ABB RELION Series User manual

Relion® SERIES
670/650 series and SAM600-IO IEC
Accessories
Product Guide

Copyright
This document and parts thereof must not be reproduced or copied without written permission from Hitachi Power
Grids, and the contents thereof must not be imparted to a third party, nor used for any unauthorized purpose.
The software and hardware described in this document is furnished under a license and may be used or disclosed
only in accordance with the terms of such license.
This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit. (https://
www.openssl.org/) This product includes cryptographic software written/developed by: Eric Young
([email protected]) and Tim Hudson ([email protected]).
Trademarks
ABB is a registered trademark of ABB Asea Brown Boveri Ltd. Manufactured by/for a Hitachi Power Grids company.
All other brand or product names mentioned in this document may be trademarks or registered trademarks of their
respective holders.
Warranty
Please inquire about the terms of warranty from your nearest Hitachi Power Grids representative.

Disclaimer
This document has been carefully checked by Hitachi Power Grids but deviations cannot be completely ruled out. In
case any errors are detected, the reader is kindly requested to notify the manufacturer. Other than under explicit
contractual commitments, in no event shall Hitachi Power Grids be responsible or liable for any loss or damage
resulting from the use of this manual or the application of the equipment.

Conformity
This product complies with the directive of the Council of the European Communities on the approximation of the
laws of the Member States relating to electromagnetic compatibility (EMC Directive 2004/108/EC) and concerning
electrical equipment for use within specified voltage limits (Low-voltage directive 2006/95/EC). This conformity is the
result of tests conducted by Hitachi Power Grids in accordance with the product standard EN 60255-26 for the EMC
directive, and with the product standards EN 60255-1 and EN 60255-27 for the low voltage directive. The product is
designed in accordance with the international standards of the IEC 60255 series and ANSI C37.90.

Contents
1. Available accessories....................................................6
2. Mounting kits................................................................. 6
3. RHGS cases..................................................................8
4. Test switch module........................................................ 8
5. Key switch for settings...................................................9
6. Combiflex modules........................................................9
7. Connectors.................................................................. 10
8. External resistor unit....................................................11
9. External current transformer unit.................................13
10. Interface converter..................................................... 13
11. GPS antenna..............................................................13
12. Injection unit REX060.................................................14
13. Coupling capacitor unit REX061................................ 15
14. Shunt resistor unit REX062........................................17
15. Voltage injection unit RXTTE4....................................19
16. ESD Field Kit..............................................................21
17. Power Supply............................................................. 21
18. Configuration and monitoring tools.............................21
19. Cable and dust cover................................................. 21
20. MicroScada tools........................................................21
21. User interface.............................................................22
22. Ordering..................................................................... 23
23. Related documents.................................................... 31
670/650 series and SAM600-IO IEC
1MRK 514 012-BEN K
Hitachi Power Grids 5

