FAQ
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1．What is the recommended timing for updating the product?
The recommended renewal period for our components is based on the "Guidelines for Maintenance and Inspection of High and Low Voltage Electrical Equipment" published by JEMA (The Japan Electrical Manufacturers' Association) and is determined as either the number of years elapsed since installation, or the point at which the specified number of switching operations (which varies depending on the model) is reached, whichever comes first.
High voltage distribution boards: 20 years after manufacture, high voltage vacuum electromagnetic contactors and combination switches: 15 years after manufacture, low voltage components such as transfer switch contactors: 15 years after manufacture.
Because product lifespan varies depending on the usage environment and whether regular maintenance is performed, we recommend replacing the product around this time.
2．Does a transfer switch contactor operate automatically?
Our transfer switch contactor or high-voltage vacuum transfer switch do not have a built-in function to automatically switch in response to power outages or restorations.
To achieve automatic switching, a control circuit is required that combines external circuits with a power outage detection relay and other components.
3．Can we operate a transfer switch contactor and high-voltage vacuum transfer switch manually using the operating handles?
In our transfer switch contactor and high-voltage vacuum transfer switch, the primary purpose of manual operation is to perform detailed inspections of the mechanical and live parts in a voltage-free state.
Manual load switching does not guarantee performance because the switching force and speed vary depending on the operator.
In particular, if the input power on either the I or II power supply is applied and a load is present, manually switching the power supply may cause an arc, potentially leading to contact damage or welding of the contacts.
Even if operation is not possible in a voltage-free state, manual operation is possible in an unloaded state. However, there is a risk of electric shock, burns, or equipment damage, so please ensure that there is absolutely no load when performing manual operation.
If you require manual load switching, please consider using a manual load switch such as the AICUT (LB/LBN Series).