7XR8004 – Resistor Coupling Unit for 7XT71
The 7XR8004 resistor coupling unit is the necessary accessory for the 1 to 3 Hz rotor ground-fault protection
together with the 7XT71 (1 to 3 Hz) generator and the 7UM62/7UM85 machine protection relays.
This device replaces the previous 7XR6004-0*A00 resistor unit, allowing higher excitation voltages at a
reduced size.
2.1
Protection Degree according to IEC 60529
Ordering Information
Use the following table for ordering the device:
Order No. / MLFB
Pos.
1
2
3
4
5
6
7
-
8
9
10
11
12
7
X
R
8
0
0
4
-
0
A
0
0
Housing
Panel surface mounting housing with screw terminals → B
2
SIPROTEC, Coupling Units for Generator Protection, Manual
25
C53000-H5040-C072-1, Edition 09.2018