1. Available accessories
Mounting kits M1831-1 v3
• Mounting kits for space-saving mounting in racks,
cubicles or on walls
• IP54 protected mounting capability in cubicles for 670 and
650 series
RHGS cases SEMOD121070-2 v2
• RHGS 6, RHGS 12 and RHGS 30 cases enable mounting
of for example Combiflex modules
Test switch module M1947-1 v2
• Fail-safe testing of IEDs, using test switch RTXP 24
• Time saving while
– all connections for test are made from the front
– easy to move between IEDs of the same type
Combiflex modules SEMOD121075-2 v2
• Provide functionality such as lock-out, lock-out reset and
external contact re-enforcement
• Supervision
Key switch for settings M1990-1 v1
• Possibility to lock settings with key switch
Connectors M1997-1 v2
• Flexible connection of analog and binary signals
– Screw compression type
– Terminal blocks suitable for ring-lugs
External resistor unit SEMOD120184-10 v2
• Used with the High impedance differential protection
External current transformer unit SEMOD121078-2 v2
• Used for cost effective summation type differential
principle
Interface converter M1780-1 v2
• External interface converter from C37.94 to G703
• External interface converter from C37.94 to G703.E1
GPS antenna SEMOD121065-2 v2
• Used with the GPS time synchronization module GTM (or
GSM)
Injection equipment hardware REX060, REX061,
REX062 GUID-F6C11BE9-F5C7-4378-A3F0-9437B715E48A v1
• Is used to inject voltage and current signals to the
generator or motor.
COMBIFLEX Injection equipmentGUID-BFA755D6-9CE7-4342-B4F9-4E4F525A554A v2
RXTTE4 and optional protective resistor are used to inject
fundamental frequency AC voltage into the rotor circuit.
ESD Field Kit GUID-9C991E88-4B0E-4B1A-877A-F85E1ED192E1 v1
• Used to make work ESD safe
Power Supply GUID-2613CBA7-B7D0-4037-A3FA-01CB0DC14C40 v1
• Used to supply power to the IED
Configuration and monitoring tools SEMOD124331-1 v1M1890-1 v2
• Protection and control manager, PCM600, used to
– configure the IED
– set parameters
– monitor the IED and the system
– visualize and evaluate disturbance recordings M2078-1 v2
• Supervision and control of the power system via IEDs
(HV/Control package)
• Provides on request information from IEDs
• Collection of disturbances from IEDs
• Consists of standard library functions for easy application
engineering of a station HMI
Cable and dust cover GUID-17E99276-BE53-4D03-A6D8-B926C5F81F8F v1
• The cable is used to connect a PC to the RJ45 port on the
local human machine interface
• The dust cover protects the RJ45 port
Labels GUID-9F23A29B-E379-4705-A87F-3D9308354974 v1
• Used to label the LEDs
SAM600-IO LHMI service kit GUID-DA06ABEE-FAC7-4C7D-8912-A03FDDBEAA1D v2
• The SAM600-IO LHMI service kit is a support tool for
SAM600-IO during:
– Troubleshooting
– Commissioning
– Service
– Maintenance
2. Mounting kits
19” rack mounting IP653-1 v1M1835-3 v3
Use the 19" rack mounting kit for 6U housing to mount the
IED in a standard rack. Combine the rack mounting kit with
the side-by-side mounting kit to mount IEDs or an IED and a
test switch module in the same rack position.
M1840-3 v2
The 19" rack mounting kit is available in four designs,
suitable for 1/4, 1/2, 3/4 or full width cases and consists of
two rack flanges (1a) and (1b) with appropriate mounting
details (2) for fastening to the case.
670/650 series and SAM600-IO IEC
1MRK 514 012-BEN K
Issued: June 2021
Revision: K
Hitachi Power Grids 6
© 2017 - 2021 Hitachi Power Grids. All rights reserved.

IEC04000452-3-en.vsd
1b
1a
2
3
IEC04000452 V3 EN-US
Figure 1. The rack mounting kit
Flush mounting for 670 and 650 series IP652-1 v2M1929-3 v2
Use the flush mount kit for installation in a panel cut-out.
M1938-3 v2
The flush mounting kit for release 2.1 and earlier consists of
four fasteners (2) with appropriate mounting details (4) and
a sealing strip (5) for fastening to the IED (3). See Figure 2.
From release 2.2 onwards, the flush mounting kit consists of
two fasteners (2) with appropriate mounting details (4) and
a sealing strip (5) for fastening to the IED (3). See Figure 3.
The two fasteners are pre-assembled to the box.
To receive IP54 class protection, an additional sealing (1)
must be ordered with the IED. This sealing is factory
mounted.
IEC04000451-2-en.vsd
IEC04000451 V2 EN-US
Figure 2. The flush mounting kit (release 2.1 and earlier)
1
5
6
3
IEC16000080=1=en .vsd
2
4
IEC16000080 V1 EN-US
Figure 3. The flush mounting kit (release 2.2 onwards)
Wall mounting for 670 and 650 series IP651-1 v2M1974-3 v1
Use the wall mounting kit to projection mount the IED on a
wall.
M1973-3 v1
The wall mounting kit consists of a mounting bar pair (4)
and a IED bracket pair (6). Screws (2) and (5) and washers
(1) for fastening of the terminal are included, but not wall
fasteners (3).
xx04000453.vsd
1
2
3
4
5
6
IEC04000453 V1 EN-US
Figure 4. The wall mounting kit
Wall mounting for SAM600-IO GUID-2C7B44A9-6E63-4859-B20C-6EB36A9E0170 v1
Use the wall mounting kit to projection mount the SAM600-
IO on a wall, see figure 5.
The wall mounting kit consists of 8 washers (1), 8 screws
(2), 2 mounting profiles (3), 6 nuts (4), 4 spacers (5) and 2
mounting angles (6).
To order wall mounting kit, refer to section Mounting
accessories.
670/650 series and SAM600-IO IEC
1MRK 514 012-BEN K
Hitachi Power Grids 7
© 2017 - 2021 Hitachi Power Grids. All rights reserved.

