德国DOLD多德欠电压继电器模块BA9043选型手册和样本

Undervoltage relay BA 9043

Undervoltage detection in 3 phase systems

三相系统中的欠压检测

• According to IEC 255, EN 60 255, VDE 0435 part 303 • 3-phase • For nominal voltage of 3 AC 100 / 57 to 690 / 400 V • Measures arithmetic mean value • Adjustable operate and release value • For 3p3w or 3p4w systems • BA 9043 optionally with adjustable time delay • Closed circuit operation • LED indicator for operation and state of contact • Insensitive to harmonics • Frequency up to 400 Hz • Width 45 mm

BA 9043（可选）可调延时•闭路操作•用于操作和接触状态的LED指示器•对谐波•频率高达400 Hz•宽度45 mm

For determination of the arithmetic mean value of the voltage the 3phases are measured against N. The variants without N ( /001 and /003) measure L1 and L2 against L3. delay the delay is only active at U ≥ 0,6 UN . At < 0.4 UN the relay switchesoff without delay.

根据电压的算术平均值，3相相对于N进行测量。没有N（/001和/003）的变体相对于L3测量L1和L2。延迟延迟仅在U时有效≥ 0,6联合国。在<0.4时，立即取消继电器动作