On Site Dynamic Testing for OLTC & Transformer Breakdown with CMU TNBT AMKL

MHYPPS Sales & Technical Team were invited by Asset Maintenance and Condition Monitoring Unit TNB Transmission Kuala Lumpur to collaborate with their substation team to investigate breakdown incidents one of their in service power  transformer by using our advanced test instruments from IBEKO POWER AB , Winding Ohmmeter and On Load Tap Changer Analyser – RMO60TC series. This unique and durable test instruments were specially  design to detect any faulty or problems in the Transformer windings and also in the On Load Tap Changer (OLTC) by applying a Static and Dynamic Measurement .We had SUCCESSFULLY carry out full dynamic and static test on the 132/33KV 45 MVA TAKAOKA Transformer on 15-07-2010 and detecting the problems inside the OLTC and the results have been verified through through analysis including on site inspections.

Some of our nice testing pictures together with CMU AMKL AND TNBTKL  MAINTENANCE TEAM  at PMU Damansara Height,Kuala Lumpur.

TAKAOKA T2 45MVA TESTING RESULT BEFORE & AFTER SERVICING JOB

A)    STATIC RESISTANCE TEST RESULT

BEFORE

PHASE U                                                                               PHASE V

AFTER

PHASE U , V & W STATIC RESULT RESPECTIVELY

B) DYNAMIC  MEASUREMENT  TEST  RESULTS

i) RESULTS BEFORE SERVICING JOB

PHASE U CONTINUOUS TEST                                               PHASE U SINGLE TAP TEST

PHASE V CONTINUOUS TEST                                              PHASE V SINGLE TAP TEST

PHASE W  FAULTY                                                               LV SIDE DRM GRAPH

ii) RESULTS AFTER SERVICING JOB

a) PHASE U TESTING ON CONTINUOUS AND SINGLE TAP MODE

b) PHASE V TESTING ON CONTINUOUS AND SINGLE TAP MODE

c) PHASE W TESTING ON CONTINUOUS AND SINGLE TAP MODE

d) TRANSITION RESISTORS SEEN THROUGH DYNAMIC MEASUREMENT

e) DYNAMIC RESISTANCE MEASUREMENT ON LV SIDE – DELTA CONNECTIONS

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OVERHAULS JOBS FOR THE FAULTY OLTC FOUNDS :-

CONTACT OVERHEATING , LIGHT COKING ACTIVITY , CONTACTS DISCONTINUITY , DETERIORATED CONTACTS SURFACE , SELECTOR CONTACTS SPRINGS JAMMED , LIGHT COKING ACTIVITY, METAL HOT SPOT AND HARD CARBONIZED PARTICLES.

MHYPPS SALES & TECHNICAL TEAM WITH TNBT CMU-AMKL TESTING PICTURES

OLTC FAULTY EVEN SELECTOR CONTACT SWITCH BEFORE AND AFTER SERVICING JOB PICS

We would like to express our thanks to TNBT AM KL SUBSTATION & CMU TEAM for the collaboration opportunity to determined the On Site Dynamic Test By Using RMO60TC to detects the FAULTY COMPONENTS OF OLTC which lead to the founding of contact arcing and other related problems …

Compliments By :-

For more information regarding our instruments,  please contact our sales department via email at salesgroup@mhypropower.com or contact our SALES DIRECTOR , MR MOHD HANEEF MOHD YASIM @ 019-7782600 for further information regarding our instruments.