For more details on wall mounting, refer to Installation
manual.
1
2
3
4
5
6
IEC17000054-1-en.vsdx
IEC17000054 V1 EN-US
Figure 5. Wall mounting details
Side-by-side mounting IP649-1 v1M1970-3 v1
Use the side-by-side mounting kit to mount two IEDs or a
IED and its corresponding test switch module next to each
other.
M1965-3 v3
The side-by-side mounting kit consists of two mounting
plates with appropriate mounting details (1 and 2). The
side-by-side mounted units are mounted in a rack or cubicle
using the appropriate kit; in this example, the rack mounting
kit (3) is used.
IEC040004563enOriginal.vsdx
1
2
3
4
3
IEC04000456 V3 EN-US
Figure 6. The side-by-side mounting kit
Protection cover for rear area M10592-3 v1
The protection cover for the rear area is a steel cover with a
slot for cable entrance at the bottom part.
IEC05000503-3-en.vsdx
IEC05000503 V3 EN-US
Figure 7. Protection cover for rear area
3. RHGS cases
RHGS Cases SEMOD121089-4 v2
Color matched (RAL7035) RHGS cases can be used to
mount for example Combiflex modules together with 670
series. See section "Related documents" for reference to
more detailed information about dimensions. Please
observe that cases in referenced document has a different
color.
4. Test switch module
General M1955-3 v4
The test switch module consists of a RHGS 6 case with a
test switch, RTXP 24, and a two-seat Combiflex terminal
base mounted. An optional DC-switch occupies one seat if
selected. A side-by-side mounting kit is included. The side-
by-side mounted units are mounted in a rack or cubicle
using the appropriate kit, for example the rack mounting kit.
All connections to the test switch module are made with
Combiflex socket leads. Test contacts 1-24 of the test
switch have 20 A Combiflex terminals. The signal contact of
the test switch and the Combiflex terminal base have 10 A
terminals.
For more details about the Combitest system and Combiflex
system see section "Related documents".
670/650 series and SAM600-IO IEC
1MRK 514 012-BEN K
8 Hitachi Power Grids
© 2017 - 2021 Hitachi Power Grids. All rights reserved.

