Intoduction of Testing Group
Rajendra Ghule (Lead – Testing & Commissioning Group)
Electrical engineer having 21 years of experience in the electrical field, and 14 years of experience in testing for domestic as well as foreign projects. Experience varies in various types of Industries with all type of electrical protections with new age Numerical Relays. Worked with SIEMENS-India for 14 years, Qatari German Switchgear Co. Qatar (Having collaboration with SIEMENS AG) for almost 3 years.
Extending area of service under the roof of Excel Tech Group we have established our own Testing Team to cater customers promptly and effectively from 2013. We are carrying all type of testing & commissioning activities for the projects. Also, we will be providing testing support for during routine maintenance and shutdowns jobs.
With this short tenure, we have raised total strength to 24 engineers with mix knowledge skills and experience. We have multiple sets of test equipment's to provide services simultaneously all over India.
Service Area
We are extending our services across all type of industry in power system like Oil & Gas Refinery, power plants, chemical industry, cement, fertilizers etc.
Our experienced engineers can execute customer plan with their excellent commissioning skills in all type projects. We provide services in the testing of following electrical equipment's/ systems.
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Generator Testing (upto 250MW)
Transformers (upto 320MVA)
LV/ MV Busducts (SPBD & IPBD)
LV Boards PMCC/MCC/DB's
MV indoor Boards rating 3.3kV to 33 kV
G.I.S. Upto 33kV
Outdoor Switchyard Upto 220kV
Cables Upto 220kV.png)
LV/ MV Motors (upto 13.5MW)
Relay Panels
UPS
Battery Chargers
Listing Pre-commissioning Tests
Relays
Conventional and Numerical Protection Relay Testing consists of following protections–
- 51/50-Phase over current IDMT/DMT
- 51N/50N-Earth over current IDMT/DMT
- 87-Differential Protection
- 67-Directional over current
- 21-Distance Protection
- 27/59-Under/Over Voltage
- 25-Synchronisation
- 37-Undercurrent
- 46-Negative Sequence
- 49-Thermal Overload
- Generator Protections
Secondary injection Kit
Breakers
Contact resistance
Time interval meter
Various tests like :-
IR test in all conditions, resistance of coils & motor, contact resistance, timing(c/o), HV test on HT breakers.
Current Transformer /Protection Transformer Testing:
Primary current inj. Kit
TKnee point kit
IR test, winding resistance test, polarity test(upto relay end), ratio test(curent ratio for CT's / voltage ratio for PT's) & knee point test on PS class CT's.
Relays
Testing of protection relays along with aux. relays like Master Trip/ Trip Circuit Supervision Testing of transducers and meters
Secondary injection Kit
Secondary injection Kit
Secondary injection Kit
Transformer Testing
Transformer –
P.I./Ratio Test/Winding Resistance Test/ Magnetising current/ Vector Group/ IR Test/ Reduced Voltage short circuit test/Tan-Delta test. Stability for Transformer differential and REF schemes.
Transformer winding resistance meter
Various Tests
Other various test like
- Motor: IR test, W.R. Test, simulation from panel & LSC. & Tandelta of HT motors
- Generators: IR test, winding resistance of stator,IR test/winding resistance of rotor. & Tandelta test
- Contact resistance: LV/HV busduct & bus of boards.
- IR test & HV test of boards & busducts.
- Validations of energy meters & boards.
- 220kv cable HV test for post laying outer sheth healthiness check
- Integrated tests of all LV/MV boards comprising operations as per scheme. 2 out of 3 scheme of incommer & bus coppler. Tripping co-ordinations with up & down stream.
