• In case of auxiliary-powered and self-powered variants, meter will draw power from Aux 2 supply input.
In its absence it will shift to Aux 1 supply (in case of auxiliary-powered variant) and VT supply (in case
of self-powered variant).
• Do not connect voltage transformer (VT) to any of the Aux supply input terminal as a general practice. If
it is necessary to connect VT secondary to Aux input then make sure to connect it to the Aux1 supply
only in presence of Aux 2 so that burden on measurement VT secondary can be minimal.
• Connect your reliable auxiliary supply source like DC bank/AC lighting load/ Aux power transformer etc
to Aux 2 terminal only so that meter burden will be handled by it; or take your best judgment to connect
auxiliary supply source considering the rating and suitable operation of meter and best installation
practices followed.
• The field replaceable battery can be configured to support meter reading in absence of mains power
supply depending on the requirement. It only supplies sufficient power to the meter reading and display
circuitry and will not fully power-up the meter. Contact the concern sales representative or technical
team regarding this useful feature. The battery can be replaced in the field. Take care while inserting
the battery; make sure that the polarity and fitment are correct.
• Ensure that the correct auxiliary voltage rating is used with the meter. The wrong voltage rating could
cause damage to the meter. Therefore it is recommended to verify and crosscheck the rating-plate on
the actual product in use at the site.
Figure 3: Rating Plate of Prometer 100-W (To be verified with realistic information and updated as per latest
changes)
Figure 4: Rating Plate of Prometer 100-R (To be verified with realistic information and can show one of the
rating plates with Aux 1 supply, ‘MADE in UK’ & S. No. here shown in bold and in Wall-mount not bold so
we should use same font style in order to maintain consistency, and updated as per latest changes)
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