xx1MRK000371-DA_1.vsd
1
3
4
2
IEC1MRK000371-DA-1 V1 EN-US
Figure 8. Example of a test switch module
1 Test switch
2 DC switch
3 Spare seat, can be used for Key switch
4 RHGS 6 case
Test switch M1952-3 v1
The test switch, RTXP 24, is used to make it possible to test
a IED in a failsafe way. Inserting a test-plug handle into the
test switch automatically makes all preparations for test in
the proper sequence. Blocked trip circuits, shortcircuited
CT’s, opened voltage circuits makes the IED terminals
available for secondary injection test.
DC-switch IP633-1 v1M1981-3 v1
The DC-switch is optional in the test switch module and are
used to switch the DC-supply of the IED ON/OFF.
M1983-3 v1
The DC-switch is of one seat Combiflex type and needs a
Combiflex terminal base to be mounted.
5. Key switch for settings M1991-3 v2
The key switch for lock-out of settings via the local human
machine interface is used to prevent unwanted changes of
settings. The switch locks the settings via a binary input.
M1993-3 v1
The key switch is of one seat Combiflex type. To install it, a
case including a Combiflex terminal base is needed. One
possibility is to install the key switch in the same case as
the test switch.
6. Combiflex modules
Auxiliary relays SEMOD121105-4 v3
Auxiliary relays can be used together with the IED to
provide functionality such as lock-out, lock-out reset or
external contact re-enforcement
When the contact rating of the IED is insufficient, it is
recommended to use RXME 1 as a contact re-enforcement.
The RXME 1 is then activated from an IED contact which is
set up to be activated together with the IED contacts
tripping the breaker. The contact of the RXME 1 is
connected in parallel, to take over the breaker trip coil
current. This gives an efficient solution and means no time
delay at tripping. See figure 9.
670/650 series and SAM600-IO IEC
1MRK 514 012-BEN K
Hitachi Power Grids 9
© 2017 - 2021 Hitachi Power Grids. All rights reserved.

IED
+
T
C
+
Breaker
RXME 1
xx06000064-2-en.vsd
-
L1
L2
L3
IEC06000064 V2 EN-US
Figure 9. RXME 1 used as a trip contact re-enforcement
When single pole tripping is used one RXME 1 is required
per phase and of course per subsystem in redundant
systems.
Lock-out can be arranged with RXMD 1 remanence relay
activated from binary outputs on IED and possible other
protection relays required to activate lock-out, see figure 10.
The contact of RXMD 1 is connected to open the closing
circuit to the breaker closing coil. Another contact can be
used to light-up a lamp push button to have indication of the
lock-out and then reset with the push-button. It is
recommended to avoid trip contact latching as this will
mean problem for example with trip circuit supervision and
further at failing breaker, mean that the trip coil is burnt and
the trip coil DC supply is tripped. The most important is to
prevent that the breaker is closed at persistent faults.
IED
+
C
C
+
Breaker
RXMD 1
xx06000231-2-en.vsd
-
+-
External
Close
+
IEC06000231 V2 EN-US
Figure 10. Lock-out using a RXMD 1 relay
For ordering codes see section "Related documents" for
reference to more detailed information.
RXME 1 RXMD 1 xx06000057.ep
IEC06000065 V1 EN-US
Figure 11. RMXE 1 and RXMD 1 relays
Push button and selector switch SEMOD121142-4 v2
The push button is available with or without pilot lamp and
with one or two buttons. It is used to reset the lock-out
relays when an external independent lock-out and lock-out
indications is required. The push button unit can also be
used as a local selector of Auto-Reclose operation when
this is required to be done locally as well as through
communication.
The selector switch is available with two or three fixed
positions and with different contact combinations. Selector
switch can e.g. be used as Local/Remote selector or as a
local selector of Auto-Reclose operation. See section
"Related documents" for reference to more detailed
information.
xx06000059.eps
IEC06000059 V1 EN-US
Figure 12. Push button and selector switch
Supervision relay SEMOD121154-4 v2
The relay RXEM1 can be used to detect for example loss of
DC voltage supply or to detect open circuits. A typical
application is continuous supervision of a circuit breaker trip
circuit, including the breaker coil. See section "Related
documents" for reference to more detailed information.
xx06000060.eps
IEC06000060 V1 EN-US
Figure 13. Supervision relay RXEM1
7. Connectors M2006-3 v3
The connectors are used for analogue signals and binary in-
and output signals.
Use the ferrules to connect two wires to the same terminal
point of a connector of screw compression type. Note that
1.5 mm2 is the maximum dimension allowed on these wires.
An appropriate crimping tool is needed to apply the ferrule
670/650 series and SAM600-IO IEC
1MRK 514 012-BEN K
10 Hitachi Power Grids
© 2017 - 2021 Hitachi Power Grids. All rights reserved.

