ground Unit model 4: 0.1 to 0.875 A in cumulative increments of 0.025, 0.050, 0.10, 0.2, and 0.4 A
Ground Unit model 5: 0.3 to 2.625 A in cumulative increments of 0.075, 0.150, 0.30, 0.6, and 1.2 A
Ground Unit model 6: 0.05 to 0.4375 A in cumulative increments of 0.0125, 0.0250,0.050,0.1, and 0.2 A
TIME DELAY (TOC)
Independent for phase and ground.
Depends on the curve selected. Five Inverse Time curves are available (see Section 2.5: INVERSE TIME UNIT on page 2–
3), as well as four definite times (maximum time 2, 4, 6, and 8 seconds), all in the same relay.
INSTANTANEOUS UNIT PICKUP
Independent for phase and ground.
1 to 31 times the pickup of the TOC setting.
A setting of zero (0) disables instantaneous unit. (X) no multiples selected.
INSTANTANEOUS UNIT TIME DELAY
Independent for phase and ground.
0 to 1.55 seconds in 50 millisecond steps.
PHASE OPERATING CURVES CURVE SELECTION
Available Curves: Inverse/BS142* (for 1 A models), Long Time Inverse, Very Inverse, Extremely Inverse, Four families
of definite time characteristics with maximum values of 2, 4, 6, and 8 seconds
Between each family of curves, a specific curve can be selected between 0.5 and 10 in cumulative steps of 0.5, 1, 2, 2 and
4 for 5 a relays. The 1 A model range is from 0.05 to 1.0 in cumulative steps of 0.05, 0.1, 0.2, 0.2, and 0.4.
GROUND OPERATING CURVES CURVE SELECTION
Available Curves: Inverse/BS142* (for 1 A models), Long Time Inverse, Very Inverse, Extremely Inverse, Four families
of definite time characteristics with maximum values of 2, 4, 6, and 8 seconds
Between each family of curves, a specific curve can be selected between 0.5 and 10 in cumulative steps of 0.5, 1, 2, 2, and
4 for 5 amp relays. A 1 amp model's range is from 0.05 to 1.0 in cumulative steps of 0.05, 0.1, 0.2, 0.2, and 0.4.
BS142 is the INVERSE curve of the 1 A model.
COMMUNICATIONS ADDRESS
Range: 002 to 998.
A setting of 000 indicates no communications and sets the default display to phase A Current.
For RS232 and RS485 all relays will respond to address 001.
All values are adjusted with DIP switches located at the front of the relay, except the communications
address, which is located on the rear of the cradle.
NOTE
NOTE
NOTE
Courtesy of NationalSwitchgear.com

GE MDP Specifications

General

Brand	GE
Model	MDP
Category	Relays
Language	English