型号: IMM7000       颜色:       重量:

详细介绍：

For the protection of all types of motor, the use of digital multi-function relays is recommended. These relays include the following features : A sophisticated thermal image, a unit sensitive to the negative sequence component of current, a unit that provides rapid elimination of all heavy multi-phase faults, a zero sequence overcurrent unit supplied either from toroidal (ring-type or core-balance) CT or from the residual connection of line CTS.