Mounting methods

•Flush mounting

•Semi-flush mounting

•Semi-flush mounting in a 25° tilt

•Rack mounting

•Wall mounting

•Mounting to a 19″ equipment frame

•Mounting with an RTXP 18 test switch to a 19″ rack

Panel cut-out for flush mounting

•Height: 161.5 ±1 mm

•Width: 165.5 ±1 mm

Relay case and plug-in unit

The relay cases are assigned to a certain type of plug-in unit.

For safety reasons, the relay cases for current measuring relays

are provided with automatically operating contacts for short

circuiting the CT secondary circuits when a relay unit is

withdrawn from its case. The relay case is further provided with

a mechanical coding system preventing the current measuring

relay units from being inserted into relay cases intended for

voltage measuring relay units.