求翻译：一类是国家规定的安全电压等级及控制电压等低电压电能，有交流与直流之分，交流36V以下，直流24V以下，如24V直流控制电源，或应急照明灯备用电源。是什么意思？

One is the security of the state voltage and low voltage power control voltage, AC and DC are divided, the following AC 36V, DC 24V or less, such as 24V DC control power supply, standby power or emergency lighting.

One of which is set by the State security and control voltage voltage levels, such as a low-voltage electrical energy exchanges and DC-36, the exchange V V Following, DC 24, such as the following 24 V DC power or emergency lighting, stand-by power.

One kind is national low voltage electrical energies and so on stipulation safe voltage rank and control voltage, has the exchange and the direct-current division of, exchanges below 36V, directs current below 24V, like 24V cocurrent control power source, or emergency flare emergency power supply.

A kind of voltage level is set by the State security and the control voltage, low voltage electrical energy, AC and DC, AC 36V, 24V DC, 24V DC power, standby power supply or emergency lighting lamp.

A kind of voltage level is set by the State security and the control voltage, low voltage electrical energy, AC and DC, AC 36V, 24V DC, 24V DC power, standby power supply or emergency lighting lamp.