10 2576780000/00/02-2018
Installation
Voltage metering
The Energy Meter 610/610-PB can be used for voltage measure-
ment in TN, TT and IT systems.
Voltage measurement in the Energy Meter 610/610-PB is de-
signed for the 300 V overvoltage category CAT III (4 kV rated pulse
voltage).
DC
AC/DC
PE
277V/480V 50/60Hz
L2
L3
N
L1
Auxiliary
energy
Measuring voltage
4M
4M
4M
4M
V1 V3V2 VN
Energy Meter 610/610-PB
240V
50/60Hz
N
L1
System
earthing
Fig.: Principle circuit diagram - Measurement in three-phase
4-wire systems.
In systems without a neutral, measured values that require a neu-
tral refer to a calculated neutral.
480V 50/60Hz
DC
AC/DC
L2
L3
Auxiliary
energy
Measuring voltage
4M
4M
4M
4M
V1
V3V2
System
earthing
Impedance
L1
VN
Energy Meter 610/610-PB
Fig.: Principle circuit diagram - Measurement in three-phase
3-wire systems.
Rated mains voltage
Lists of the networks and their rated mains voltage in which the
Energy Meter 610/610-PB can be used.
Three-phase 4-wire systems with earthed neutral conductor.
U
L-N
/ U
L-L
66V / 115V
120V / 208V
127V / 220V
220V / 380V
230V / 400V
240V / 415V
260V / 440V
277V / 480V Maximum rated voltage of the network
Fig.: Table of the rated mains voltages suitable for the voltage
measuring inputs according to EN 60664-1:2003.
Unearthed three-phase, 3-wire systems.
U
L-L
66V
120V
127V
220V
230V
240V
260V
277V
347V
380V
400V
415V
440V
480V Maximum rated voltage of the network
Fig.: Table of the rated mains voltages suitable for the voltage
measuring inputs according to EN 60664-1:2003.
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