cpri-logo

Testing duration and Lead time

Name of the Equipment Testing Duration Laboratory Lead Time
Distribution Transformers as per IS 1180:2014 3 ½ days 1 week

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

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

Name of the Equipment Testing Duration Laboratory Lead Time
MCCB as per IEC 60947 20 days 1 week

Name of the Equipment Testing Duration Laboratory Lead Time
MCB as per IEC 60898 4 Months 1 week

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

NAME OF THE EQUIPMENT Testing Duration Laboratory Lead Time
Distribution / Power Transformers 1 ½ days 1 week

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

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

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

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

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

NAME OF THE EQUIPMENT Testing Duration Laboratory Lead Time
RIV and Corona test (Upto 800 kV rating) 1 day 1 week
Website Feedback Intranet Routemap Archives Power Links Sitemap Holiday Calendar Employee Corner Pensioners Working Hours FAQs Right-To-Information GST Number Employees List GrievanceWomen's Cell