Bender LINETRAXX CTUB100 Series User manual

Manual ENCTUB100-Serie_D00362_05_M_XXEN/11.2023
Intended use
The AC/DC sensitive measuring current transformers
(type B) of the CTUB100 series convert system leakage
and fault currents into an evaluable measurement
signal. The devices are suitable for detecting fault
currents with smooth DC components. They consist
of a CTBC… measuring current transformer core and
a CTUB10… electronic module, which can be combined
to suit the application. The measuring current trans-
formers can be used in DC, AC, and 3(N)AC systems.
The measurement signal is evaluated using devices
of the RCMA4…, RCMS4…, RCMB4… or MRCDB4…
series, respectively EDS440/441-LAB series, to which
the measuring current transformers are connected.
General safety instructions
Part of the device documentation in addition to this
manual is the enclosed “Important safety instructions
for Bender products”.
Installation, connection and commissioning are to
be carried out by electrically skilled persons only!
It is essential to follow the existing safety instructions.
I Danger! indicates a high risk of danger that will
result in death or serious injury if not avoided.
I Caution! indicates a low-level risk that can
result in minor or moderate injury or damage
to property if not avoided.
i
This symbol refers to information that is
designed to help you make the best use of
the product.
Device features
• Multicolour LED for operation, fault and status
messages
• Electronic module can be exchanged without
mechanical separation of the primary conductors
• Extension/retrofitting or modification of functio-
nalities possible in case of changed monitoring
requirements
• Insensitive to load currents due to full magnetic
shield, can be used for high short-term system-
related load currents (for CTBC…Ponly).
• Monitoring of the connection to the measuring
current transformer
Overview: Possible combinations of evaluator,
electronic module and measuring current transformer core
Electronic modul Evaluator Meas. current transformer core Connecting cable Supply voltage
CTUB101
RCMA420 CTBC20(P)…60(P) CTX… (6 wires)
DC ±12V
The evaluator supplies the
measuring current transformer.
RCMA423 CTBC20(P)…210(P)
RCMS460/490* CTBC20(P)…210(P) CTX… (5/6 wires) DC ±12V
External power supply unit AN420
CTUB102 RCMS460/490 CTBC20(P)…210(P) CTXS… (4 wires) 24V
External power supply unit
CTUB104 EDS440/441-LAB CTBC20(P)…60(P)
* Only recommended for retrofit if an AN420 power supply unit is already
available. In this case, if the ready-made connecting cable CTX… is used, the
green plugs of the connecting cable (on the evaluator side) must be removed.
Afterwards, the individual conductors must be crimped and connected to the
RCMS460/490 or the AN420. In this case, the conductor“T”is not used
LINETRAXX® CTUB100 series
AC/DC sensitive measuring current transformers (type B)

2 CTUB100-Serie_D00362_05_M_XXEN/11.2023
LINETRAXX® CTUB100 series
d
b
f
c
a e
A
g
a
d
e
c
f
b
D
b
c
d
a
e
C
d
e
f
c
b
a
B
Dimensions (mm),
Tolerance: ±0.5 mm
Type a b c d e f g
ACTUB…-CTBC20(P) 75 83 37 ø 20 46 60,5 –
CTUB…-CTBC35(P) 97 130 47 ø 35 46 61 –
B CTUB…-CTBC60(P) 126 151 57 ø 60 56 78 –
CCTUB…-CTBC120(P) 188 225 96 ø 120 65 96 139
CTUB…-CTBC210(P) 302 339 153 ø 210 67 113 277
D CTUB…74 44 30 32 4.6 – –
Dimension diagrams
Mountings (mm)
a
b
c
CTBC20(P), CTBC35(P)
a
b
c
CTBC60(P)
a
b
c
CTBC120(P), CTBC210(P)
Typ a b c
CTBC20(P) 31.4 49 2 x ø 5.5
CTBC35(P) 49.8 49 2 x ø 5.5
CTBC60(P) 56 66 3 x ø 6.5
CTBC120(P) 103 81 4 x ø 6.5
CTBC210(P) 180 98 4 x ø 6.5
Assembly
Slide the electronic module onto the plug contacts of the measuring current transformer.
2
1
i
Avoid repeated plugging
and unplugging of the elec-
tronics (10 plugging cycles).

