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ABB ReliaMod RMM B 4R Installation And Maintenance Instructions Manual page 2

Modular metering

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Mounting of units
1. Install the wall-rails:
Determine position of wall-rail (dimension A) by using the
unit with the highest dimension X in your layout, the
diagram below, and regional utility and
electrical codes.
Utility spec.
(Max. meter position)
Z
Y
X1
A
Utility spec.
(Min. meter position)
Grade level
Dimensions X, Y, Z and V are provided in Tables 1 for
main-modules and Table 2 for meter-modules.
Once dimension A is determined, strike a level line
for the fasteners and attach the mounting rails.
Meter
module
Main
module
V1
V2
X2
Electrical code
or project spec.
Electrical code
or project spec.
2

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