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You are here :
Home > Calibration
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Calibration
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ERDA is Accredited / Recognized by the following organizations. The list is only
typical, not exhaustive.
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National Accreditation Board for Testing & Calibration Laboratories (NABL) Govt.
of India
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Intertek (ASTA-BEAB) for Switchgear, Cables & Transformers
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Underwriters’ Laboratories (UL) for Certification Testing of Contactors, Pilot Lamps
and Pilot Switches
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TÜV Rheinland (India) Pvt.Ltd.,
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Certification after Recognition of Agent's Testing (CARAT), TÜV-PS Germany
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Dept. of Atomic Energy (DAE), Govt. of India for LOCA Qualification and Seismic
testing of electrical equipment
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Bureau of Indian Standards (BIS)
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Canadian Standards Association for LT Switchgear & Capacitors
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Dept. of Revenue, Ministry of Finance, Govt. of India
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Dept. of Scientific & Industrial Research (DSIR), Govt. of India
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Commissioner of Electricity, Govt. of Gujarat for Household Electrical Appliances
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Gujarat Electricity Regulatory Commission, Madhya Pradesh Electricity Regulatory
Commission and Rajasthan State Electricity Regulatory Commission for Energy Meters
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Calibration plays a major and vital role in any quality management system.
One of the important requirements in a quality system for any organization is a
valid calibration system for all measurements undertaken. ERDA’s standards
have traceability to NPL, New Delhi/ international standards. ERDA is recognized
by the National Accreditation Board for Testing and Calibration Laboratories, Govt.
of India.
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Following instruments / parameters can be calibrated:
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Parameter Instruments
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Range
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DC Current
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0-1000A
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AC Current
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0-1000A
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DC Voltage
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0-1050V
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AC Voltage
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0-1050V
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Resistance
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0-330 M Ω
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Power (UPF/LPF) (Active, Reactive, apparent)
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0-20A, 75 V /
1000A*, 1000V
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Power Factor
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0.1 lag/lead to Unity
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Frequency
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0.05-10MHz
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Insulation Resistance
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Up to 1TΩ, 5 kV
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Capacitance meters
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0.33 nF to 40mF,
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Resistance
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100 µ Ω - 1 T Ω
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Time
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1 mSec to 90000 Sec
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Universal Calibration System / Calibrators
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As per manual
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Oscilloscopes
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As per manual upto 250M.Hz.
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Transducers, Relay testing kits, Primary/Secondary injection kits, CB analysers/ELCB
testers, etc.
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Same as for V,I, Power,pf, frequency, temperature, time, etc..
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Energy Meters / Calibrators
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55 V – 290 V Direct current up to 120 A; 3 Ph-3-Wire / 3 Ph-4- Wire / 1 Ph-2-Wire
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High Voltage
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400 kV DC & 1000 kV AC
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Impulse measuring system*
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Up to 3000 kvp
(At ERDA as well as at site)
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Partial Discharge Detector*
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Multiple Ranges
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Partial Discharge Calibrator*
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Multiple Ranges
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Standard Capacitor*
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Multiple Ranges
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C – DF Calibrator*
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Multiple Ranges
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Capacitance & Tan-delta Bridge*
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Multiple Ranges
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Capacitive Voltage Divider*
(C1- C2 method)
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Multiple Ranges
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At ERDA, Vadodara
- Calibration of CT and VT Analyzers.
- Calibration of Standard Voltage Transformers up to 220kV Voltages and up to 0.05 accuracy class.
- Calibration of Current Transformers up to 8000A, up to 0.05 Accuracy class.
- Calibration of Turns Ratio Meter for 2 to 2000 Turns Ratio.
- Calibration of CTPT Bridge (AITTS).
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At Site and Mobile Facility. - Calibration of CT and VT Analyzers.
- Calibration of Standard Voltage Transformers up to 33kV Voltage and up to 0.05 Accuracy class.
- Calibration of Current Transformers up to 6300A, up to 0.05 Accuracy class.
- Calibration of Turns Ratio Meter for 2 to 300 Turns Ratio.
- Calibration of CTPT Bridge (AITTS).