CTUB100-Serie_D00362_05_M_XXEN/11.2023 3
LINETRAXX® CTUB100 series
Device view
No. CTUB101 CTUB102 CTUB104 Note
1
Terminal
S1 (k) Connection measuring
current transformer core
2S2 (l)
3–Not in use
4–
5+12V 24V 24V
Supply voltage US
6GND
7-12V – –
8T – – Connection external test
9Test button T a) Offset calibration *
b) Internal functional test **
10 Combined LED Lights green normal operation
Flashes red device error ***
11
Potentio-
meter for
adjusting
the mea-
suring
range
– –
Response value RCM… Measuring range peak
I∆n ≤ 0.1 A 0…900 mA
0.1 A < I∆n ≤ 0.5 A 0…3.5 A
I∆n > 0.5 A 0…20 A
Select the measuring range according to the response value IΔn set on the RCM… evaluator.
If a larger measuring range is selected, the accuracy will decrease.
1
11
10 9
2 3 4
5678
* Test button T: Offset calibration
i
For measuring current transformer cores with
an internal diameter ≥ 120 mm, an offset
calibration should always be carried out be-
fore the first commissioning. Note that during
the offset calibration the system is switched off
and no current flows through the measuring
current transformer.
Offset calibration sequence
Action LED
1
Install the measuring current
transformer in the system,
assemble the electronic
module and the measuring
current transformer core, US
disconnected
off
2 Press and hold the“T”button off
Action LED
3a
Press and hold“T”, supply the
electronic module with supply
voltage US
lights red permanently
(not ready for operation)
3b flashes red slowly after
approx. 2 s (ready for calibration)
3c flashes red quickly after a total
of 5 s (calibration mode)
4 Start calibration: release“T”
when the LED flashes red quickly flashes red quickly
5 Calibration in progress flashes red quickly
6a Calibration successful, values
are accepted lights green permanently
6b
Calibration not successful.
Calibration value is not
accepted.The device is in an
error state. Either carry out
another offset measurement or
clear the error by switching the
device off and on again.
flashes red slowly

4 CTUB100-Serie_D00362_05_M_XXEN/11.2023
LINETRAXX® CTUB100 series
** Test button T:
Internal functional test
Press test button“T”for 5…10 s.
When the LED flashes green quickly, release the button.
Function test begins, varying measured values are
output.Their amplitude depends on the setting of the
detent potentiometer.
After completion of the function test, the LED lights
up green.
Possible cause of error Action
Connection between CTUB…
and CTBC… is not correct
Check connection or disconnect
CTUB… and CTBC… and reconnect
Error after offset calibration
(possibly system not switched
off and therefore DC residual
current too high)
Either carry out an offset calibration
again or clear the error by switching
the device off and on again. either
carry out an offset calibration again
or clear the error by switching the
device off and on again
Supply voltage US incorrect
(±12V or 24V)
Apply correct supply voltage Us
Possible cause of error Action
Detent potentiometer (11) is
not correctly engaged in one
position, but is between two
positions
Engage the detent potentiometer
correctly
Detent potentiometer is not
set correctly, evaluators display
error E.01 (CT error)
Set correct response value on
detent potentiometer
If the fault cannot be eliminated, contact Bender Service.
Wiring diagrams
I Danger of electrocution due to electric shock!
Touching live parts of the system carries the
risk of:
- An electric shock
- Damage to the electrical installation
- Destruction of the device
Before installing and connecting the device,
make sure that the installation has been
de-energised. Observe the rules for working on
electrical installations. Observe the information
on rated voltage and supply voltage specified
in the technical data!
i
Application in railway vehicles/
DIN EN 45545-2:2016!
If the horizontal or vertical distance to adjacent
components which do notmeet the require-
ments in table 2 of DIN EN 45545-2 is less than
20 mm orless than 200 mm respectively, they
are to be regarded as grouped. Refer to DIN EN
45545-2 chapter 4.3 Grouping rules.
i
The wires can be routed in any direction.
Connect the device according to the wiring diagram.
Please observe the technical data.
*** Device error
i
In the event of a device error, a high DC residual
current (in the level of the respective measu-
ring range end value) is additionally output so
that the error is visible at the evaluator.
