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Sp
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Par
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5
1.3
General inspection of the switchgear assembly
(withdrawable or plug-in, disconnectable, raila-
ble technique)
1.3.1
Design of conductors and conductor installation
Condition of insulation
2a
1a
X
Measure the insulation
resistance
1.3.2
Check electrical equipment installed
Bracing
Check contact corrosion, contact gaps, ionization chamber,
arc splitter, rated currents, settings and tripping
For the complete main-
tenance work, observe
the instructions of the
equipment manufactur-
er
Minimum creepage distance
12,5 mm
Check minimum clearance for arcing space
Cf. equipment manu-
facturer
1.3.5
Required protection class
EN 60529
1.3.6
Check efficiency of protective conductor connection
Check continuity with signal test apparatus
2a
1a
X
1.3.7
Function test of the control device
In accordance with circuit diagram
2a
1a
X
Control connection
cable.
1.3.8
Check measuring loops
In accordance with circuit diagram
2a
1a
X
2.0
Additional checks
2.1
Withdrawable technique
2.1.1
Compact modules (8E/4 + 8E/2)
Check easy movement of module in compart-
ment
Remove dust and grease from guide rail if necessary
2 - 3a
1a
X
Function test of mechanical interlock
Lubricate with Omnigliss
2 - 3a
1a
X
Check electrical contact-making
2a
1
1a
1
X
Main contacts
Visual inspection
Refer to
In case of doubt check contact clearance
Chapter 5.5
Greasing
Refer to chapter 5.6
Control plugs
Visual inspection of module compartment
Remove dust from guide rail with vacuum cleaner
Actuate limit switch rocker (if available)
Check condition of mating contacts
Artificial light source
Check efficiency of protective conductor con-
nection
Check cam condition at supporting rail
2.1.2
Withdrawable modules
4E
Check easy movement of module in compart-
ment
Function test of mechanical interlock
1
Main contact to be checked either according the mentioned time intervals or latest after 100 cycles.