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Mechanical construction
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– E650 Series 4 – ZMD400AT/CT, ZFD400AT/CT – User Manual
© Gyr
3
Mechanical construction
This section describes the mechanical construction of the ZxD400xT meter
and shows the most common connection diagrams.
3.1
Housing
The internal construction of the meters is not described here, since they are
protected following calibration and official certification on delivery by a
manufacturer and certification seal. It is not permitted to open the meters
after delivery. The front door is only secured with a utility seal and can be
opened to operate the reset button, to change the battery, to exchange the
tariff faceplate with connection diagram or to fit or remove a communication
unit (see figure 22 and separate user manuals for the communication units
available).
The following drawing shows the meter components visible from outside.
Figure 21. Meter ZxD400xT
1
Combined suspension hanger
(open or concealed)
10
Display "down" button
2
Screw with manufacturer seal
11
Front door tariff faceplate
3
Optical test output reactive
energy
consumption (red),
ZxD400CT only
12
Upper part of case
4
Optical test output active energy
consumption (red)
13
Lower part of case
5
Liquid crystal display (LCD)
14
Utility seal for front door
6
Optical interface
15
Terminal cover
7
Screw with certification seal
16
Terminal cover screws with
utility
seals
8
Front section with main faceplate
17
Alarm LED (optional)
9
Display "up" button
The meter case is made of antistatic plastic (polycarbonate). The upper
part of the case is provided with two transparent plastic viewing windows,
affording a view of the main faceplate (top) and the tariff faceplate (bottom).
The lower part of the case is additionally glass-fibre reinforced.
Case