Cewe Prometer 100, User Manual

Page: 7 / 72

BGX501-943-R01 Prometer 100 User Manual Page 7 of 72
4 Physical Features
Prometer 100 is configurable for HV 3-phase 3-wire, HV 3-phase 4-wire or LV 3-phase 4-wire and is suitable for
mounting in a panel or on a wall. Prometer 100 has self-powered and auxiliary-powered variants. The auxiliary-
powered variant also comes with dual auxiliary support so that you can put AC or DC voltage for main and
backup supply for powering up the meter. The auxiliary circuit is not intended to be connected to the secondary
of measurement VT. For example, the VT secondary supply of 63.5 V AC (phase to neutral voltage) or 110 V
AC (phase-to-phase voltage) needs to be supplied as a voltage input to the product. Similarly three CTs, namely
R/L1, Y/L2 and B/L3, need (as applicable) to be given as a current input to the product of 1A/ 5A from
secondary side.
Note:
•
Only Prometer 100-W variants can be configured as LV 3-phase 4-wire.
4.1 Power Supply, Auxiliary and Other Details
Details for the power supply and measurement options are shown below:
Figure 2: Power Supply Options
Variants Main supply Backup supply
No. of Aux power
supply inputs
supported
Range of Aux supply
Field Replaceable
Battery
(for meter reading
and viewing
display)
Self+Aux
power
supply
Aux. supply
input
(Aux 2)
Measurement
voltage terminals
(VT supply)
One
(Aux 2)
60-240 V AC/DC ± 20%
or
24-48 V DC ± 20%
Optional
Self
power
supply
Measurement
voltage
terminals (VT
supply)
Not available Not available Not applicable Optional
Auxiliary
power
supply
Aux. supply
input
(Aux 2)
Aux 1 (optional)
Two (dual)
(Aux. 1 & Aux. 2)
Both as 60-240 V AC/DC ± 20%
or
one as 24-48 V DC ± 20%
Optional
Table 1: Different Power Supply and other Variants available in Prometer 100