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Electro Technical Calibration
 

Standards and Instruments Used :
Fluke Multifunction Calibrator 9100 as a source, 3 Phase Power / Energy Standard Source, Fluke  6½ Digit Digital Multimeter, Fluke High Voltage Calibration System and Power Analyzer as a measuring instruments.

Source Parameters :
DC Current, AC Current, DC Voltage, AC Voltage, Resistance, Capacitance, Frequency, Power Factor, Power at various power factors, Energy at various power factors, Temperature, RPM Measurement, Time Interval.

Instruments Which Can Be Calibrated :
Energy Std./Meters, Power Analyzer, Process calibrator, Multimeter up to 51/2 digit, Clamp   meter, LCR Meter, Power Factor Meter, AC/DC Voltmeter, AC/DC Ammeter, Frequency Meter, Ohms Meter, I.R Tester, Temperature Indicators, Tachometer, Timer/Stop Watch etc.

Measurement Parameters :
AC / DC Voltage, AC / DC High Voltages, DC Current, AC Current (AT 10 HZ TO 10 KHZ   Frequency), Resistance, Capacitance, Temperatures,  Power Factor, AC Power, CT Ratio & Phase Error, Time Interval,  Frequency.

Instruments For Calibration :
AC/DC High Voltage Tester, AC/DC Power Supply, Reference Ballast, Standard Resistance/ Capacitance Box, Wheatstone Bridge/Kelvin Bridge, CT Etc.




Scope of Electro Techincal Calibration


S. No.

Parameters

Ranges
CMC*%

Method

Standard Instrument Used
   
1.
AC Voltage
(10 Hz to 5 KHz)
(05 KHz to 100 KHz)
10 mV to 1000V
30 mV to 100 V
4.5
4.5
0.2
0.6
Direct
Fluke Multifunction Calibrator
2.
DC Voltage 1 mV to 1000 V
0.7
0.01
"do"
****Do****
3.
DC Current 10µA to 1000 A
0.035
0.46
"do"
Fluke Multifunction Calibrator
4.

AC Current (50 Hz to 1KHz)
(AT 50 Hz)

10µA to 20A

 20 A to 1000 A
4.1

0.7
0.25

0.30
"do"  
****Do**** &
Using Calmet power /energy calibrator
5.

Resistance
(2 W)


Low resistance(4W)

3Ω to 300 MΩ 

 0.1m ohm to 2 ohm   

0.46


0.85
0.07
 
 
0.31
"do"

Fluke Multifunction Calibrator

Osaw standard resistance

6.
Capacitance
(1kHz)
1 nF to 10 mF
2
0.55
"do"
Fluke multifunction calibrator
7.
Frequency 1Hz to 1MHz
0.6
0.003
"do"
****Do****
8.

High Resistance

(I.R. OPTION)

1 MΩ to 1.8 GΩ

(At 250 V to 1kV)

0.2
1.1
"do"
****Do****
9.
Power Factor 0.1 PF to UPF
0.002
0.001
"do"

****Do****
10.
(a) AC Power (0.5 PF to 0.8 PF) lag to lead
UPF
0.5 Lag to 0.8 lead
0.8 Lag to 0.8 lead
(b)DC Power
(c)3 Phase Power

0.5W to 12 kW
1W to 12kW

0.5W to 6.0kW

0.8W to 9.6kW

3W to 33.6kW

0.06
0.06
0.08
 
6.3
0.08
 
 
 
1.5
0.65
0.6
0.065
 
0.09
0.65
 
 
 
1.5
"do"
 
****Do****
11.
AC Energy
Single & Three Phase
UPF to 0.25PF lead/lag

0.05 to 120 A

0.5wh to 57600wh

0.06
 
0.68
0.07
 
0.06
"do"
3 Phase Power / Energy Standard Source
12.
Temperature indicator, controller,recorder
(by simulation method)
RTD,
J & K type T.C.
-200ºC to 800ºC
-200 ºC to 1300ºC
0.2 0.3
-
-
Simulation
Fluke Multifunction Calibrator
 
   
 
 
 
 
 
   
 
 
 
 
* CMC claimed at best measurement point
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
Measurement Parameters :
 
 
 
 
 
   
 
 
 
 
S. No.

Parameters

Ranges
CMC*%

Method

Standard Instrument
 
 
1.
DC Voltage 0.1 mV to 1000 V
3.9
0.004
Direct
Fluke 8846, 6½ DMM
2.
DC High Voltage 1 kV to 20 kV
2.3
2.3
"do"
HV Probe , DMM  (Make-fluke)
3.

AC Voltage
1.(50 Hz to 10 kHz)
2. (50kHz to 100kHz)

1 mV to 1000V

10mVto 100V

4.7
 
6
0.1
 
0.8
"do"
Fluke 8846
4.
AC High Voltage  (50 Hz) 1Kv to 15 kV
2.3
2.3
"do"
HV Probe, DMM
5.
DC Current 1µA to 10 A
2.5
0.065
"do"
Fluke 8846
6.

AC Current
1. (50 Hz  to 1 kHz)
2. (1 kHz to 10kHz)

10µA to 10 A
100mA to 1A
0.85
0.65
0.16
1.5
"do"
Fluke 8846
7.
Resistance 0.1 Ω - 1G Ω
3.6
0.013
"do"
Fluke 8846
 
   
 
 
 
 
8.
Temperature simulation (RTD, J & K thermocouple -200ºC to 600ºC
-200°C to 1300°C
0.2°C
0.55°C
0.2°C
0.55°C
"do"
Cropico digital thermometer
9.
Power Factor(at 50Hz) 0.1 to UPF
0.007 PF
0.007 PF
"do"
Digital power meter/Harmonic analyser
10.
Frequency 10 Hz to 1 MHz
0.11
0.011
"do"
Fluke 8846
11.
Time Interval 0.1 s to 999.99 s
0.001
1.13
Comparison
Time Interval Meter
12.
AC Power(Single phase) 1 W to 12 kW
0.9
0.9
Direct
Digital Power Meter
13.
Harmonics 2nd to 41st
0.42
0.42
"do"
Power meter
* CMC claimed at best measurement point
     
 
 
 
 

 

 
 
     
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