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Technical
Section 11
Dimensions
Section 12
8
Powerpact 4 panelboards
Metering facilities for
incoming and outgoing
circuits
The arrangement consists of side extension boxes that house the meters and also
provide additional cabling space. Meters and current transformers are ordered
separately to meet the needs of the installation. The necessary cable looms are
included wi th the steelwork. The meters are mounted on hinged doors. The box also
contains the auxiliary busbar that provides the 240V control supply for the meters. The
left hand extensions have sufficient meter positions for half the number of outgoing
ways. The right hand extensions have positions for half the number of outgoing ways
plus three additional positions. These extra positions may be used for additional
metering or mounting surge arresters, control fuses etc. The lower two positions have a
transparent window and DIN rail. This can be removed if not required.
Note: the meters, CT modules and surge arresters must be ordered separately
Incoming and outgoing metering for boards up to 630A
(This arrangement is not applicable for boards fitted with MGPINC direct connections).
When both incoming and outgoing metering is required there is a very cost effective
solution by incorporating the incoming metering into the right hand side extension box.
Components required are:
n
Standard extension box MG6CEX to provide the required cable spreading space
n
Current transformer module to fit on line side of incoming breaker.
n
PM750MG meter.
n
Two MGPC2025 corner units, optional
The meter should be cabled to the CT module according to the diagram supplied.
(loom not supplied). The auxiliary supply to the meter should be taken from one phase
and neutral and must be suitably fused.
Note. A warning notice should be placed in the board as the voltage connections are
taken off the live side of the main breaker.
MG6Cxx 630A board
Incoming metering kit 400A
MG64M
630A
MG66M
MG8Cxx 800A board
Incoming metering kit 800A
MG88M
MG88MX - less meter
630A & 800A outgoing metering side extension boxes
6 way board
Left hand side (*)
3 meter positions
MGPCM6L
Right hand side (*) 7 meter positions
MGPCM6R
12 way board
Left hand side (*)
6 meter positions
MGPCM12L
Right hand side (*) 9 meter positions
MGPCM12R
18 way board
Left hand side (*)
9 meter positions
MGPCM18L
Right hand side (*) 11 meter positions
MGPCM18R
(*) When the board is inverted for top entry main cables these side extensions fit
on the other side of the board.
Accessories
Cable loom
MGPCML
Meter blanks
03908
MG2C* 250A board
Incoming metering kit 250A
MG6CEXM
Ordering references
250A powerboard with metering facility
13 SP positions
MG25C2M
17 SP positions
MG25C4M
250A Panelboard
Incoming/Outgoing metering
The metering extension box allows for metering for the incoming and outgoing
devices to be metered. The kit comes complete with a fuse holder and wiring looms
to provide power to the meters. The meters and CT modules are ordered separately.
630 & 800A Panelboards
Incoming metering
This is easily added to a board when it is first being installed. The kit comprises
an extension box that houses the meter and, when fitted to the same end of the
board as the incomer, provides additional space for the main incoming cables. All
components including the meter, CTs and wiring is included in the kit. The meter is
fully set up for the CT ratio and the voltage configuration.
Outgoing circuit metering
Metering can be fitted to some or all of the three phase outgoing circuits on 630A &
800A boards whether the boards are fitted with incoming metering or not.