Chapter 8 Electrical Installation
Mini-Switch LB 471
8.3 Connecting the Evaluation Unit to
Power
Installation work on the electrical equipment may be carried out
only in the idle state.
The components concerned have to be turned off first and have to
be secured against restoring power.
The respective VDE and Ex-regulations have to be observed.
In Ex-facilities which are not intrinsically safe voltage may be on
the detector line only after the line has been connected to the de-
tector and the connection box has been properly closed.
Before establishing the connection, check if the line voltage
matches the voltage for which the device has been designed.
The supply of the evaluation unit(s) has to be guided via a sepa-
rate fuse. An easily accessible shut-down has to be foreseen if the
power supply unit supplied is not equipped with a power switch.
In a 19" rack, mains connection is established via the “LINE”
terminals on the instrument rear panel.
Wall housing:
The terminal clamps are accommodated in the connection box
at the bottom of the case. Unscrew cover.
Cassette
The terminal clamps are located on the optional terminal block.
Connection diagrams on page 137 in the Appendix.
The measurement is ready for operation as soon as the:
- lines have been properly connected
- supply voltage has been turned on
- shielding has been opened
Operation and calibration of the evaluation unit is described in the
software manual in the second user’s guide.
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