to the wires. Use the bridge connector to jumper terminal
points in a connector.
Use ring-lugs to connect the wires to terminal points of a
connector of ring-lug type. Select ring-lugs suitable to wiring
dimension and size of fitting screw.
M2026-3 v4
(xx01000052.eps)
IEC01000052 V2 EN-US
Figure 14. Voltage connector, screw compression type
ANSI12000187-1-en.vsd
ANSI12000187 V1 EN-US
Figure 15. Voltage connector, ring-lug type
xx0100051.vsd
12
IEC01000051 V1 EN-US
Figure 16. Ferrules and bridge connector
1 Ferrules
2 Bridge connector
8. External resistor unit
External resistor unit SEMOD119678-5 v2
The high impedance resistor unit is used with the high
impedance differential protection. It is available as one
phase unit or three phase unit.
IEC03000048-LITEN V1 EN-US
Figure 17. High impedance resistor unit, three phase
670/650 series and SAM600-IO IEC
1MRK 514 012-BEN K
Hitachi Power Grids 11
© 2017 - 2021 Hitachi Power Grids. All rights reserved.

xx06000232.eps
Dimension
mm [inches]
[18.98]
[18.31]
[0.33]
[6.97]
[4.02] [1.48]
[0.79] [7.68]
IEC06000232 V2 EN-US
Figure 18. Dimension drawing of a one phase high impedance resistor unit
en06000234.eps
[inches]
[18.98]
[18.31]
[0.33]
[7.50]
[10.47]
[7.68]
[0.79]
[1.50]
IEC06000234 V2 EN-US
Figure 19. Dimension drawing of a three phase high impedance resistor unit
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 or
standard, enclose the plate with resistors with a protective
cover or install in a separate box.
670/650 series and SAM600-IO IEC
1MRK 514 012-BEN K
12 Hitachi Power Grids
© 2017 - 2021 Hitachi Power Grids. All rights reserved.

9. External current transformer unit
Summation CT SEMOD121170-4 v3
The external auxiliary summation current transformers are
used for the cost effective summation type differential
principle.
xx06000061.eps
IEC06000061 V1 EN-US
Figure 20. Summation CT
57 [2.24]
89 [3.5]
xx06000233.vsd
482.6 [19]
Dimension
mm [inches]
IEC06000233 V1 EN-US
Figure 21. Dimension drawing of summation current transformers
Distance between the center of the fixing holes is 465 mm [18.33].
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 or
standard, enclose the plate with transformers with a
protective cover or install in a separate box.
10. Interface converter
Galvanic interface G.703 resp G.703E1 M16035-3 v5
The external galvanic data communication converter
G.703/G.703E1 makes an optical-to-galvanic conversion for
connection to a multiplexer. These units are designed for 64
kbit/s resp 2Mbit/s operation. The converter is delivered
with 19” rack mounting accessories.
xx06000245.vsd
IEC06000245 V1 EN-US
Figure 22. Galvanic Converter
11. GPS antenna
Introduction SEMOD55674-5 v4
In order to receive GPS signals from the satellites orbiting
the earth a GPS antenna with applicable cable must be
used.
SEMOD55682-4 v4
The antenna with a console for mounting on a horizontal or
vertical flat surface or on an antenna mast. See figure 23
A suitable cable is available for ordering.
670/650 series and SAM600-IO IEC
1MRK 514 012-BEN K
Hitachi Power Grids 13
© 2017 - 2021 Hitachi Power Grids. All rights reserved.

