Siemens APT Relays – The action of high and low voltage relays and how to adjust the low voltage side

Create Date: 2024-8-30 12:03:23|Source: APT/Siemens Shanghai Ergong

1. Disconnect the control power supply: Before making the low-voltage terminal contact adjustment, the control power supply should be disconnected first to avoid the current directly or indirectly passing through the relay contact, and avoid electric shock or damage to the relay.

2. Open the relay cover: Open the relay cover and you can see the internal structure of the relay.

3. Locate the low-voltage contacts: Inside the relay, locate the location of the low-voltage contacts. Most relays will indicate the location and identification of the contacts, if you have any doubts, you can refer to the relay manual or ask the manufacturer or other professionals.

4. Adjust the low-voltage end contacts: Using the adjustment tool, gradually adjust the low-voltage end contacts until the desired state is reached. When adjusting, it needs to be adjusted gradually, small adjustments, and then gradually plug and unplug the control power supply and test the working state of the relay until the desired effect is achieved.

5. Close the relay cover: When the low-voltage end contact adjustment is completed, close the relay cover to ensure that the contacts are correct.

It should be noted that the adjustment of the low-voltage end contacts needs to be operated by professionals, otherwise it may affect the normal operation of the relay. Therefore, before making contact adjustments, you should first understand the working principle of the relay and its electrical parameters to ensure the correctness and safety of the adjustment.
Siemens APT Relays – The action of high and low voltage relays and how to adjust the low voltage side


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