Testing duration and Lead time
Central Research & Testing Laboratory (CRTL), Bengaluru
Distribution Transformers
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Distribution Transformers as per IS 1180:2014 | 3 ½ days | 1 week |
Current Transformers
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Current Transformers as per IEC 61869/ IS 16227 | ||
| Short Circuit test | 3 days | 1 week |
| Lightning Impulse / Power Frequency test | ½ day | 3 weeks |
| Temperature rise test | 2 days | 10 – 15 days |
| Cantilever Test (3 directions) | 1 day | 10 days |
| Partial Discharge test upto 66kV | 3 days | 1 week |
| Partial Discharge Test 132kV | 3 days | 3 weeks |
| Degree of Protection (IP) test | 2 days | 1 week |
Potential Transformers
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Potential Transformers as per IEC 61869 / IS 16227 | ||
| Short Circuit test (upto 33kV) | 3 days | 1 week |
| Lightning Impulse test | ½ day | 3 weeks |
| Cantilever Test (3 directions) | 1 day | 10 days |
MCCB
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| MCCB as per IEC 60947 | 20 days | 1 week |
MCB
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| MCB as per IEC 60898 | 4 Months | 1 week |
LV Assemblies
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Distribution Panel Board/Feeder Pillar as per IEC 61439 | ||
| Short Circuit and related tests | 5 days | 1 week |
| Temperature rise test | 3 – 6 days | 15 – 20 days |
| Degree of Protection (IP) test | 2 days | 1 week |
| Resistance to Corrosion Test (Severity A), Resistance to UV radiation | 29 days | 1 month |
Power Transformers
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Power Transformers | ||
| Short Circuit test | 3 days | 1 week |
| Lightning Impulse test, Separate source Voltage Withstand Test (upto 100MVA, 220kV) | 1 day | 3 weeks |
Power Cables
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Type test on 1.1kV PVC/XLPE Cables | 25 – 30 days | 1 week |
| Type test on 11 kV to 33 kV Cables | 30 days | 3 weeks |
| Type test on 66 kV to 220 kV Cable system | 40 to 50 days after completion of installation of accessories | 2 months |
Energymeters
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Electro-mechanical meters (Type test) | 45 days | 1 week |
| Static Energymeters (Type test) | 45 days | 1 week |
| Prepayment Meters (Type test) | 60 days | 1 week |
| Smart Meters (Type test) | 60 days | 1 week |
| Protocol testing of IEDs | 15 days | 1 week |
| Calibration of Reference Standards | 1 – 7 days (depends on no. of calibration points) | 15 days |
LED / Solar Inverters
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Inverter testing as per IS/ IEC 61683: 1999 | 7 days | 1 week |
| Inverter testing as per IS 16169/ IEC 62116 | 14 days | 1 week |
| Inverter testing as per IS 16221-1 &-2/ IEC 62109-1 & 2 | 45 days | 1 month |
| LED/ Inverter testing as per IEC 60068-2 (1,2,14,30) | 21 days | 1 week |
| Inverter testing as per IS 13314: 1992 | 7 days | 1 week |
| Inverter/ LED testing as per IS 14700-4-5/ IEC 61000-4-5 | 8 days | 1 week |
| Inverter/ LED testing as per IS 14700-3-2/ IEC 61000-3-2 | 4 days | 1 week |
| Inverter/ LED testing as per IS 14700-3-3/ IEC 61000-3-3 | 3 days | 1 week |
| Pump controller/VFD/ inverter testing as per IS 17018 | 5 days | 1 week |
| LED testing as per IS 16102-1 & 2 | 45-250 days | 1 week |
| LED testing as per IS 16106/ LM 79-08 | 5 days | 1 week |
| LED testing as per MNRE specification | 28 days | 1 week |
| Solar PV module testing as per IS 12762-1 / IEC 60904-1 | 7 days | 1 week |
Insulators
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Electrical tests on Porcelain disc insulators (three samples) | ||
| • Lightning impulse withstand | 3 days | 3 weeks |
| • Lightning impulse flashover | 3 days | 3 weeks |
| • Power frequency withstand, flashover dry/wet | 3 days | 3 weeks |
| • Temperature cycle | 3 days | 3 weeks |
| • Mechanical failing load | 3 days | 3 weeks |
| • Twenty four hours mechanical | 3 days | 3 weeks |
| • Puncture | 3 days | 3 weeks |
