Bilanciai PS440 Series, Руководство по эксплуатации и обслуживанию

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DS440IS
4.8.2 How to check the installation
At the installer's charge.

Make sure that the devices used to fix the casing of PS440/xxx - PS440-A/xxx and D440IS are
efficient.

Make sure that the devices used to fix the junction boxes and connection cables are efficient.

Each component must be installed in a fixed way.

Make sure that the cables of intrinsic safety circuits are sufficiently protected and that they are
identified by "INTRINSIC SAFETY CIRCUITS" labels.

The raceways of intrinsic safety circuits must also be identified by labels.

Make sure that the intrinsic safety circuits are separated from other, non-exi, circuits.

Check the cable accesses in the cable clamps.

Make sure that the connections to the terminal boards are made with pins and that there are no
copper wires that could reduce the distance of the circuits in air.

The cable clamps must be adequately tightened.

Unused cable clamps must be plugged.

Make sure that the casings are closed with the supplied screws and that the seals are well
seated.

Make sure that D440IS has been grounded with the yellow-green cable and safety screw.

Make sure that all metal parts of the system have been grounded.

Check how power supplier PS440/xxx - PS440-A/xxx has been connected to the power main
and the external devices. Make sure that these components have been protected against over-
voltage exceeding 250 Vrms/375 VDC.

Make sure that a knife switch has been installed in the vicinity of the terminal/power supplier.

Calibrate the instrument and conduct a functional test after having come to agreements with the
person in charge of internal maintenance.