PLC/DCS备件系统DS200TBQDG1A光纤接口板工控卡件
产品详情资料:
PLC/DCS备件系统DS200TBQDG1A光纤接口板工控卡件
测试中应考虑施加到继电器的电流的相位差(参见接地故障继电器模块手册中开关SGF2/1和SGF2/2的功能以及cos项符号的规范)。如果同时满足以下条件,模块将启动:-中性电流与相电流的剩余电流之比高于设定值I01/∑高压侧I1或设置I02/∑低压侧I2-方向差动电流超过运行特性值-基于二次谐波的闭锁和外部闭锁不会阻止启动
产品英文详情资料:
PLC/DCS备件系统DS200TBQDG1A光纤接口板工控卡件The phase difference of the currents applied to the relay should be considered in the test (see the functions of switches SGF2/1 and SGF2/2 in the manual for the earth-fault relay module and the specification of the sign of the cos? term).The module starts, if the following conditions are fulfilled at the same time: - the ratio of the neutral current and the residual current of the phase currents is above the setting I01/∑I1 on the HV side or the setting I02/∑I2 on the LV side - the directional differential current exceeds the value of the operation characteristic - the blocking based on the second harmonic and external blocking do not prevent starting