5…10 s
t
2 s
5 s
varying measured value output
test endsrelease T
test begins
button Tpressed
press T
test
LED

CTUB100-Serie_D00362_05_M_XXEN/11.2023 5
LINETRAXX® CTUB100 series
Wiring diagram
CTX-…
CTBCx
CTUB101
+12V -12V TGND
S1(k)S2(l)
1 m
2,5 m
5 m
10 m
50 mm
250 mm
to the loads
CTXS-…
CTBCx
CTUB102
CTUB104
24V GNDk l
1 m
2,5 m
5 m
10 m
50 mm
250 mm
24V GND
S1(k)S2(l)
to the loads
RCMS460/490
(with CTUB102)
EDS440/441-LAB
(with CTUB104)
Ext. power supply
+
SPD
The use of a type 2 surge protection device (SPD) is mandatory due
to possible impulse voltages and in order to comply with normative
requirements.The surge protection device must be connected upstream
of the power supply unit on the supply side (not required for CTUB104).
Features of the surge protection device:
- Nominal discharge current In(8/20 μs): 20 kA
- Response time: 25 ns
- two-stage: 1 varistor + 1 spark gab
Alternatively, the power supply unit must be connected to a CAT II supply
without a surge protection device.
I Caution!
When using several CTUB100 measuring current
transformers, the power supply (24V, GND)
must not be daisy-chained from current trans-
former to current transformer but should be
star-shaped (e.g. using a potential distributor).

6 CTUB100-Serie_D00362_05_M_XXEN/11.2023
LINETRAXX® CTUB100 series
The cables must be aligned with the centre of the measuring
current transformer.
Installation instructions measuring current transformer
Technical data
Insulation coordination acc. to IEC 60664-1/IEC 60664-3
Definitions
Measuring circuit (IC1) .......................................................................
..............primary conductors routed through the current transformer
Secondary (IC2) ...................................... connections terminal block
Rated voltage.............................................................................800 V
Overvoltage category...................................................................... III
Area of application .................................................. ≤ 2000 m AMSL
Rated impulse voltage (IC1/IC2) ..................................................8 kV
Rated insulation voltage (reinforced insulation; IC1/IC2)
.................................................................................................. 800 V
Pollution degree ...............................................................................2
Supply voltage
CTUB101
Description ........................................................+12 V, GND, -12 V
Supply voltage Us............................................................DC ±12 V
Operating range of Us............................................................±2 %
Ripple Us...............................................................................≤ 1 %
Power consumption...........................................................≤ 2.5 W
CTUB102 and CTUB104
Description .....................................................................24 V, GND
Supply voltage Us.............................................................. DC 24 V
Operating range of Us..........................................................±20 %
Ripple Us...............................................................................≤ 1 %
Power consumption...........................................................≤ 2.5 W
Inrush current..............................................................1 A for 1 ms
Measuring circuit
Internal diameter measuring current transformer..............................
.................................................................... see dimension diagrams
Rated current I...........................RCM application / MRCD application
CTBC20 at IΔn ≥ 30 mA..................................................63 A / 40 A
CTBC20 at IΔn ≥ 300 mA................................................80 A / 63 A
CTBC20P ........................................................................80 A / 80 A
I Caution! Existing protective conductors and
low-resistance conductor loops must not be
routed through the measuring current trans-
former! Otherwise, high currents could be in-
duced into the conductor loop due to the AC/DC
sensitive measuring technology used.
I Caution! The connecting cable (supply, secondary
connection etc.) must not be routed directly past
the current transformer core, otherwise inter-
ference pulses may occur.
I Caution! The measuring current transformer
must be connected to the corresponding eval-
uator before the first use and before commis-
sioning of the monitored installation.
i
Do not route any shielded cables through the
measuring current transformer.
Pay attention to the following:
All current-carrying cables must be routed through the measuring
current transformer.
PE
L1
L2
L3
N
P1 (K): YE P2 (L): GY
Never route an existing protective conductor through the
measuring current transformer.
The primary conductors may only be bent from the specified
minimum distance. The minimum bending radius specified by the
manufacturers for the conductors used must be observed.
* Distance to 90° angle = 2 x outer diameter.
