Product Manual

General Instructions and Regulations
13.4.17 Kapitel/Chapter 3: General Instructions and Regulations - Seite/Page 19
3.6.1.1 Protective conductor and potential equalisation:
Electric voltage above 50 V may be life-threatening. Fort this reason systems are grounded with a protective
conductor. In connection with a RCD the current supply will be disconnected in case of a failure.
Appropriate safety precautions like the RCD and corresponding fuses have to be provided by the customer
to guarantee a save operation of the generator.
3.6.1.2 Protective conductor for Panda AC generators:
The generator is earthed“ as a standard (centre and ground are interconnected in the generator terminal
box by a shunt). This is a basic first-level safety measure, which offers protection as long as no other
measures are installed. Above all, it is designed for delivery and a possible test run.
This „neutralisation“ (Protective Earthing Neutral - PEN) is only effective if all parts of the electrical
system are jointly „earthed“ to a common potential. The shunt can be removed if this is necessary for technical
reasons and another protective system has been set up instead.
While the generator is being operated, the full voltage is applied to the AC control box, as well.
Therefore, it is essential to ensure that the control box is closed and secured against touch while
the generator is running.
The battery must always be disconnected if work on the generator or electrical system is to be
carried out, so that the generator cannot be started up unintentionally.
3.6.1.3 Switch off all loads while working on the generator
All loads must be disconnected prior to working on the generator to avoid damage to the devices. In addition, the
semiconductor relays in the AC control box must be disconnected in order to avoid the booster capacitors being
activated during set-up. The negative terminal of the battery must be disconnected.
Capacitors are required to run the generator. These have two varying functions:
A) The working capacitors
B) The booster capacitors
Both groups are located in a separate AC control box.
Capacitors store electrical energy. High voltages may remain across the capacitor contacts even after they have
been disconnected from the mains. As a safety precaution, do not touch the contacts. If the capacitors must be
replaced or inspected, the contacts shall be short-circuited by connecting an electrical conductor to discharge
potentially remaining potential differences.
If the generator is switched off normally, the working capacitors are automatically discharged via the winding of the
generator. The booster capacitors are discharged by means of internal discharge resistors.
For safety reasons, all capacitors must be discharged through short-circuiting before work is carried out on the AC
control box.
3.6.1.4 Potential equalisation for Panda AGT DC generators
For further information specific to your generator, see the chapter installation.