| • Porosity | 3 days | 3 weeks |
| • Galvanizing test | 3 days | 3 weeks |
| Design test for Polymer Insulators (three samples) | 8 days | 3 weeks |
| Steep Front wave test on Porcelain Insulators (ten insulators) | 2 days | 3 weeks |
| Mechanical Tests | ||
| • Cantilever test (3 directions) | 23 days | 10 days |
| • Assembled Core Load test | 23 days | 10 days |
| • Damage Limit proof test | 23 days | 10 days |
| • Brittle fracture resistance test | 23 days | 10 days |
| • Torsion test | 23 days | 10 days |
| • Tensile/compression test | 23 days | 10 days |
Insulator Strings
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| 132/220kV Strings | ||
| • Lightning impulse withstand, flashover | 2 days | 3 weeks |
| • Switching impulse withstand | 2 days | 3 weeks |
| • Power frequency dry withstand/flashover | 2 days | 3 weeks |
| • Power frequency wet withstand/flashover | 2 days | 3 weeks |
| • Voltage distribution | 2 days | 3 weeks |
| • R.I.V and Corona test | 2 days | 3 weeks |
| 400kV Strings | ||
| • Lightning impulse withstand, flashover | 2 days | 3 weeks |
| • Switching impulse withstand | 2 days | 3 weeks |
| • Power frequency dry withstand/flashover | 2 days | 3 weeks |
| • Power frequency wet withstand/flashover | 2 days | 3 weeks |
| • Voltage distribution | 2 days | 3 weeks |
| • R.I.V and Corona test | 2 days | 3 weeks |
| Mechanical Test | ||
| • All types of Fatigue/Vibration test (upto Quad conductors) | 10 days | 10 days |
| • All types of Fatigue/Vibration test (six bundle conductors and above) | >10 days | 10 days |
| • ‘ I ‘- String | 10 days | |
| Single/Double (Composite) | 1 day | 10 days |
| Single/Double (Porcelain) | 1 ½ days | 10 days |
| • ‘ V ‘- String | 10 days | |
| Single/Double (Composite) | 1 ½ days | 10 days |
| Single/Double (Porcelain) | 2 days | 10 days |
| • Tension String | 10 days | |
| Single/Double (Composite) | 1 day | 10 days |
| Quad (Composite) | 2 days | 10 days |
| Single/Double (Porcelain) | 1 ½ days | 10 days |
| Quad (Porcelain) | 2 ½ days | 10 days |
Overhead Conductors
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Type Test | 1 day | 10 days |
| UTS/DCR Test | 1 day | 10 days |
| Stress Strain test | 1 day | 10 days |
| RIV and Corona Test | ½ day | 10 days |
Lightning Arresters
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Electrical Test as per IEC 60099-4 Ed 3.0 | ||
| • Residual voltage test | 50 days | 3 weeks |
| • Test to verify long term stability under continuous operating voltage | 50 days | 3 weeks |
| • Test to verify the repetitive charge transfer rating, Qrs | 50 days | 3 weeks |
| • Heat dissipation behavior of test sample | 50 days | 3 weeks |
| Electrical Test as per IEC 60099-4 Ed 2.2 | ||
| • Residual voltage test | 51 days | 3 weeks |
| • Test to verify long term stability under continuous operating voltage | 51 days | 3 weeks |
| • Test to verify the repetitive charge transfer rating, Qrs | 51 days | 3 weeks |
| • Heat dissipation behavior of test sample | 51 days | 3 weeks |
| Low Current Short Circuit Test | ½ day | 1 week |
| Partial Discharge Test | ||
| • Upto 132kV | 2 days | 1 week |
| • Above 132kV | 2 days | 3 weeks |
| Mechanical Test | ||
| • Mean Breaking load test (cantilever test only) | 2 days | 10 days |
| • Specified short-term load test (cantilever test only) | 2 days | 10 days |
Hardware Items (Cable, Anchoring/Suspension clamps, Piercing Connectors)
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Mechanical Test | 1 day | 10 days |
| Tensile Test / Compression / Bending Strength on metallic material / other hardware items tested on UTM | 2 to 4 hours (depends on sample size) | 10 days |
| Voltage test | 1 day | 1 month |
| Corrosion test | 56 days | 1 month |
| Climatic ageing test | 44 days | 1 month |
Transmission Line Towers
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Prototype Tower Testing | ||
| a) S/C or D/C Towers [Including ground assembly & dis-assembly of towers] | 3 months | |
| • Weight Up to 5t | 4 days | 3 months |
| • Weight Between 5t-10t | 5 days | 3 months |
