Enclosure class - Arc protection - Auto synchronization - Bay control and measurement - Merging unit - Transformer protection - 2 winding - Feeder protection - Voltage regulation - Capacitor bank protection - Petersen Coil control - Grid automation - Busbar differential protection (high impedance) - Back-up protection - Motor protection - Busbar protection (voltage and frequency) - Transformer protection - 3 winding - Interconnection protection - Generator protection - Power management/Load shedding - Installation Manual - REX640 Protection and control - Relion Protection and Control - PCL4 - IEC - ANSI - 16.02.2023

REX640 Installation Manual
Table 1. Degree of protection of the protection relay
Description Value
Front/connector side IP 20 (with ring-lug signal connectors IP 00 or IP 10 depending on wiring)
Top and bottom IP 30
Rear IP 40
Table 2. Degree of protection of the local HMI
Description Value
Front IP 54
Other sides IP 20
Figure 1. REX640 sides
image/svg+xml312145
1
Side
2
Top
3
Rear
4
Front/connector side
5
Bottom