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Items which can be calibrated
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Range
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Digital Vernier Caliper / Vernier Caliper
(L. C. 0.01 mm & 0.02 mm)
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0 - 300 mm
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Digital Micrometer / Micrometer
(L. C. 0.001 mm & 0.01 mm)
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0-25 mm
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Plunger Dial Gauge
(L. C. 0.001 mm & 0.01 mm)
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0-12.5 mm
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Verification of uniaxial testing machines, Dynamometer etc. at site (Accuracy
– 1% )
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Tension Mode - 100N to 200 kN;
Compression Mode - 100N to 500kN
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Load Cell calibration (At ERDA)*
(Accuracy – 1% )
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Tension Mode - 100N to 200 kN;
Compression Mode - 100N to 500kN
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Pressure Gauges*
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>10-700 kg/cm2 for accuracy ± 0.5% of FSD
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*These items are not covered under our scope of NABL accreditation for the present
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Temperature Simulation (Indicator/controller/scanner, etc.
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-250oC to 2500oC
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Temperature Measurement (Sensors, bath, etc.)
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-30oC to 1000oC
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Calibration of CT and VT Analyzers.
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Calibration of Standard Voltage Transformers up to 220kV Voltages and up to 0.05 accuracy class.
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Calibration of Current Transformers up to 8000A, up to 0.05 Accuracy class.
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Calibration of Turns Ratio Meter for 2 to 2000 Turns Ratio.
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Calibration of CTPT Bridge (AITTS).
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Calibration of CT and VT Analyzers.
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Calibration of Standard Voltage Transformers up to 33kV Voltage and up to 0.05 Accuracy class.
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Calibration of Current Transformers up to 6300A, up to 0.05 Accuracy class.
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Calibration of Turns Ratio Meter for 2 to 300 Turns Ratio.
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Calibration of CTPT Bridge (AITTS).
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Parameters
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Products
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Range
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Luminous Flux
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GLS Incandescent lamps
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190 lm – 3300 lm (25 W – 200 W)
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Compact Fluorescent Lamps
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200 lm – 2000 lm (5W to 26 W)
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High Pressure Sodium Vapour Lamp
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4800 lm – 50000 lm (70 W to 400 W)
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Metal Halide Lamp
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10000 lm – 50000 lm (150 W to 400 W)
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High Pressure Mercury Vapour Lamp
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2000 lm – 26000 lm (80 W to 400 W)
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Tubular Fluorescent Lamps
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900 lm – 3500 lm (14 W to 40 W)
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Colour coordinates
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-
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2700 K to 6500 K
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The testing of Energy Meters is done for both users and manufacturers. The
tests for mechanical, electrical and thermal properties are performed as per IS:13010-1990,
IS:13779-1993 and IS:14697-1999. Endurance, impulse, climatic, vibration and
ingress protection testing ensure the reliability of the energy meter.
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Sr.No.
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Product
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Standards
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1
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AC Induction Watt-hour Meters, Class 0.5, 1&2
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IS:13010
IEC:60521
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AC Static Watt-hour Meters Class 1&2
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IS:13779
IEC:61036
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AC Static Watt-hour meters Class 0.5 & 0.2
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IEC:60687
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AC Static Electrical Energy Meters (Trivectormeters)
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CBIP Publication No. 304
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Winding wires – enameled copper wires
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IS:4800, 13730, 13778
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Electromagnetic core (CRNGO)
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IS:648,649, 1018
IEC:60404-2
ASTM:A343,A717, A718
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Frame die Cast Aluminium
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IS:617
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Pinions – leaded brass/synthetic materials
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IS:319,4253,2221,882
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Counter frame – brass sheet
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IS:410
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Counter frame – Al sheet
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IS:2657
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Terminals – plated brass
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IS:410,168
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Gaskets synthetic rubber
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IS:4253
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Plastics
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IS:4253,2221,882
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Following products can be calibrated as well as Type tested at ERDA. Some
of the important products are:
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Sr.No.
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Product
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Standards
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1
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Current Transformer
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IS:2705
IEC:60044-1
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Potential Transformer
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IS:3156
IEC:60044-II
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Testing of analog measuring instruments (ammeters, voltmeters, wattmeters, varmeters,
frequency meters etc.
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IS:1248
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Testing of digital measuring instruments
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IS:13785
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Testing of insulation tester
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IS: 2292
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Transducer
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IEC: 60688
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Energy Meter
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IS: 13010/ IS:13779/ IS:14697
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Client Tale
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ERDA Video
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Reach Us
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Corporate Office
Laboratories
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