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August 2009
General
This leaflet contains general installation instructions for 2-wire and 3-wire applications of the gREX meter. All meters are
factory-calibrated and tested before shipment. For proper installation, accuracy, and maximum life of the meter, use the
following installation instructions. For more information about the operation of the meter, see the gREX Meter Technical
Manual (TM42-2420) and the gREX Meter Technical Manual for use in Canada (TM42-2425).
Dangerous voltage with high current capabilities are present. Use authorised utility procedures to install and
service metering equipment. Equipment damage, personal injury, or death can result if safety precautions are not
followed.
Preliminary inspection
All meters are calibrated and tested before shipment. For proper installation, accuracy, and maximum life of the meters, use
the following installation procedures.
Use authorised utility procedures to install and service metering equipment. Dangerous voltages are present. Equipment
damage, personal injury, or death can result if safety precautions are not followed.
Before installing and applying power to the gREX meter, Elster recommends a brief inspection of the meter. Check for any of
the following items:
■
missing or broken parts
■
missing or broken wires
■
bent or cracked components
■
evidence of overheating
Also, check the nameplate to make certain the meter is appropriate for the service.
Physical damage to the outside of the gREX meter may indicate a risk of electronic damage to the inside of the meter. Do not
connect power to a meter that is suspected of having internal damage. Contact your Elster representative if you suspect your
meter may be damaged.
Placing the meter into service
See "Wiring diagrams" on page 3 for illustrations of connection wiring diagrams.
Make certain to install the correct meter for the service type, maximum current, and capacity required. Installing mismatched
meters can damage equipment. Always verify that the maximum meter voltage and current ratings are equal to or greater than
the maximum service voltage and current.
If a gREX meter is installed in a meter shop and a collector is powered at the same time, the gREX meter may have registered
to the collector. Before removing the gREX meter from the shop, the meter should be unregistered from the collector (see the
technical manual for specific instructions).
Elster
Raleigh, North Carolina USA
+1 800 338 5251 (Technical Support in the US)
+1 905 634 4895 (Canada Main)
support@us.elster.com
www.elsterelectricity.com
gREX™ Meter Installation Instructions
DANGER
!
WARNING
!
CAUTION
!
IL42-4210C
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Summary of Contents for Elster gREX
- Page 1 If a gREX meter is installed in a meter shop and a collector is powered at the same time, the gREX meter may have registered to the collector. Before removing the gREX meter from the shop, the meter should be unregistered from the collector (see the technical manual for specific instructions).
- Page 2 ■ the service voltage falls within the operating range as indicated on the nameplate ■ the seals are not broken Notes: A broken seal may be an indication of tampering with the gREX meter installation.
- Page 3 Lift the meter off the meter hanger screw. Wiring diagrams The gREX meter is available for direct connected service. Refer to the wiring diagram on the nameplate for each meter for specific terminal assignments. All connections are equipped with combination-head screws that accept either a slotted or Phillips screwdriver.
- Page 4 In no event will Elster be responsible to the user in contract, in tort (including negligence), strict liability or otherwise for any special, indi- rect, incidental, or consequential damage or loss whatsoever, including but not limited to: damage or loss of use of equipment, cost of capital, loss of profits or revenues, or claims against the user by its customers resulting from the use of the information, recommendations, descriptions, and safety notices contained herein.