请注意:此版本的所有临时修订版将在您购买时提供。消防泵控制器SUL 2181范围1。1涵盖的产品1。1.1这些要求包括用于启动和停止离心式和容积式消防泵的控制器，包括根据附录a第1项的规定，用于带或不带转换开关的电机或发动机驱动泵的自动和非自动类型。涵盖的控制器类型包括柴油发动机、电动机、有限服务、中压和住宅。控制器可能适合用作维修设备。根据附件a第2项的规定，本设备用于安装在非危险场所。 1.1.2电动离心消防泵的控制器适用于额定电压为600V或以下的鼠笼式或绕线转子电机。鼠笼式电机控制器可用于跨线或减少涌流起动。控制器可配备整体式自动转换开关。1.1.3电动机驱动的离心式消防泵的变速消防泵控制器拟与鼠笼式感应电机、额定电压为600 V或以下、额定频率为50 Hz或60 Hz的逆变器负载电机一起使用。1.1.4有限服务控制器用于额定功率为22 kW（30 hp）或以下、600 V或以下的鼠笼式电机的跨线启动。 控制器可配备整体式自动转换开关。1.1.5中压消防泵控制器适用于额定电压为601 V-7.2 kV AC的鼠笼式电机。1.1.6住宅消防泵控制器适用于额定电压为240 V或以下的单相鼠笼式电机。根据附录a.1.1.7中第35项的要求，住宅消防泵控制器拟用于一个或两个家庭住宅单元。额定值小于等于24 V DC的柴油机消防泵控制器拟用于消防泵发动机。如有需要，交流电压限制为600 V AC或更低。1.2未涵盖的产品1。2.1拟用于消防泵电路的自动转换开关，与控制器分开提供。 注:附录a第11项的要求涵盖了消防泵电路的独立自动转换开关。

Please note: All interim revisions for this edition available at time of your purchase will be included.Fire Pump ControllersUL 2181 Scope1.1 Products covered1.1.1 These requirements cover controllers intended for starting and stopping centrifugal and positive displacement fire pumps, including automatic and non-automatic types for electric motor with or without transfer switch or engine driven pumps in accordance with Annex a, item 1. Types of controllers covered include diesel engine, electric motor, limited service, medium voltage and residential. Controllers may be suitable for use as service equipment. This equipment is for installation in non-hazardous locations in accordance with Annex a, item 2.1.1.2 Controllers for electric motor driven, centrifugal fire pumps are intended for use with squirrel cage or wound rotor motors rated 600 V or less. Controllers for squirrel cage motors may be for across-the-line or reduced inrush current starting. Controllers may be provided with integral automatic transfer switches.1.1.3 Variable speed fire pump controllers for electric motor driven, centrifugal fire pumps are intended for use with squirrel cage induction, inverter duty rated motors rated 600 V or less, and rated for 50 Hz or 60 Hz.1.1.4 Limited service controllers are intended for across-the-line starting of squirrel cage motors rated 22 kW (30 hp) or less, 600 V or less. Controllers may be provided with integral automatic transfer switches.1.1.5 Medium voltage fire pump controllers are intended for use with squirrel cage motors rated 601 V - 7.2 kV AC.1.1.6 Residential fire pump controllers are intended for use with single-phase squirrel cage motors rated 240 V or less. Residential fire pump controllers are intended to be used in one or two family dwelling units in accordance with the requirements of item 35 in Annex a.1.1.7 Diesel engine fire pump controllers rated nominal 24 V DC or less are intended for use with fire pump engines. Where required, AC voltage is limited to 600 V AC or less.1.2 Products not covered1.2.1 An automatic transfer switch intended to be used in fire pump circuits, that is provided separate from a controller.Note: Stand-alone automatic transfer switches for fire pump circuits are covered by the requirements of item 11, Annex a.