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2.2.2 Voltage signal connections
The Meter directly accepts voltages upto 415VAC R.M.S line to
line (240VAC R.M.S line to neutral) with 10% over load capacity in
case of LT meters and 110VAC R.M.S line to line (63.5 VAC R.M.S line
to Neutral) with 10% over load capacity in case of HT meters. The
primary of the PT is field programmable upto 330 kV.
There are four voltage input terminals marked as R, Y, B & N.
The three phase input voltage should be connected to those
terminals.
Meter voltage input burden : 0.25VA per phase
2.2.3 Current signal connections
The Meter current inputs can accept both 5A AC or 1A AC
R.M.S (selectable) for connecting external CT’s. The CT Primary &
Secondary value is field programmable. In both the cases, the current
inputs has over load capability of 120%.
There are three pairs of terminals marked as IR (M,L) IY (M,L)
and IB (M,L) for the connection of external CT’s. For proper
measurements, the polarity of the CT’s must be connected properly.
The CT wiring must be properly done by deenergising the CT
secondary by shorting it through a shorting block. The primary current
of CT is field programmable upto 10000A.
Meter Current input burden : 0.25VA per phase
