Enf1 Tripped, Possibly In Combination With Mains Fuses; Check For Open Springs At Damping Resistors; Check For Contacts That Are Welded At Breakers And Contactors - Philips Optimus Manual

Converter test kit OPTIMUS for OPTIMUS 50/65/80 gen‐
erators release 3.x with converters 4512 104 7231x
3.1.2

ENF1 tripped, possibly in combination with mains fuses

Problem most likely caused by kV unit malfunction (kV-control, kV-power, converter(s), HV transformer) or external
parts e.g. HV cable(s) or tube.
WARNING
▪ Open the cover of the frontal (and rear where present) converter.
▪ Measure DC at PCB kV-power EQ100 at E2 – C1 (at both converters, see layout drawings attached).
The measured DC must be < 10VDC.
3.2 C
HECK FOR OPEN SPRINGS AT DAMPING RESISTORS
EN :R1 safety resistor 47Ω 100W
:R2
:R3
▪ Record the conditions in the checklist (last pages).

▪ Check for open springs at damping resistors.

Springs might be open if all breakers are ON when the service comes to the site.
In this case the generator must have been switched ON after all fuses and breakers were reactivated. Short-
circuit in the converter or its mains rectifier/filter could have happened.
Springs can be resoldered. If the springs have to be resoldered, use as little solder as possible.
▪ Check that the ceramic resistor bodies do not have cracks. In case of cracks the springs must be resoldered.
3.3 C
HECK FOR CONTACTS THAT ARE WELDED AT BREAKERS AND CONTACTORS
▪ Switch OFF breakers ENF1 and ENF2.
ENF1 L1 – T1
L2 – T2
L3 – T3
ENF2 L1 – T1
L2 – T2
L3 – T3
ENK1 phase 1 2 – 1
phase 2 4 – 3
phase 3 6 – 5
Conv test Optimus
Make sure that the DC voltage in the converter is discharged.
automatic circuit-breaker ENF1
automatic circuit-breaker ENF2
contactor ENK1
CSIP Level 1 (08.0)
© 2008 Koninklijke Philips Electronics N.V.
ALL RIGHTS RESERVED
4512 100 45441
Optimus 50
or successor
Optimus 65/80
or successor
Optimus 50/65/80
or successor
Optimus 50
or successor
+ R/C circuit
Optimus 65/80
or successor
+ R/C circuit
2422 129 15514
2422 129 16291
2422 129 15513
2422 129 16292
2412 129 00341
2422 129 16288
2422 132 06625
2422 132 07382
2422 135 04662
2422 132 06624
2422 132 07383
2422 135 04662
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