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Testing and Measuring Instruments
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Testing and Measuring Instruments
 
Application
Impulse testing of electrical and electronic equipment such as transformer, energy meter, switchgear etc.
 
Specification
  • Input supply    :   230VAC, 50 Hz.
  • Output voltage peak    :   0 to 6 kV
  • Open circuit waveform characteristic (equivalent load of 10 k Ohm):
  • Front time   :   1.2 micro seconds ± 30%
  • Tail time     :    50 microseconds ± 20%
  • Short circuit characteristics (impedance 0.1 Ohm):
  • Front time    :  8 microseconds ± 20%
  • Effective output impedance    :   2 Ohm  
Salient Features
  • Compact design
  • Fully safe operation due to protected panel
  • Positive and negative polarity pulse selection
  • Variable output range from 0 to 6 kV.
  • Solenoid operated sphere gap trigger arrangement.
  • Charging voltage display by digital kV meter.
  • Oscilloscope output is provided to see the wave shape.
  • Charging capacitor discharge facility provided inside after operation.
  • Charging supply isolation just before operation of sphere gap.   
    Cost per Unit: Approximately Rs. 1,35,000/-
Application
Useful in type testing of RCCB as per IS:12460(Part-1)-2000 specification
 
Specification
  • As per requirements of IS: 12640 (Part 1) - 2000
  • 0.5 µ sec / 100 kHz ring wave
  • Peak value: 200 A ± 10%
  • Virtual front time: 0.5 µ sec ± 30%
  • Period of the following oscillatory wave = 10  µ s ± 20%
  • Each successive peak: about 60% of the preceding peak
Salient Features
  • Indigenously developed
  • Not manufactured in India
  • Meets the requirements of IS: 12460 (Part-1) – 2000  
     Cost: Approx. Rs. 75000/- per unit
Application
Test equipment is required testing of energy meter 
 
Specification
  • Maximum current  : 3000A AC rms, half cycle
  • Current control      : Through Variac and Voltage display
  • Standard applicable: IS :13779, CBIP report  88 for direct connected  meters 
Salient Features
  •  Reliable electronic control to avoid successive multiple triggering
  • Guaranteed half cycle
  • Push button control for trigger and reset special features 
    Cost per Unit: Approx. Rs. 1,35,000/- lakh
Application
In the testing of energy meter as per IS:13779-1999 
 
Specification
  • Eight 7-segment displays for displaying different tests
  •  Feathers touch keypad to program the system in different 3 tests
  • Minimum sampling interval of 20 milliseconds for SYNC operation
  • Multi-level LED indication for different test
  •  A RS-232 port for remote operation
  • PC based software through which whole system can be operated from remote PC
  • The format of test display is T.E.S.T-1
  • Operating voltage for the system is 230 VAC
  • Input signal voltage (output of instrument) 230/ 110 VAC single/ three phase
Salient Features
  • All three tests can be performed on a single set up
  • Serial communication provided
  • PC software stores the test details with date and time
    Cost per Unit: Approximately Rs 50,000/-
Application
To conduct glow wire test on insulating materials used in LT Switchgear, Energy meters, Appliances, Wiring accessories etc. 
 
Specification
  • Apparatus conforms to IS: 11000 (Pt. 2/Sec.1)-1984/ IEC 60695-2-10:2000
  • Glow wire loop: Nickel – Chromium (80 / 20)
  • Thermo Couple: Type K, Sheathed 0.5 mm outer diameter
  • Temperature Range: 550 ºC ± 10 ºC, 650 ºC ± 10 ºC, 750 ºC ± 10 ºC, 850 ºC ± 10 ºC, 960 ºC ± 10 ºC
  • Accuracy:  ± 0.5 % 
Salient Features
  •  Indigenously developed
  • Meets all requirements specified in IS: 11000 – 1984
    Part 2 / Sec 1)/ IEC 60695-2-10:2000
    Cost:  Approx. Rs. 90,000/- per unit
Application
In lamps and luminaire industries to determine mean effective life of lamps 
 
Specification
  • Input signal :- 10 V to 270 V AC
  • Range :- 0 to 99999.9999
  • Supply voltage :- 180 V to 270 V
  • Humidity :- 95 % rh°
  • Operating Temperature :- 0 – 70 °C
  • Accuracy class :- 0.1 % 
Salient Features
  • Micro controller based system
  • Liquid Crystal Display : (4 – digit after decimal point)
  •  Memory capacity for more than one month
  • Reset facility
    Cost:  Approx. Rs. 10000/- per unit  
Application
To conduct short circuit test on MCBs, Transformer & LT Switchgear products at controlled switching 
 
Specification
  • Setting of angle from 0 to 360 degree in one degree resolution
  • Accuracy 0.5º
  • Synchronization signal voltage: 230/110 Volt ac, works upto 10% of input voltage
  • Sampling interval : 20 milli seconds
  • Operating voltage for the system: 230 Volt ± 10 % ac 
Salient Features
  • Eight 7-segment displays for displaying DEGREE and operating MODE
  • Feather touch keypad to program the Unit in different modes and setting the points on wave switching angle in degree
  • LED Indication for Trigger Pulse, Sync Pulse, Firing Angle
  • The format of MODE as LOC (LOCAL) or RE (REMOTE) 
    Cost:  Approx. Rs. 50000/- per unit 
Application
Field study of Harmonics, Waveform Analyzer, Oscilloscope 
 
Specification
  • Input voltage range   :  0 – 1000 V
  • Step down ratio        : 40 & 200
  • Input impedance       : 1 MW
  • Operating voltage for the system: 230 volt +/- 10 % AC 
Salient Features
  • Ground is isolated
  • Output of the differential module is floating and can be directly connected to C.R.O. 
    Cost:  Approx. Rs. 15000/- per unit
Application
For testing of Energy meters, electrical transducers as per IEC : 61000 – 4-12  
 
Specification
  •  Input Voltage: 230 V ac, 50 Hz
  • Output voltage peak: 4-15 kV peak
  • Open current wave form characteristic (equivalent, greater or equal to 10 K ohm)

Front Time   : 1.2 µs ± 30%,
                              Tail Time     : 50 µs ± 20%

  • Short circuit waveform characteristics (Load smaller or equal to 0.1 ohm) Front Time   : 8 µs ± 20%,
                  Tail Time     : 20 µs ± 20%
  • Effective out put impedance: 2 Ohms
  • Phase shifting: 0 to 360º
  • Impulse can be superimpose on supply voltage for the load current of 15 Amp.
Salient Features
  • Compact design
  • Fully safe operation
  • Positive and negative polarity pulse selection
  • Variable output voltage from 4 – 15 kV
  • Solenoid operated sphere gap trigger arrangement
  • Output voltage peak display by digital kV meter
  • Charging supply isolation just before the operation of sphere gap (trigger)
    Cost: Approx. Rs. 6.0 lakhs per unit.
Application
To conduct induced failure test on GLS lamps as per IS: 15518 (part 1) 2004   
 
Specification
  Input voltage 230 V ac, 50 Hz
  Output Voltage peak 2.8kVp – 3.1kVp(for lamp rated upto    100W)
    2.4 kVp – 3.1 kVp(for lamp rated above 100W)
  Rise time < 1 µ sec
  Tail Time  <10 µ sec for lamps rated above 100W
    8-20 µ sec for lamps rated upto 100W
  Angle 70º ± 10º
     

Salient Features
  • Lamp rating between 200 V – 250 V
  • No control set up required
  • Single switch for triggering
    Cost:  Approx. Rs. 1.5 lakhs per unit
 
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