Installation, handling and maintenance
82
Technical changes reserved
7.4
Operation, maintenance and enlargement
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Extensive information can be found in the assembly instructions.
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The initial operation after assembly and installation of the busbar trunking
elements is carried out at the user’s site by an electrically skilled person with
testing experience. It includes
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An initial check with visual inspection for completeness
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A check of mechanical condition
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Continuity check of protective conductor circuit (< 0.1 ohm)
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Measurement of voltage drop
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The units may not be serviced or operated by an unqualified person.
7.4.1
Maintenance
Maintenance free
The unibar H busbar system is maintenance free, provided the following
conditions are met:
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The assembly has been carried out in accordance with the assembly
instructions.
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A recorded insulation measurement and a visual inspection were carried out
after the assembly.
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The commissioning was carried out properly.
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The busbar is free from
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Mechanical stress and external forces,
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Impairments due to foreign objects, dust, liquids,
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Exposure to aggressive media (e. g., acids),
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Vibrations,
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Other incident-related stresses caused by short circuits, fire or evolution
of gas.
Maintenance free does not refer to devices that are used in tap-off units, feeder
units and coupling boxes. The checking and maintenance of these devices must
be carried out in accordance with the relevant product information.
Inspections and checks by an electrical specialist are required,
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under special operating conditions or ambient conditions,
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in the event of special circumstances, such as moisture, condensation, water
entering the surroundings of the busbar trunking system, contamination or
vibrations,
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in the event of mechanical damage caused, for example, by work in the
vicinity of the busbar trunking system.
The variant of the unibar H busbar system with protection type IP55/IP65
provides the option of checking the tightening torque of the bolts in the joint
blocks at any time. Checking and, if necessary, retightening can be carried out
without switching off the busbar trunking run. When doing this, observe the
measures for live working according to EN 50110 (VDE 0105--1) and national
regulations and standards.
Summary of Contents for Unibar H 800 A
Page 1: ...Busbar system unibar H System manual 800 A to 4000 A...
Page 10: ...Construction and characteristics 10 Technical changes reserved...
Page 19: ...Construction and characteristics Technical changes reserved 19 Notices...
Page 40: ...Product selection 40 Technical changes reserved Copper...
