Rack mounting the standard size relay with local HMI - 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

Mount the LHMI and the mounting bracket to the rack plate.

Attach the 7U rack plate to the rack frame.
Mount the LHMI with its own installation brackets to the LHMI cutout.
Mount the mounting bracket to the 7U rack plate with M5 screws.
Tighten the M5 screws to 4 Nm ±5% (2.9502 ft-lb ±5%).
Mount the M5 screws in the upper holes of the mounting bracket, but do not tighten them. Leave them 3...4 mm (0.1181...0.1575 in) open.

Figure 1. Mounting the local HMI and mounting bracket

Install the RJ-45 coupler with a cable to the panel cutout and connect the cable to the LHMI service port X1.2.

Figure 2. Installing the RJ-45 coupler

Attach the mounting bracket to the protection relay with M6 screws.

Tighten the M6 screws to 9 Nm ±5% (6.6381 ft-lb ±5%).

Figure 3. Mounting M6 screws

Lift the protection relay to its place on the existing screws on the mounting bracket.

Mount the M5 screws in the bottom holes.

Tighten the four M5 screws on the mounting bracket to 4 Nm ±5% (2.9502 ftlb ±5%).

Figure 4. Mounting and tightening the M5 screws