*
*

CTUB100-Serie_D00362_05_M_XXEN/11.2023 7
LINETRAXX® CTUB100 series
CTBC35 at IΔn ≥ 30 mA................................................125 A / 80 A
CTBC35 at IΔn ≥ 300 mA............................................160 A / 125 A
CTBC35P ....................................................................160 A / 160 A
CTBC60 at IΔn ≥ 30 mA..............................................200 A / 160 A
CTBC60 at IΔn ≥ 300 mA............................................400 A / 250 A
CTBC60P ....................................................................400 A / 320 A
CTBC120 at IΔn ≥ 100 mA..........................................400 A / 330 A
CTBC120P at IΔn ≥ 100 mA........................................630 A / 630 A
CTBC210 at IΔn ≥ 300 mA..........................................630 A / 630 A
CTBC210P at IΔn ≥ 100 mA........................................630 A / 630 A
CTBC210P at IΔn ≥ 300 mA....................................1000 A / 1000 A
Measurement accuracy................................. ±1 % of full scale value
Test winding................................................................................. yes
Rated continuous thermal current 1) Icth.....................................125 A
at UL applications ............................................................30 A
Rated short-time thermal current 1) Ith................................2.4 kA/1 s
Rated dynamic current 1) Idyn.............................................6 kA/40 ms
1) refers to the residual current
Possible response values (set on the evaluator)
CTBC20, CTBC20P.................................................... 10 mA…500 mA
CTBC35, CTBC35P, CTBC60, CTBC60P............................ 30 mA…10 A
CTBC120, CTBC120P, CTBC210P ................................. 100 mA…10 A
CTBC210..................................................................... 300 mA…10 A
Measuring ranges CTUB101, CTUB102
Measuring range 1 (I∆n ≤ 0.1 A) .......................... 0…900 mA (peak)
Measuring range 2 (0.1 A < I∆n ≤ 0.5 A).................. 0…3.5 A (peak)
Measuring range 3 (I∆n > 0.5 A) ............................... 0…20 A (peak)
Measuring range CTUB104
Measuring range.......................................................... DC 0…70 mA
Indication
Multicolour LED ........................................................... see pages 3/4
Output
Name .............................................................................. S1 (k), S2 (l)
Scaling.............................................................................400 mV/1 A
Max. voltage.............................................................................±10 V
Max. connector length................................................................10 m
Output resistance..................................................................... 172 Ω
Input
Name ................................................................ T (for CTUB101 only)
Current load .......................................................................< 300 mA
Environment/EMC
EMC (CTUB101, CTUB102)............................................... IEC 62020-1
EMC (CTUB104)............................................................ IEC 61326-2-4
Operating temperature ...................................................-25…70 °C
Classification of climatic conditions acc. to IEC 60721
Stationary use (IEC 60721-3-3) ..................................................3K22
Transport (IEC 60721-3-2) ..........................................................2K11
Long-term storage (IEC 60721-3-1) ...........................................1K22
Classification of mechanical conditions acc. to IEC 60721
Stationary use (IEC 60721-3-3)..................................................3M11
Transport (IEC 60721-3-2) .......................................................... 2M4
Long-term storage (IEC 60721-3-1) ......................................... 1M12
Connection
Max. connection length..............................................................10 m
Connecting cables are optionally available.
Use 60/75 °C copper lines only.
Terminal block
Manufacturer ...........................................................Phoenix Contact
Type ................................................................DFMC 1.5/4-ST-3.5 BK
The connection conditions of the manufacturer apply.
Connection properties
rigid ..............................................0.2…1.5 mm² (AWG 24…16)
flexible ................................................................... 0.2…1.5 mm²
with ferrule ....................................................... 0.25…0.75 mm²
Mounting CTBC…
Screw type
CTBC20…60(P)........................................... DIN EN ISO 7045 - M5
CTBC120…210(P) .......................................DIN EN ISO 7045 - M6
Washer type
CTBC20…60(P)..................................... DIN EN ISO 7089/7090 - 5
CTBC120…210(P) ................................ DIN EN ISO 7089/7090 - 6
Tightening torque
CTBC20…35 (P)................................................................. 0.6 Nm
CTBC60…210(P) .................................................................. 1 Nm
Other
Operating mode ...............................................continuous operation
Mounting ....................................................................... any position
Degree of protection, built-in components (DIN EN 60529).........IP40
Degree of protection, terminals (DIN EN 60529)..........................IP20
Flammability class .............................................................. UL94 V-0
Software ....................................................................................D591
Weight
CTUB10x-CTBC20 ..............................................................≤ 230 g
CTUB10x-CTBC20P.............................................................≤ 290 g
CTUB10x-CTBC35...............................................................≤ 310 g
CTUB10x-CTBC35P.............................................................≤ 390 g
CTUB10x-CTBC60...............................................................≤ 530 g
CTUB10x-CTBC60P.............................................................≤ 690 g
CTUB10x-CTBC120 ......................................................... ≤ 1460 g
CTUB10x-CTBC120P........................................................ ≤ 1820 g
CTUB10x-CTBC210.......................................................... ≤ 4290 g
CTUB10x-CTBC210P........................................................ ≤ 4940 g
The use of the power supply units listed at “Accessories” is
recommended. The use of a surge protection device is mandatory
for these power supply units (not required for CTUB104).

