As part of the Field Quality Control as per specification clause, testing and commissioning of the ATS Panel will be carried out as per the enclosed Method Statement under the direct supervision of factory authorized service representative.
SYSTEM COMPONENTS
ATS Panel – covered under this method statement
TECHNICAL SPECIFICATION :
TEST EQUIPMENT EMPLOYED :
a) Insulation Megger (With Valid Calibration Certificate)
b) Digital Multimeter (With Valid Calibration Certificate)
c) High Voltage Test Set (With Valid Calibration Certificate)
VISUAL AND MECHANICAL/ELECTRICAL INSPECTION:
- Compare equipment nameplate with drawings and specification.
- Inspect physical and mechanical conditions.
- Confirm components are as per drawings.
- Check-up the mechanical on/off operation of all breakers.
- Check the spring charging mechanism operations for MCCB.
- Check-up the other additional /parallel operating controls for breakers.
- Connect the control supply at the correct terminal and polarity.
- Check the on/off operation of MCCB (in ATS circuit) electrically.
- Observe external status indication lamp for operation of breakers.
- Check the spring charging motor operation MCCB.
- Check the manual operation of MCCB through the extended rotary handle or directly at the MCCB.
- Check the operation of control circuits as per the drawing.
- Check all the interlocks and selections as per schematic.
ELECTRICAL TESTS
Insulation Resistance Test
Before starting the tests, the testing area to be identified by surrounding rope/chain so that except testing personnel, nobody else can have access to the panel till completion of all test.
Using 2Kv megger the insulation resistance between
| Phase to Phase | |
| Phase to Neutral | } To be tested for Power Circuit |
| Phase to Ground | |
| Neutral to Ground |
The maximum insulation resistance should be 0.2 Mega Ohm.
Using 500V megger the insulation resistance between
| Phase to Phase | |
| Phase to Ground | } To be tested for Power Circuit |
| Neutral to Ground |
The minimum insulation resistance value should be 0.1 Mega Ohm.
Dielectric Test
Before starting the test identity, the area for safety purpose as per earliest test. Disconnect the cables connected to electronic components like U/V relays etc.
Using high voltage test equipment 2.5 Kv -to be applied between:
| Phase to Phase | |
| Phase to Neutral | } for 1 minute |
| Phase to Ground | |
| Neutral to Ground |
The test withstand capacity to be observed.
MANUFACTURER’S RECOMMENDATIONS:
Manufacturer’s recommendations for testing and commissioning is herewith enclosed.
REPORTS
A written report shall be furnished to certify the works as recorded on the form attached to this document.
SAFETY
Only competent personnel will be carrying out the tests, and only authorized personnel will be present at the testing area.
TRAINING
Will be provided as per training schedule under the contract conditions, before handing over to the owner.
WORK DURATION
The procedure should not require more than 2 hours.
Inspection Checklist:
| A. VISUAL MECHANICAL INSPECTION : | |
| 1 | Compare equipment nameplate with drawings and specification. |
| 2 | Inspect physical and mechanical conditions. |
| 3 | Confirm components are as per drawings |
| 4 | Check-up the mechanical on/off operation of all breakers. |
| 5 | Check the spring charging mechanism operations for MCCB. |
| 6 | Check-up the other additional /parallel operating controls for breakers. |
| 7 | Connect the control supply at the correct terminal and polarity. |
| 8 | Check the on/off operation of MCCB (in ATS circuit) electrically. |
| 9 | Observe external status indication lamp for operation of breakers. |
| 10 | Check the spring charging motor operation MCCB. |
| 11 | Check the manual operation of MCCB through the extended rotary handle |
| 12 | Check the operation of control circuits as per the drawing. |
| 13 | Check all the interlocks and selections as per schematic |
| B. INSULATION RESISTANCE TEST : | |||||
| IR BETWEEN | INSULATION RESISTANCE VALUE M-Ohm | ||||
| R-Y | |||||
| Y-B | |||||
| B-R | |||||
| R-E | |||||
| Y-E | |||||
| B-E | |||||
| N-E | |||||
| C. DIELECTRIC TEST : | |||||
| DIELECTRIC TEST BETWEEN | LEAKAGE CURRENT VALUE Micro-Amps | ||||
| R-Y | |||||
| Y-B | |||||
| B-R | |||||
| R-E | |||||
| Y-E | |||||
| B-E | |||||
| N-E | |||||