The INGVAR primary current injection test system is a powerful instrument designed for primary injection testing of protective relay equipment and circuit breakers. It's also used to test the turns ratio of current transformers and for other applications that require high variable currents.


The system consists of a control unit and a current unit. The two parts are portable and INGVAR can be quickly assembled and connected.


The control unit has many advanced features, such as a powerful measurement section that can display turns ratio as well as time, voltage, and current. A second measurement channel can also be used to test an additional current or voltage.


The INGVAR can calculate the current transformer turns ratio, impedance, power, power factor/tan delta (cos φ), and phase angle and the results are shown on the display. The current and voltage can be presented as percentages of nominal value. It also has a fast-acting hold function that freezes short-duration readings on the digital display, so when the voltage or contact signal arrives at the 'stop' input, the object under test interrupts the current, or the injection is stopped.

Power consumption

Input voltage | Output current | Input current

240 V | 2 kA | 20 A

240 V | 3.8 kA | 45 A

120 V | 2.5 kA | 30 A

120 V | 1 kA | 12 A


Outputs in parallel, 240 mains voltage

Maximal current | Maximum generation time | Minimum rest time | Load voltage

700 A | continuously | – | 2.6 V

1000 A | 30 min | 5 min | 2.5 V

2000 A | 3 min | 10 min | 2.1 V

3000 A | 1 min | 12 min | 1.8 V

5000 A | 2 sec | 3 min | 1.2 V


Outputs in series, 240 mains voltage

Maximal current | Maximum generation time | Minimum rest time | Load voltage

350 A | continuously | – | 5.3 V

500 A | 20 min | 15 min | 5.1 V

1500 A | 2 min | 12 min | 3.5 V


Ammeters

Measurement method: AC 50/60 Hz, DC RMS

Inaccuracy: 1% of range ±1 digit


Ammeter 1

Ranges:

Serial Low: 0 – 2.15 kA

Serial High: 0 – 3.30 kA

Parallel Low: 0 – 4.00 kA

Parallel High: 0 – 6.50 kA

Resolution:

0-999 A 1 A

1.00 – 6.50 kA 10 A


Ammeter 2

Ranges: 0 – 2 A / 0 – 20 A


Voltmeter

Measurement method: AC 50/60 Hz, DC RMS

Ranges: 0 – 0.2 V, 0 – 2 V, 0 – 20 V, 0 – 200 V, AUTO

Inaccuracy: 1% of range ±1 digit

Input resistance (Rin): 

240 kΩ (range 0 – 200 V)

24 kΩ (other ranges)

Dielectric withstand: 2.5 kV


Timer

Presentation: In seconds, mains frequency cycles or hours and minutes

Ranges: 

0.000 – 99999.9 s

0 – 9999 cycles

Inaccuracy: 

±(1 digit + 0.01% of value)

For the stop condition in INT-mode 1 ms

shall be added to the specified measure-

ment error.


Stop input

Max. input voltage: 250 V AC / 275 V DC

Phase angle:

Range: 0 – 359º

Resolution: 1º

Inaccuracy: ±2º (For voltage and current readings higher than 10% of the selected range)

INGVAR datasheet


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