Electrical terms in electricity sector is vital to do a professional job. Today we will review the electrical terms. Here the details of subject.
Operating voltage Ub
The operating voltage Ub indicates the voltage range in which the proximity switch complies with its guaranteed operating data.
Nominal voltage Un
The rated voltage Un is the voltage specified by the real switching distance Sr at 293 K (20 ° C). It is 24 V DC for DC switches and 220 V AC for AC switches.
The minimum load is the smallest load required on two-wire AC switches to ensure safe operation of the proximity switch.
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Maximum load current
This is understood to mean the current with which the proximity switch may be loaded during continuous operation.
The inrush current is 5 x max. Load current and may flow for a maximum of 10 ms.
No-load current consumption (residual current)
The term “no-load current consumption” refers to the current that flows through the non-switched device and across the load, in order to ensure the power supply to the electronics.
Internal power consumption
In the case of DC switches, the residual current consumption is the current consumption of the proximity switch without load on the output.
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The output resistance of the DC voltage switch is 3.3 k to 10 kOhm.
Short circuit protection
Short-circuit proof means that the proximity switch will not be destroyed in the event of a short-circuit of any kind or if the overload is unlimited over time. After removing the short circuit or the overload, the proximity switch is automatically ready for operation again. Any permutation possibility up to the maximum operating voltage does not lead to the destruction of the proximity switch.
This is the voltage that drops at the through-connected proximity switch.
Reverse polarity protection
All proximity switches have a built-in reverse polarity protection. This means that the proximity switch is not destroyed by incorrect polarity of the supply voltage.
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