ABB RELION 670 Series Technical Manual page 1346

Section 22
IED hardware
22.3.5 Wall mounting dimensions
IEC04000471 V2 EN-US
Figure 678: Wall mounting
Case size (inches) A
6U, 1/2 x 19" 10.50
6U, 3/4 x 19" 15.92
6U, 1/1 x 19" 20.31
22.3.6 External resistor unit for high impedance differential protection
1340
B C
10.52 10.74
14.94 10.74
19.33 10.74
WARNING! - USE EXTREME CAUTION!Dangerously high voltages might be present
on this equipment, especially on the plate with resistors. Do any maintenance
ONLY if the primary object protected with this equipment is de-energized. If
required by national law/standard enclose the plate with resistors with a
protective cover or in a separate box!
IEC04000471-2-en.vsd
D E
15.36 9.57
15.36 9.57
15.36 9.57
1MRK 502 066-UUS B
M11569-3 v4
SEMOD154026-4 v3
Technical manual