HV Tester's
DC HI-POT tester
AC HI-POT tester
Tan-delta Test
Tandelta testing kit
Tan delta unit : Ratings
- I/p voltage: 220V AC
- Interfacing current: 0-100MA
- Power: 0-(+/-)2kw
- Capacitance: 0.06mf
- Df Range: 0–infinity
- O/P volatage: 0-12kv
Add on acessories: Comensating reactors
- 1 nos * 1.0mf + 2.0 mf
- 2 nos * 2.0mf + 2.0 mf
Interface:- rs 232 serial interface to pc for full control usb printer
Instruments
| Name of kit | Qty we have |
| Time interval scott timer | 04 |
| CRM 100B contact resistance | 04 |
| TRM 104 txresistance | 02 |
| ISA T1000 (italy make) SIK | 01 |
| Tandelta kit with compensator reactor for ht motors | 01 |
| Secondary injection kit 1phase | 02 |
| Secondary injection kit 3phase | 02 |
| DC HV tester 80/5 & 60/5 (udey) | 02 |
| AC HV tester 70-50 (udey) | 01 |
| Omicron CMC 356 | 01 |
| Digital MM fluke 101/115 | 57 |
| Winding resistance meter | 14 |
| Kyoritsu clamp meter 2002R/PA, fluke | 17 |
| Kyoritsu leakage tester 2434 | 17 |
| LV insulation tester (fluke, rishabh) | 29 |
| HV insulation tester ( fluke, megger, kyoritsu, rishabh) | 17 |
| Dew point tester | 02 |
| Temperature gun (fluke) | 14 |
| Transformer testing setup kit | 08 |
| DC power pack | 07 |
| ELCB tester (km) | 04 |
| Torque wrench (torqmaster,eastman) | 17 |
| Laptop with relay interface communication cables/converters | 07 |
| Earth resistance meter | 14 |
Major Projects
| Sr no | Dscription of job | Year | Site |
| 1 | Revalidation & testing of distribution board qty 3800 of various ratings in 120 days | 2013 | M/s Reliance Jamnagar |
| 2 | Gagva water works. Testing & commissioning of siemens new age nx-air board of 11kv | 2013-14 | M/s Reliance Jamnagar |
| 3 | LT panels testing (DTA coker pre-heater) | 2013-14 | M/s Reliance Jamnagar |
| 4 | E.T.C. of 1 no. 220kv switch yard bay, at Theba s/s | 2013-14 | M/s Reliance Jamnagar |
| 5 | Testing & commissioning of construction power networks at various sites. | 2014-15 | M/s Reliance Jamnagar |
| 6 | Testing & commissioning of 2 * 250 MW power plant. | 2014-15 | GSECL Sikka |
| 7 | Testing of power transformers 174 MVA | 2014-16 | Siemens |
| 8 | Testing of DTA CPP power hub j.m.d. | 2015-16 | M/s Reliance Jamnagar |
| 9 | Complet package of testing at SEZ refinary (MED plant, TTP plant, HNUU area, A20 area) | 2015-16 | M/s Reliance Jamnagar |
| 10 | Testing & commissioning of 2 * 800 MW ash plant, BHEL RPCL qty all electrical system | 2016 | Yerramarus, karnataka |
| 11 | Erection-testing & commissioning of 33kv GIS panel qty 72 panels | 2016 | Siemens |
| 12 | Revalidation of HT panels. Qty 360 panels | 2016-17 | Schneider |
| 13 | Testing of HT panels | 2017 | Schneider |
| 14 | Testing & commissioning of LDPE plant, RIL Jam qty 400 panels and 20 transformers | 2016-17 | M/s Reliance Jamnagar |
| 15 | Revalidation testing and commissioning of 11/33kv panels (AREVA) at EBTSL | 2017 | Essar, Jamnagar |
| and many many more… | |||
Goal
Excel Tech Group has established a team of 24 professionals in the field of testing and commissioning group with different competency. We have picked out 10 competent professional out of around 150 strength from our maintenance group having skill in handling MV and LV panel issues arises during operation of the process industry.
We have well-equipped training center at our workshop for training new GET’s. with regular seminars, training session, and presentations.
Our Goal is to reach the international market with,
Continual Improvement
Trustworthy Service
Highest Quality with Safety
