Machine tool lighting short circuit protection circuit
Source: InternetPublisher:三月小雨 Keywords: Machine tools short circuit protection circuits transformers Updated: 2020/04/30
In machine tool lighting, a mobile 36V transformer lighting power supply is generally used. During use, short circuits often occur and burn out fuses
, transformers, etc. If a relay is used as the switch of the transformer,
the above situation can be avoided.
The circuit is shown in the figure. Turn on the switch S and press SB1, the secondary
side of the transformer outputs 36V, causing the relay KA to close. When a short-circuit fault occurs in the lighting circuit transformer
, the voltage of the relay coil is zero, KA is powered off and released, and the lighting circuit
is protected.
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