xx04000155.vsd
1
2
4
3
5
6
7
IEC04000155 V2 EN-US
Figure 23. Antenna with console
where:
1 GPS antenna
2 TNC connector
3 Console, 78x150 mm
4 Mounting holes 5.5 mm
5 Tab for securing of antenna cable
6 Vertical mounting position
7 Horizontal mounting position
SEMOD55693-2 v5
Table 1. GPS – Antenna and cable
Function Value
Max antenna cable attenuation 26 db @ 1.6 GHz
Antenna cable impedance 50 ohm
Lightning protection Must be provided externally
Antenna cable connector SMA in receiver end
TNC in antenna end
Accuracy +/-1μs
12. Injection unit REX060
Injection unit REX060 GUID-76627CA5-9351-49BB-ABDE-81A939D12BF4 v3
The injection unit REX060 is used to inject voltage and
current signals to the stator and rotor circuits of the
generator or motor. 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.
For local operation, the REX060 unit is provided with a
control panel on the front.
670/650 series and SAM600-IO IEC
1MRK 514 012-BEN K
14 Hitachi Power Grids
© 2017 - 2021 Hitachi Power Grids. All rights reserved.

Local operation shall only be performed
according to the operation regulations set
up by the relevant operation authority of the
plant.
Mounting the injection unit REX060
GUID-264732AC-6C84-44E6-9F86-2065AD0B7D5B v3
The injection unit REX060 case size is 6U, 1/2 x 19”.
REX060 can be rack, wall or flush mounted in the same way
as the IED. For guidance, see instructions for rack
mounting, wall mounting or flush mounting the IED in this
manual.
REX060 shall be mounted close to the IED. It is
recommended that they are mounted in the same cubicle.
REX060 Front panel GUID-35437B83-47A9-4E2C-8D22-CCADC51BCC96 v1
IEC11000053-1-en.vsd
IEC11000053 V1 EN-US
Figure 24. REX060 front panel
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.
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.
13. Coupling capacitor unit REX061
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.
670/650 series and SAM600-IO IEC
1MRK 514 012-BEN K
Hitachi Power Grids 15
© 2017 - 2021 Hitachi Power Grids. All rights reserved.

Coupling capacitor unit REX061 GUID-59726B2B-0888-4CC1-8DEA-209F77CA5173 v5
X1 X2
IEC11000019-2-en.vsd
IEC11000019 V1 EN-US
Figure 25. Coupling capacitor unit REX061
670/650 series and SAM600-IO IEC
1MRK 514 012-BEN K
16 Hitachi Power Grids
© 2017 - 2021 Hitachi Power Grids. All rights reserved.

217 [8,54]
255 [10]
235 [9,25]
84 [3,3] 84 [3,3]
Ø 5,5 [0,22]
223 [8,78]
2 [0,079]
155 [6,1]
199 [7,83]
38 [1,5]
IEC11000037-2-en.vsd
IEC11000037 V2 EN-US
Figure 26. Measure and drilling plan
REX061 shall be mounted close to the generator in order to
limit the exposure of the field circuit. Alternatively it can be
located in the excitation cubicle.
The surface of REX061 unit may be
temporarily very hot due to heat
dissipation, up to about 50° C above the
ambient temperature. It must be installed
to get a open air convection and prevent
contact with combustible material to the
surface.
Example 1
14. Shunt resistor unit REX062
Shunt resistor unit REX062 GUID-90D6AF74-D9AC-49B8-B2CA-8A94E58ADEA5 v2
REX062 is required since the injection is done via a Signal
Injection Transformer.
670/650 series and SAM600-IO IEC
1MRK 514 012-BEN K
Hitachi Power Grids 17
© 2017 - 2021 Hitachi Power Grids. All rights reserved.

Shunt resistor unit REX062 GUID-184D9033-33F3-4F85-8847-E9FDC95C3C41 v5
X1
IEC11000038-1-en.vsd
IEC11000038 V1 EN-US
Figure 27. Shunt resistor unit REX062
670/650 series and SAM600-IO IEC
1MRK 514 012-BEN K
18 Hitachi Power Grids
© 2017 - 2021 Hitachi Power Grids. All rights reserved.

