Product overview

XL-21 type low-voltage enclosed power cabinet is suitable for power generation and industrial and mining enterprises with AC voltage of 500V and below three-phase three-wire, three-phase four-wire and three-phase five-wire systems for power and lighting distribution. The product has the characteristics of flexible power distribution scheme, convenient combination, strong practicability and novel structure.

Model and meaning

Main structural features

◆ 1. The main electrical performance is in full compliance with IEC60439-1:1992 and GB7251.1-1997.

◆ 2. The auxiliary circuit has local, remote, automatic control and local and remote control switching functions, and the contactor can be maintained by DC.

◆ 3. The power-receiving main switch has optional instantaneous tripping and thermal phosphorus tripping protection. In order to cooperate with the next main switch, instantaneous protection is canceled, leapfrog tripping is avoided, and it has automatic switching, manual operation and automatic switching functions.

◆ 4. The main switch of the feed circuit has instantaneous tripping and thermal magnetic tripping protection. When required by users, leakage protection can be installed

◆ 5. The motor control circuit has short-circuit instantaneous, overload, undervoltage release and phase failure protection.

◆ 6. The power receiving circuit is equipped with ammeter and voltmeter.

Main technical parameters