Primary Current Injection Test Trolley for Switchgear Testing

Primary Current Injection Test Trolley for ACB, MCCB, MCB, VCB and SF6 breaker testing. High-current injection, trip time measurement, and custom solutions.

Primary Current Injection Test Trolley

The Primary Current Injection test trolley from SCR Elektroniks is a reliable testing system used for checking the performance of switchgear and protection devices. It generates high current at low voltage, allowing manufacturers and maintenance engineers to test equipment under actual operating conditions. The trolley is commonly used for testing ACBs, MCCBs, MCBs, VCBs, SF6 circuit breakers, and other high-current electrical components.

The system is designed to inject a controlled amount of current into the primary circuit of electrical equipment and verify its performance. It features digital displays for current measurement and trip time indication, helping users accurately evaluate the operation of protective devices.
With multiple CT range selections and adjustable current control through a variac, the trolley offers flexibility for testing equipment with different current ratings. Its portable design makes it easy to move around manufacturing plants and testing facilities.

User-selectable continuous duty and short-time duty operation.
Suitable for both single-phase and three-phase testing.
Built-in trip time measurement and indication system.
Portable trolley mounted on lockable castor wheels for easy movement.
Available in AC, DC, or combined AC/DC configurations.
Can be integrated with temperature rise testing systems.
Optional PC-based control and data logging.
Multiple CT ranges for easy selection of required test current.
Simple and robust operation suitable for factory and field testing.

Parameter	Specification
Input Supply	415 V AC, Two Phase with MCB Protection
Digital Voltmeter	3½ Digit, 0–500 V AC
Digital Ammeter	3½ Digit, 0–100%
Current Control	Variac for smooth current adjustment
Test Time Indicator	Four selectable ranges
Current Selection	Five CT ranges
Indications	Power ON, Output ON, Overload
Construction	Portable trolley with lockable wheels

VARIANTS

Current Injection Test Trolley - 650 Max

AC Variable Current Source : 50 to 650A AC – This is a with the help of True RMS Sensing Servo Controller to keep the current within +/- 1% of set value. Additional automatic contactor based switching for on and off for cyclic endurance / timed on-off test
Output 6V, 650A, 8 V, 125 A and 10V, 50A selectable with link.
CT with 10, 20, 40, 80, 160, 320, 640 A primary taps and 1 Amp secondary. Selection of CT range with shorting link.
Contactor and Push Buttons for making ON / OFF the output – The unit can be operated with the help of micro-controller based keypad
Digital Ammeter 0 to 100.0% of CT Range Count of selected CT range.
Input Supply : Single Phase 240V AC 50 HZ 15A max

Current Injection Test Trolley- 500A max

AC Variable Current Source : 0 to 500A AC
Output 6V, 500A and 10V, 50A selectable with link.
CT with 10, 25, 50, 100, 250 and 500A primary taps and 1 Amp secondary. Selection of CT range with shorting link.
Contactor and Push Buttons for making ON / OFF the output.
Digital Ammeter 0 to 100.0% of CT Range Count of selected CT range.
Input Supply : Single Phase 240V AC 50 HZ 15A max

Current Injection Test Trolley - 1000A max

Variable Current Source 0 – 1000A with 1000A/5V, 500A/7V, 200A/8V, 100A/10V, 20A/20V tapping. The Range can be selected by selecting th e shorting links.
The CT will have 20 Amps., 100 Amps, 200 Amps, 500Amp & 1000Amp range.
The current will be displayed on 3 ½ digit Digital Ammeter.
Digital Voltmeter will be provided to know the variac position.
Digital Time Interval Meter 4 digits, with 4 ranges will be provided for “Trip Time” Measurement.

The Primary Current Injection Test Trolley can be customized to suit specific testing requirements.Available options include:

Customized continuous-duty and short-time current ratings.

Single-phase, two-phase, or three-phase models.

Customized output voltage and current capacities.

Integrated temperature rise testing with multiple measuring channels.

Combined primary and secondary injection testing systems.

AC-only, DC-only, or combined AC/DC current injection arrangements.

PC-based monitoring, control, and report generation.

This flexibility allows the system to be adapted for different industries, testing standards, and customer applications.

The Primary Current Injection Test Trolley is widely used for:

Testing of ACBs, MCCBs, MCBs, VCBs, and SF6 circuit breakers.

Verification of protection systems and relay operation.

Switchboard and feeder testing.

High-current cable testing.

Factory Acceptance Testing (FAT) of switchgear panels.

Quality control during switchgear manufacturing.

Temperature rise testing when integrated with thermal measurement systems.

Maintenance and commissioning of electrical distribution systems.

Primary Current Injection Test Trolley

SCR ELEKTRONIKS have developed Primary and Secondary Current Injection test trolley for Switchgear manufacturers for testing of ACB , MCB , MCCB. It is low Voltage high Current source with control circuitry, digital read out for test current and trip time measurement. We can select different links of CT range as per the required test Current.

Primary Current Injection Test Trolley for Switchgear Testing

Primary Current Injection Test Trolley for ACB, MCCB, MCB, VCB and SF6 breaker testing. High-current injection, trip time measurement, and custom solutions.