Case size
(mm)/(inches)
A
B
C
D
E
F
G
H
J
K
6U, 1/2 x 19”
265.9/
10.47
223.7/
8.81
242.1/
9.53
255.8/
10.07
205.7/
8.10
190.5/
7.50
203.7/
8.02
-
228.6/
9.00
-
6U, 3/4 x 19”
265.9/
10.47
336.0/
13.23
242.1/
9.53
255.8/
10.07
318.0/
12.52
190.5/
7.50
316.0/
12.4
-
228.6/
9.00
-
6U, 1/1 x 19”
265.9/
10.47
448.3/
17.65
242.1/
9.53
255.8/
10.07
430.3/
16.86
190.5/
7.50
428.3/
16.86
465.1/
18.31
228.6/
9.00
482.6/19.00
The H and K dimensions are defined by the 19” rack mounting kit.
Mounting alternatives
M16079-3 v12
• 19” rack mounting kit
• Flush mounting kit with cut-out dimensions:
– 1/2 case size (h) 254.3 mm/10.01” (w) 210.1 mm/
8.27”
– 1/1 case size (h) 254.3 mm/10.01” (w) 434.7 mm/
17.11”
• Wall mounting kit
See ordering for details about available mounting alternatives.
Injection equipment hardware
Injection unit REX060
GUID-59174783-57D0-4F39-AE7F-B59FA88CB230 v1
The injection unit REX060 is used to inject voltage and
current signals to the generator or motor stator and rotor
circuits. REX060 generates two square wave signals with
different frequencies for injection into the stator and rotor
circuits respectively. The response from the injected voltage
and currents are then measured by the REX060 unit and
amplified to a level suitable for the analog voltage inputs of
IED.
Stator injection module SIM
GUID-CF2B2004-97E9-4593-95CB-2E86A01EA779 v2
The SIM module is installed into the REX060 enclosure. The
SIM module generates a square wave voltage signal for
injection into the stator circuit via the neutral point VT/NGT.
The SIM module measures the voltage and current from the
injected signal and the IED consecutively calculates the stator
to earth impedance. If the calculated impedance is lower than
the preset value an ALARM and/or TRIP output is set.
Rotor injection module RIM
GUID-B2CA6C9E-2A24-483C-B9C2-47FFF2BBB283 v2
The RIM module is installed into the REX060 enclosure. The
RIM module generates a square wave voltage signal for
injection into the rotor circuit via a capacitor unit REX061 for
isolation. The RIM module measures the voltage and current
from the injected signal and the IED consecutively calculates
the rotor to earth impedance. If the calculated impedance is
lower than the preset value an ALARM and/or TRIP output is
set.
Coupling capacitor unit REX061
GUID-39A03C0F-44DC-47DD-9D7E-66C8292CD3A8 v1
REX061 isolates the injection circuit from the rotor exciter
voltage.
The REX061 coupling capacitor unit grounding point and
grounding brush of the rotor shaft should be properly
interconnected.
Shunt resistor unit REX062
GUID-90D6AF74-D9AC-49B8-B2CA-8A94E58ADEA5 v1
REX062 is typically used when injection is done via a
grounding transformer.
COMBIFLEX Injection equipment
GUID-BFA755D6-9CE7-4342-B4F9-4E4F525A554A v2
RXTTE4 and optional protective resistor are used to inject
fundamental frequency AC voltage into the rotor circuit.
1MRK 502 068-BEN D
Generator protection REG670 2.1 IEC
Product version: 2.1
ABB
37
