ABB MNS-Up, Service Manual

Page: 79 / 84

79 M A I N T EN A N C E I N T ER VA L S
Item no. Work to be performed Measured, test and limit
values, operating and
auxiliary materials Frequency installation category Remarks
A B C
1.3
1.3.1
1.3.2
1.3.5
1.3.6
1.3.7
1.3.8
1.3.9
General inspection of
the switchgear assembly
(with-drawable or plug-in
MNS-Up modules)
Design of conductors
and conductor
installation
Check electrical
equipment installed
Required protection
class
Check efficiency of
protec-tive conductor
connection
Function test of the
control device
Check measuring loops
Check function of the
MNS-Up modules and
bat-teries
Condition of insulation
– Bracing
– Check contact corrosion,
contact gaps, ionization
chamber, arc splitter, rated
currents, settings and
tripping
– Minimum creepage
distance
≥ 12,5 mm
– Check minimum clearance
for arcing space
– EN 60529
– Check continuity with
signal test apparatus
– In accordance with circuit
diagram
– In accordance with circuit
diagram
See Conceptpower DPA500
manual
2a
2a
2a
2a
6m
1a
1a
1a
1a
6m
X
X
X
X
6m
Measure the insulation
resistance
For the complete maintenance
work, observe the instructions
of the equipment manufacturer
Cf. equipment manufacturer
Control connection cable
2.0
2.1.1
Withdrawable technique
Compact modules
(6E/4 + 6E/2/8E/4 + 8E/2)
– Check easy movement
of module in compartment
– Function test of
mechanical interlock
– Check electrical
contact-making
– Main contacts
– Control plugs
– Visual inspection of
module compartment
Check efficiency of
protective conductor
connection
Withdrawable modules
≥ 4E
– Check easy
movement of module
in compartment
– Function test of
mechanical interlock
– Remove dust and grease
from guide rail if neces-
sary
– Lubricate with Omnigliss
– Visual inspection
– In case of doubt check
contact clearance
– Greasing
– Remove dust from guide
rail with vacuum cleaner
– Actuate limit switch rocker
(if available)
– Check condition of mating
contacts
– Check cam condition
at supporting rail
2 - 3a
2 - 3a
2a1
1a
1a
1a1
X
X
X
Refer to chapter 5.5
Refer to chapter 5.6
Artificial light source