Safety Precautions for High Voltage/Line Voltage


It is a precondition for performing high-voltage measurements that the user has knowledge of automotive technology and is therefore aware of the sources of danger and risks in the workshop and on motor vehicles. An additional country-specific qualification is mandatory. Very high voltages occur in electrical systems. Due to voltage flashover on damaged components, such as marten damage or touching live components, the risk of electric shock is likely. Voltage flashover can occur e.g. on the primary and secondary side of the ignition system, the connection to the vehicle, the lighting systems or the wiring harness with plug connections. Therefore regard the following: Only use power supply cables with grounding contact. Only use a checked or the attached power cord. Always use the original cable set. Do not exceed the voltage limits indicated on the connecting cables. The voltage values to be measured must be shielded extra or even twice from dangerous line voltage. The voltage limits printed on the test leads must not be exceeded. Pay attention that the allowed measuring range is not exceeded when measuring positive and negative voltage at the same time. Regularly check cables and adapters for damage. Perform any assembly work such as the connection of the MT-HV to the vehicle or the replacement of components only when ignition is switched off. Do not touch live components when ignition is switched on.

It is a precondition for performing high-voltage measurements that the user has knowledge of automotive technology and is therefore aware of the sources of danger and risks in the workshop and on motor vehicles. An additional country-specific qualification is mandatory.

Very high voltages occur in electrical systems. Due to voltage flashover on damaged components, such as marten damage or touching live components, the risk of electric shock is likely. Voltage flashover can occur e.g. on the primary and secondary side of the ignition system, the connection to the vehicle, the lighting systems or the wiring harness with plug connections. Therefore regard the following:

Only use power supply cables with grounding contact.
Only use a checked or the attached power cord.
Always use the original cable set.
Do not exceed the voltage limits indicated on the connecting cables.
The voltage values to be measured must be shielded extra or even twice from dangerous line voltage. The voltage limits printed on the test leads must not be exceeded. Pay attention that the allowed measuring range is not exceeded when measuring positive and negative voltage at the same time.
Regularly check cables and adapters for damage.
Perform any assembly work such as the connection of the MT-HV to the vehicle or the replacement of components only when ignition is switched off.
Do not touch live components when ignition is switched on.