The short answer: The condensator and battery carry electricity even when the network connection is interrupted.The resources must be separated, the possibility of backfeeding should be prevented, the manufacturer’s decharge time should be expected and the lack of voltage should be verified with the appropriate measurement tool.
Where can food come from?
UPS, generator, photovoltaic system, common DC bar, parallel battery group and control trafoles can create multiple power. The opening of a single switch may not separate all resources.
Why is the release time important?
Conductor and power electronics condensators can retain energy for a certain period of time.The label and technical documentation of the manufacturer are taken into account; it is not reliable to the disappearance of the indicator lamp alone.
How to measure?
The proper measurement device is tested in a known live source before the work, it is measured at the target point and the device is verified again in the live source. This process is carried out by competent electric staff.
How to separate the battery?
Battery separators, insurers and connectors are isolated according to the procedure. The risks of short circuit, arc, electrolyte and heavy battery modules are also controlled.
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