| • Weight Between 10t-15t | 6 days | 3 months |
| • Weight Between 15t-20t | 7 days | 3 months |
| • Weight Between 20t-25t | 9 days | 3 months |
| • Weight More than 25t | 1 day for every additional 4t | 3 months |
| b) Multi circuit towers | Additional 1.5 to 2 days for respective Weight category | 3 months |
| c) Test on Tower members | ||
| • Tensile Test | 2 to 4 hours | 3 days after Tower test |
Capacitors
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| LT Power Capacitors | ||
| a) Self-healing type as per IS 13340/IEC 60831 – Routine, Type and Ageing test for 1500 hrs | 80 days | 2 weeks |
| b) Non Self-healing type as per IS 13585/IEC 60931 – Routine, Type and Ageing test for 1500 hrs | 80 days | 2 weeks |
| AC Motor Capacitors as per IS 2993/IEC 60252 - Routine, Type and Endurance test for 1500 hrs | 80 days | 2 weeks |
| HT Shunt Power Capacitors as per IS 13925/IEC 60871 - Routine, Type and Endurance-Ageing test for 1000 hrs | 70 days | 2 weeks |
| HT Series Capacitors as per IS 9835/IEC 60143 - Routine, Type and Ageing test for 1000 hrs | 70 days | 2 weeks |
Switchgear Testing & Development Station (STDS), Bhopal
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Distribution Transformer - Up to 630kVA, 11 kV/ 0.433 kV (Station 2) | 1 day | 1 month |
| Distribution Transformer (STL) | 2 days | 3 weeks |
| Cable (Station 2) | 1 day | 1 month |
| LV Panels (Station 2) | 2 days | 1 month |
| LV Panels (STL) | 15 days | 3 weeks |
| MCB (Station 2) | 2 days | 1 month |
| ACB/ MCCB (Station 2) | 1 day | 1 month |
| CT (Station 2) | 1 day | 1 month |
| Isolator, Disconnector, Earth Switches, AB Switch and GO Switches (Station 2) | 1 day | 1 month |
| On Load Tap Changer (Station 2) | 15-40 days | 1 month |
| Lightning Arresters (Station-1) | 2 days | 15 days |
| Energymeters | ||
| • Direct connected Energy meters | 60 days | 50 days |
| • Transformer connected Energy meters | 90 days | 50 days |
| • Smart Energy Meters | 100 days | 50 days |
Ultra High Voltage Research Laboratory (UHVRL), Hyderabad
Insulator strings, Insulators and other similar equipment
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Upto 132 kV rating | 6 days | 1 week |
| Upto 400 kV rating | 6 days | 1 week |
| Upto 765 kV rating | 6 ½ days | 1 week |
Bushings
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Upto 132 kV rating | 5 days | 1 week |
| Upto 400 kV rating | 5 days | 1 week |
| Upto 765 kV rating | 5 ½ days | 1 week |
Distribution / Power Transformers
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Distribution / Power Transformers | 1 ½ days | 1 week |
Conductors / Conductor Accessories, Power Connectors
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| RIV and Corona Test (upto 765kV rating) | 1 day | 1 week |
Current Transformers
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Upto 132 kV rating | 8 ½ days | 1 week |
| Upto 400 kV rating | 9 days | 1 week |
| Upto 765 kV rating | 9 days | 1 week |
Inductive Voltage Transformers
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Upto 132 kV rating | 6 ½ days | 1 week |
| Upto 400 kV rating | 7 days | 1 week |
| Upto 765 kV rating | 8 days | 1 week |
Capacitive Voltage Transformers
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Upto 132 kV rating | 8 ½ days | 1 week |
| Upto 400 kV rating | 9 days | 1 week |
| Upto 765 kV rating | 9 days | 1 week |
Switchgears (Disconnectors, Circuit Breakers, GIS, AB Switches)
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Upto 132 kV rating | 4 days | 1 week |
| Upto 400 kV rating | 5 days | 1 week |
| Upto 765 kV rating | 5 days | 1 week |
Insulator strings, Insulators for HVDC applications
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| Upto 320 kV rating | 4 ½ days | 1 week |
| Upto 500 kV rating | 4 days | 1 week |
| Upto 800 kV rating | 4 ½ days | 1 week |
Conductors / Conductor Accessories for HVDC applications
| Name of the Equipment | Testing Duration | Laboratory Lead Time |
|---|---|---|
| RIV and Corona test (Upto 800 kV rating) | 1 day | 1 week |