Report of findings

Report of findings -
Workshop

We attach great importance to accuracy and traceability for you in our reports from the workshop. We only do all this so that you can see the most transparent price structure possible and always see what has been done to your devices.

Below you will find an exemplary report of one of our orders from our workshop.

Report of findings

Make: A.v.K
Type: DIG 130i/4
Number: 8325522 C103
Spg. Controller: Cosimat N+ / QPF / CUN1
Performance: 6300V, 2,067 KVA – 189A – 1,500 rpm – 7000 kg

The generator was delivered to our workshop by the customer, where it was dismantled and inspected. The generator was installed incl. Coupling elements delivered

Insulation resistors

Stator winding Test voltage 5000 V DC

U – PE: 13,77 G
V – PE: 13,09 G
W – PE: 11,72 G
U – V: 21,4 G
V – W: 22,5 G
U – W: 25,4 G

Pole wheel winding Test voltage 500 V DC > 200.00 MOhm

Exciter rotor winding Test voltage 500 V DC > 200.00 MOhm

Auxiliary winding Test voltage 500 V DC > 200.00 MOhm

Polarization index 3.79

The insulation resistances are in a good range despite the dirty condition.

Pictures of the repair

Please check whether these are still on site.

The protective grilles are missing.

Diagnostics

Main terminal box

Detailed view of a controller / QPF

Controller N+ / QPF / CUN1

Controller terminal strip

The clutch

Rotating rectifier

Non-drive side of blind dismantled, view of rotating rectifier, terminal strip and converter

Dismantling (B-side)

End shield - fit in the shield heavily worn

Rolling bearings

Exciter rotor

Loose and damaged bandaging

Exciter stator

View into the stator / generator

A-side

Detailed view of winding groove outlet

Shaft A-side

Fit in the end shield

Winding

Pole wheel

The Reich Arcusaflex ACH11SN coupling

The diodes and varistors should also be replaced.

The clutch should be replaced/provided.