IMM7960 / IMM7990 – Motor Protection
Products family : Motor Protection
Sector : Industry
The optimum operation of an electrical network depends particularly on the reliability and the availability of the protection, measuring and automation devices, and the way these devices can communicate their information.
IMM 7960 and IMM 7990 relays have been designed to provide electrical protection for high and medium voltage motors, as well as for low voltage high power motors. These devices incorporate in one case all the functions necessary for sophisticated protection of all types of AC motors.
ANSI codes
5 – Thermal start authorization
37 – Undercurrent or underpower device
46 – Reversal, loss of phase or unbalance phase
48 – Too long start
49 – Thermal overload
50 – Instantaneous overcurrent
50N – Instantaneous earth fault overcurrent
51LR – Locked rotor
51N – Earth fault overcurrent
66 – Limitation of number of starts