217 [8,54]
255 [10]
235 [9,25]
84 [3,3] 84 [3,3]
Ø 5,5 [0,22]
223 [8,78]
2 [0,079]
155 [6,1]
199 [7,83]
38 [1,5]
IEC11000039-2-en.vsd
IEC11000039 V2 EN-US
Figure 28. REX062 measures and drilling plan
REX062 shall be mounted close to the IED. It is
recommended that REX060 and REX062 are mounted in
the same cubicle as the IED.
The surface of REX062 unit may be
temporarily very hot due to heat
dissipation, up to about 65° C above the
ambient temperature. It must be installed
to get a open air convection and prevent
contact with combustible material to the
surface.
15. Voltage injection unit RXTTE4
Voltage injection unit RXTTE4 GUID-B786414A-A36A-4F3B-B2D5-F1EF9488DA0E v1
The COMBIFLEX voltage injection unit RXTTE4 is used for
rotor earth fault protection applications. The RXTTE 4
contains a voltage transformer with a primary winding for
connection to 120 or 230 V, 50 or 60 Hz supply voltage.
From the secondary winding of this internal voltage
transformer approximately 40 V AC is injected via series
capacitors and resistors into the rotor circuit. The injected
voltage and current are fed to one voltage input and one
current input on the IED.
In order to mount injection unit RXTTE4 some COMBIFLEX
accessories are required; RX4 terminal base, 10A and 20A
contact sockets and Crimping tool. See section "Related
documents" for more detailed information.
670/650 series and SAM600-IO IEC
1MRK 514 012-BEN K
Hitachi Power Grids 19
© 2017 - 2021 Hitachi Power Grids. All rights reserved.

R
C
221 222
421
428
324
325
321
313
314
315
IVT
44,7V
ICT
1:10
0V
120V 50/60Hz
230V 50/60Hz
RXTTE4
IEC13000028-1-en.vsd
IEC13000028 V1 EN-US
Figure 29. Voltage injection unit RXTTE4 with its main internal
components
Rotor earth fault protection can be
integrated in the IED among all other
protection functions typically required for
generator protection. How this is achieved
by using COMBIFLEX injection unit
RXTTE4 is described in Instruction
1MRG001910.
SEMOD175176-2 v5
Table 2. Rotor earth fault protection based on General current and voltage protection (CVGAPC) and RXTTE4
Function Range or value
For machines with:
• rated field voltage up to 350 V DC
• static exciter with rated supply
voltage up to
700 V 50/60 Hz
Supply voltage 120 or 230 V 50/60 Hz
Operate earth fault resistance
value
Approx. 1–20 kΩ
Influence of harmonics in the DC
field voltage
Negligible influence of 50 V, 150
Hz or 50 V, 300 Hz
Permitted leakage capacitance (1–5) μF
Permitted shaft earthing
resistance
Maximum 200 Ω
Protective resistor 220 Ω, 100 W, plate
(the height is 160 mm (6,2
inches) and width 135 mm (5,31
inches))
External resistor for RXTTE4 GUID-53080A2D-E836-4827-AD3D-8BD2C1E388D0 v2
The external resistor is used when either there is a need to
minimize physical exposure of the field circuit or when high
harmonic content of the total injection current can cause
overheating of the built-in RXTTE4 resistor. The external
resistor is delivered mounted on an insulated plate with
overall dimensions; (the height is 160 mm (6,2 inches) and
width 135 mm (5,31 inches)), suitable for wall mounting, see
figure 30. It actually consists of two resistors (R1 and R2)
which are on delivery connected in series. It is possible to
order two different types of the external resistor. The first
670/650 series and SAM600-IO IEC
1MRK 514 012-BEN K
20 Hitachi Power Grids
© 2017 - 2021 Hitachi Power Grids. All rights reserved.