Fixing And Connection - Elster A1100 Operating & Maintenance Instructions

24
A1100 - Electronic Polyphase Meter
4. The cables for the pulsing output must use a twisted pair. Where the environment is electrically
hostile screened, twisted pair cable may be required. The screen must be connected to earth at
one point only
5. Ancillary equipment must also be CE marked
6. If interposing relays are used (a.c. or d.c.) then these must be correctly and adequately
suppressed
17.6

Fixing and Connection

Installation must always be carried out by appropriately trained and qualified personnel in
accordance with normal metering custom and practice.
The installer is responsible for the choice of connecting cables which must be appropriate for the
voltage and current rating of the meter and for ensuring that the supply is properly fused.
For current circuits, 25mm
the meter rating. i.e. 100A fuse for a 100A meter. Failure to do so may result in damage or fire.
For TOU circuits the phase supply to the timeswitch contact MUST be protected by a fuse rated at a
maximum of 2A.
Refer to the connection diagrams inside the terminal cover, paying particular attention to the
auxiliary terminal configuration.
Isolate all circuits before carrying out the installation.
Refer to the nameplate to ensure that the correct meter is being installed.
Failure to comply with these instructions may result in damage, fire and/or electric shock.
To mount the meter on the meter board
Remove the meter terminal cover.
Fix a 5mm dia. x 13mm long round headed wood screw into the meter board to accommodate the
keyhole fixing aperture at the back of the meter. Note that a choice of two fixing points are
available for the upper fixing screw (see figure 6). Leave the shank of the screw projecting from the
board by 4.5 mm.
Hang the meter on the screw and align it to be vertical.
Secure the lower end of the meter to the board using two 5mm dia. x 13mm long round head screws
through the lower mounting holes in the area of the terminal chamber.
Tighten screws just sufficiently to prevent movement of the meter.
WARNING
Do not over-tighten the screws or the meter base may be damaged.
© Elster Metering Systems - M180 001 1E - 6.2005
WARNING
2
cables are recommended. Meters must be protected by fuses equal to