SPAM-150C 组合式多功能电机保护继电器

Description

SPAM-150C 组合式多功能电机保护继电器

组合式多功能电机保护继电器是连接在被保护电机驱动器的电流互感器上的二次继电器装置。连续测量被保护装置的三相电流和中性电流，并在此基础上计算电机的热状态，检测网络故障。在故障情况下，继电器的保护单元提供报警或跳闸断路器。通过输出继电器矩阵的适当编程，各种起动、预先报警或重新启动抑制信号作为触点功能接收。

电机保护继电器包含一个外部逻辑控制输入，由辅助电压电平上的控制信号激活。控制输入对继电器的影响由测量模块的编程开关决定。控制输入可用于阻塞一个或多个保护级，用于执行外部跳闸命令，用于抑制重新启动尝试或在手动复位模式下重置锁存输出继电器。

SPAM-150C 组合式多功能电机保护继电器

The combined multifunction motor protectionrelay is a secondary relay device which is connected to the current transformers of the protected motor drive. The three phase currentsand the neutral current of the protected deviceare continuously measured and on the basis ofthis measurement, the thermal condition of themotor is calculated and the faults of the networkare detected. In fault situations the protectiveunits of the relay provide alarm or trip thecircuit-breaker. By appropriate programming of the output relay matrix, various starting, prior alarm or restart inhibit signals are received as contactfunctions.

The motor protection relay contains one external logic control input, which is activated by acontrol signal on the auxiliary voltage level. Theinfluence of the control input on the relay isdetermined by programming switches of themeasuring module. The control input can beused either for blocking one or more of theprotective stages, for carrying out an externaltrip order, for inhibiting a restart attempt or forresetting a latched output relay in the manualreset mode.