It is important to maintain consistent measurement conditions in contact resistance testing to be able to compare with previous and future results for trend analysis. Therefore, when taking periodic measurements, the contact resistance test must be performed in the same location, with the same test leads (always use the manufacturer's calibration cable) and under the same conditions to be able to know when to connect, connect, solder or The device will become insecure.
The test items are required for 110kV/220kV substation acceptance and maintenance testing(with corresponding tester types):
Test Object |
Testing Item |
Tester Type |
|
Cable |
Cable AC Hipot Testing |
JYCX |
|
Cable Insulation Resistance Testing |
JYM KYORITSU |
||
Transformer |
Insulation Resistance of Winding |
JYM KYORITSU |
|
DC Leakage Testing in 1min |
JYDHV |
||
Winding Resistance Testing |
JYR50S |
||
Winding Deformation Testing |
JYP |
||
Turns Ratio Testing |
JYT-A |
||
AC Hipot Testing |
JYCX |
||
Short Circuit Impedance Testing |
JYW6300 |
||
Dan Delta Testing |
JYC |
||
Oil Breakdown Voltage (BDV)Testing |
JY6611 |
||
Oil Tan Delta Testing |
GTD-61A |
||
Switchgear |
Circuit Breaker/Disconnector Resistance |
JYL-200B |
|
Relay |
Relay Performance |
JY7003G |
|
On-load |
On-load Switchgear Testing |
JYK-I |
|
Tap Changer Dynamic Testing |
JYK-I |
||
Instrument Transformer |
Current Transformer (CT)Testing |
JYH-C |
|
Potential Transformer (PT)Testing |
JYH-C |
||
Surge Arrestor |
Zinc Oxide Characteristics Testing |
JY6800 |
|
1mA DC Reference Voltage |
JYDHV |
||
Capacitor |
Capacitor Current |
JY6700 |
|
Capacitor Inductance |
JY6700 |
||
Ground Grid |
Grounding Down Lead Earth |
JYD |
Related Articles:
What Test Items are Required for 110kV/220kV Substation Acceptance and Maintenance Testing?
What Tests Must be Done before the Transformer Leaves the Factory?
Main Factors Affecting the Operating Life of Transformers
What is the Purpose of Measuring the DC Resistance of the Transformer Winding?
Points to note in transformer oil breakdown voltage (BDV) test
DC winding resistance tester with 500 times tests on a single charge -JYR9310