Electrical Equipment; Electrical Parts; Wiring; Contamination And Attachment Of Foreign Matter - KITO ER2 Serie Manuel Du Propriétaire

Chapter 2 Inspection
Periodic Inspection (continued)

■ Electrical Equipment

Item
Electrical
Parts

Wiring

2
Contamination
and
attachment of
foreign matter

VFD

■ Electric Characteristics Measurement

Item
Source
Voltage
Insulation
Resistance
82
Check method
• Remove the Controller
Cover and check the
electrical parts visually.
• Check the number of start
with the CH Meter.
• Check the parts with service
life
(see VFD Manual.)
Check method
• Measure the voltage with a
circuit tester.
• Measure the insulation
resistance with megger.
(Resistance between
energized and non-
energized parts ··· Each
phase of R(L1), S(L2) and
T(L3) and the earth wire)
Criteria
• To have no damaged or burnt part.
• To have no loosened bolt. Electrical parts
must be mounted securely.
• The number of start must not exceed the
guidelines for replacement (P91).
• Wiring must be fixed to the Electrical Parts
securely.
• Connectors must be inserted securely.
• To have no wire breakage and burning
• To have not waterdrop or foreign matter.
• Electrolytic capacitor: 3000 hours (depending
on the use)
Criteria
• The source voltage of the rated voltage ± 10
% at the receiving terminal must be supplied
when operating with the capacity.
DANGER
• Be careful of electric shock
when measuring the voltage.
Electric shock may result in
Mandatory
death or serious injury.
• Insulation resistance must be 5 MΩ or higher.
DANGER
• Turn off the power when
measuring the insulation
resistance.
Measuring the insulation
Mandatory
resistance without turning off
the power may result in death
or serious injury.
When failed
Replace the damaged
or burnt electrical part.
Mount the electrical
part securely.
Replace the electrical
part with service life.
Connect wirings
securely.
Replace the wiring with
new wiring, referring
to Chapter 3 Guidance
on Failure Cause and
Countermeasures.
(P94 to 96)
Remove the foreign
matter.
• Replace the VFD.
When failed
Supply proper voltage.
Replace the Body
size.