Bender GmbH & Co. KG
Londorfer Straße 65
35305 Grünberg
Germany
Tel.: [phone]
[e-mail]
www.bender.de
© Bender GmbH & Co. KG, Germany
Subject to change! The specified
standards take into account the edition
valid until 11/2023 unless otherwise
indicated.
Alle Rechte vorbehalten.
Nachdruck und Vervielfältigung nur mit
Genehmigung des Herausgebers.
All rights reserved.
Reprinting and duplicating only with
permission of the publisher.
LINETRAXX® CTUB100 series
Ordering details
USø CT´s Shielding Type Art. No.
Consistent with RCMA420 / RCMA423
DC
±12V
20 mm CTUB101-CTBC20 B78120010
CTUB101-CTBC20P B78120020
35 mm CTUB101-CTBC35 B78120012
CTUB101-CTBC35P B78120022
60 mm CTUB101-CTBC60 B78120014
CTUB101-CTBC60P B78120024
120 mm CTUB101-CTBC120 B78120016
CTUB101-CTBC120P B78120026
210 mm CTUB101-CTBC210 B78120018
CTUB101-CTBC210P B78120028
Consistent with RCMS460 / RCMS490
DC
24V
20 mm CTUB102-CTBC20 B78120011
CTUB102-CTBC20P B78120021
35 mm CTUB102-CTBC35 B78120013
CTUB102-CTBC35P B78120023
60 mm CTUB102-CTBC60 B78120015
CTUB102-CTBC60P B78120025
120 mm CTUB102-CTBC120 B78120017
CTUB102-CTBC120P B78120027
210 mm CTUB102-CTBC210 B78120019
CTUB102-CTBC210P B78120029
Consistent with EDS440 / EDS441
DC
24V
20 mm CTUB104-CTBC20P B78120033
35 mm CTUB104-CTBC35P B78120034
60 mm CTUB104-CTBC60P B78120035
Accessories
Voltage supply DC 24 V for CTUB102 and CTUB104
max. connected CT´s Type Art. No.
4 STEP-PS/1 AC/24 DC/0.5 B94053110
14 STEP-PS/1 AC/24 DC/1.75 B94053111
34 STEP-PS/1 AC/24 DC/4.2 B94053112
Connecting cables
Length (m) Connection to Name Art. No.
1
RCMA42x
CTX-100 B98110080
2.5 CTX-250 B98110081
5 CTX-500 B98110082
10 CTX-1000 B98110083
1
RCMS46x
EDS44x
CTXS-100 B98110090
2.5 CTXS-250 B98110091
5 CTXS-500 B98110092
10 CTXS-1000 B98110093
Replacement parts
Measuring current transformer cores
ø CT´s Type Art. No.
20 mm CTBC20 B98120001
CTBC20P B98120002
35 mm CTBC35 B98120003
CTBC35P B98120004
60 mm CTBC60 B98120005
CTBC60P B98120006
120 mm CTBC120 B98120007
CTBC120P B98120020
210 mm CTBC210 B98120008
CTBC210P B98120021
Electronic modules
UsType Art. No.
DC ±12V CTUB101 B78120050
DC 24V CTUB102 B78120051
DC 24V CTUB104 B78120053
Required terminals or connecting cables are optionally available.
Standards
The measuring current transformers of the CTUB10x
series comply with the requirements of the standard
DIN EN 45545-2.