Earth | Ground Systems Testing

Portable current injection system designed to simulate system fault currents and their effects on electrical and utility infrastructure

The Model 4062 is a frequency adjustable switch mode current injection source that is in effect the bigger brother to the 200 VA injection unit above. It is used to drive variable voltage and current magnitudes into an earthed or passive load loop at maximum power continuously if required.

The 4063 is an 1800 VA rated coupling transformer with eight individual tap settings covering an impedance range from 1 to 200 Ohms. Used in conjunction with the Model 4062 the tap selection must also be reflected in the tap menu settings of the Injection Unit which also drives the coupling transformer.

The Model 4041 is the largest of our switch mode current injection sources used for injection based testing. This 3 phase unit works on the identical principle of operation as our 2kVA system, however the 4041 in conjunction with the 4042 coupling transformer have been specifically designed to perform current injection tasks over very long haul and demanding environments continuously at maximum power.

Model 4042 is our largest coupling transformer, with eight secondary taps rated to 8kVA. The 8 taps on the 4042 allows the user to adjust the injection voltage and current to a desired value via individual tap settings whose impedance ranges from 1 to 80 Ohms.

When performing earthing/grounding system tests it is essential to filter out the predominant 50 or 60Hz currents that are often present in a typical test situation. This is done by injecting at frequencies other than 50 or 60Hz and making sure that the instrument which detects voltages and currents around the loop is tightly tuned to the same frequency.

The 4025E is the latest revision in our 4025 series of frequency selective multi-meters. It maintains all of the features of the previous models for measuring the I/V magnitudes and phase of signals induced into an earth loop via high power current injection.

The ECT-4 is a 4 wire Kelvin micro-ohm meter used to check the electrical quality of metallic structures and their connection integrity to other bonded structures in grids and electrical systems such as a sub-station or transmission station.

The 4051 lightning impulse impedance tester is used to inject a simulated lightning impulse signal at up to 30 Amps between two electrodes such as a Pylon footing and a remote test electrode.