TMS7003 / TMS7004 – Under and Overvoltage Relays
Products family : Voltage 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 informations.
TMS 7000 relays are designed to monitor the voltage of three phase electrical networks either balanced or unbalanced:
– TMS 7003: when only phase to phase voltages are available as measurement quantities in the relay.
– TMS 7004: when phase to neutral voltages are available.
ANSI codes
27 – Undervoltage
27P – Positive sequence undervoltage
47 – Maximum of negative sequence voltage
59 – Overvoltage
59N – Maximum of zero sequence voltage