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2 INSTALLATION
The addition of a GE Power Management MPM (Motor Protection Meter) option allows the 269Plus user to
monitor and assign protective features based on voltage and power measurement. The MPM also provides
four isolated analog outputs representing current, watts, vars, and power factor. These meter outputs can pro-
vide the signals for the control of the motor or a process.
a) MPM EXTERNAL CONNECTIONS
Physical and cutout dimensions for the MPM are shown in Figure 2–21: MPM MOUNTING DIMENSIONS.
Once the cutout and mounting holes are made, use the eight #6 self-tapping screws to secure the relay.
b) MPM WIRING
Signal wiring is to box terminals that can accommodate wire as large as 12 gauge. CT, VT, and control power
connections are made using #8 screw ring terminals that can accept wire as large as 8 gauge.
Consult the figures on pages 2–33 to 2–36 for suggested wiring. For proper operation of the MPM and
269Plus, MPM control power and phase CTs/VTs must be connected. Other features may be wired depending
on the MPM model ordered.
c) CONTROL POWER (5/6/7/8)
Control power supplied to the MPM must match the installed power supply. If the applied volt-
age does not match, damage to the unit may occur.
WARNING
A universal AC/DC power supply is standard. It covers the range 90 to 300 V DC and 70 to 265 V AC at 50/60
Hz. It is not necessary to adjust the MPM as long as the control voltage is within this range. A low voltage
power supply is available as an option. It covers the range 20 to 60 V DC and 20 to 48 V AC at 50/60 Hz. Verify
from the product identification label on the back of the MPM that the control voltage matches the intended
application. Connect the control voltage input to a stable source for reliable operation. A 2 A fuse is accessible
from the back of the MPM by sliding back the fuse access door. Using #8 gauge wire or ground braid, connect
Terminals 5 and 6 to a solid system ground, typically a copper bus in the switchgear. Extensive filtering and
transient protection is built into the MPM to ensure reliable operation under harsh industrial operating environ-
ments. Transient energy must be conducted back to the source through filter ground terminal 5. The filter
ground terminal (5) is separated from the safety ground terminal (6) to allow dielectric testing of switchgear
with a MPM wired up. Connections to the filter ground terminal must be removed during dielectric testing.
When properly installed, the MPM meets the interference immunity requirements of IEC 801 and ANSI
C37.90.1.
GE Power Management
Courtesy of NationalSwitchgear.com
MPM
Figure 2–19: CONTROL POWER WIRING
269Plus Motor Management Relay
METER OPTION INSTALLATION
2.23 METER OPTION INSTALLATION
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