Testing duration and Lead time

CPRI Bangalore

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
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) 3 days 3 weeks
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 23 days 10 days
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 2 days 3 weeks
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 2 days 3 weeks
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 10 days
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
400kV Strings 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 50 days 3 weeks
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 51 days 3 weeks
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
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 2 days 10 days
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 3 weeks
Corrosion test 56 days 3 weeks
Climatic ageing test 44 days 3 weeks

Transmission Line Towers

Name of the Equipment Testing Duration Laboratory Lead Time
Prototype Tower Testing
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 Between10t-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
Multi circuit towers Additional 1.5 to 2 days for respective Weight category 3 months
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
Self-healing type as per IS 13340/IEC 60831 – Routine, Type and Ageing test for 1500 hrs 80 days 2 weeks
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 60252ÂÂ - Routine, Type and Endurance testÂÂ 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

Swichgear Testing & Development Station,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

UHV Research Laboratory,CPRI,Hyderabad

Insulator strings, Insulators and other similar equipment

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

Bushings

Name of the Equipment Testing Duration Laboratory Lead Time
Upto 132 kV rating 5 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 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