Bender Linetraxx CTUB100 Series User manual

LINETRAXX® CTUB100 series
AC/DC sensitive measuring current transformers (type B)
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 de-
vices are suitable for detecting fault currents with smooth
DC components. They consist of a CTBC… measuring cur-
rent transformer core and a CTUB10… electronic module,
which can be combined to suit the application. The meas-
uring current transformers can be used in DC, AC, and
3(N)AC systems. The measurement signal is evaluated us-
ing devices of the RCMA420/423, RCMS460/490, respec-
tively EDS440/441-LAB series, to which the measuring
current transformers are connected.
General safety instructions
Part of the device documentation in addition to this ma-
nual 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 es-
sential 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 proper-
ty 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 retrot if an AN420 power supply unit is already avai-
lable. 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
CTUB100-series_D00362_02_M_XXEN / 08.2021 Manual EN

Dimension diagrams
Mountings (mm)
d
b
g
f
k
c
a e
A
g
a
d
e
c
f
b
D
d
a
e
b
c
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 – –
a
b
c
CTBC20(P), CTBC35(P)
a
b
c
CTBC60(P)
a
b
c
CTBC120(P) …CTBC210(P)
Type 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 electronics
(10 plugging cycles).
2 CTUB100-series_D00362_02_M_XXEN / 08.2021

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) Oset calibration *
b) Internal functional test **
10 Combined LED Lights green normal operation
Flashes red device error ***
11
Potenti-
ometer for
adjusting
the
measuring
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
Action LED
3a
Press and hold "T", supply the electronic
module with supply voltage US
lights red permanently (not
ready for operation)
3b ashes red slowly after ap-
prox. 2s (ready for calibration)
3c ashes red quickly after a
total of 5 s (calibration mode)
4 Start calibration: release "T" when the
LED ashes red quickly ashes red quickly
5 Calibration in progress ashes 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
oset measurement or clear the error by
switching the device o and on again.
ashes red slowly
* Test button T: Offset calibration
i
For measuring current transformer cores with an
internal diameter ≥ 120 mm, an offset calibra-
tion should always be carried out before the first
commissioning. Note that during the offset cali-
bration the system is switched off and no current
flows through the measuring current transformer.
Offset calibration sequence
Action LED
1
Install the measuring current transform-
er in the system, assemble the electronic
module and the measuring current
transformer core, US disconnected
o
2 Press and hold the "T" button o
CTUB100-series_D00362_02_M_XXEN / 08.2021 3

** Test button T:
Internal functional test
Press test button "T" for 5…10 s
When the LED ashes 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.
*** Device error
i
In the event of a device error, a high DC residual
current (in the level of the respective measuring
range end value) is additionally output so that
the error is visible at the evaluator.
Possible cause of error Action
Connection between CTUB… and
CTBC… is not correct
Check connection or disconnect
CTUB… and CTBC… and reconnect
Error after oset calibration
(possibly system not switched o
and therefore DC residual current
too high)
Either carry out an oset calibration
again or clear the error by switching
the device o and on again. either
carry out an oset calibration again or
clear the error by switching the device
o 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.
5…10 s t
2 s
5 s
varying measured value output
test endsrelease T
test begins
button Tpressed
press T
test
LED
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
The wires can be routed in any direction.
Connect the device according to the wiring diagram.
Please observe the technical data.
4 CTUB100-series_D00362_02_M_XXEN / 08.2021

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.
Wiring diagram
RCMS460/490
(with CTUB102)
EDS440/441-LAB
(with CTUB104)
Ext. power supply
+
SPD
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
CTUB100-series_D00362_02_M_XXEN / 08.2021 5

I Caution!Existing protective conductors and low-re-
sistance conductor loops must not be routed
through the measuring current transformer!
Otherwise, high currents could be induced into the
conductor loop due to the AC/DC sensitive measur-
ing technology used.
I Caution! The connecting cable (supply, secondary
connection etc.) must not be routed directly past
the current transformer core, otherwise interference
pulses may occur.
I Caution! The measuring current transformer
must be connected to the corresponding evalua-
tor before the first use and before commissio-
ning of the monitored installation.
i
Do not route any shielded cables through the mea-
suring current transformer.
Pay attention to the following:
Installation instructions measuring current transformer
PE
L1
L2
L3
N
P1 (K): YE P2 (L): GY
Never route an existing protective conductor through the measur-
ing current transformer.
All current-carrying cables must be routed 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.
*
*
The cables must be aligned with the centre of the 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
6 CTUB100-series_D00362_02_M_XXEN / 08.2021

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
CTCB120…210(P) ............................................... DIN EN ISO 7045 - M6
Washer type
CTBC20…60(P)............................................. DIN EN ISO 7089/7090 - 5
CTCB120…210(P) ........................................ DIN EN ISO 7089/7090 - 6
Tightening torque
CTBC20…35 (P)......................................................................... 0.6 Nm
CTCB60…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).
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 Icth .................................................. 30 A
Rated short-time thermal current 1) Ith .........................................2.4 kA/1 s
Rated dynamic current 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, CTUBC60, 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: 2005-11
EMC (CTUB104).................................................................... IEC 61326-2-4
Operating temperature ............................................................-25…70 °C
Classification of climatic conditions acc. to IEC 60721 (except con-
densation and formation of ice)
Stationary use (IEC 60721-3-3) .......................................................... 3K24
Transport (IEC 60721-3-2) .................................................................. 2K11
Long-term storage (IEC 60721-3-1) ................................................... 1K22
CTUB100-series_D00362_02_M_XXEN / 08.2021 7

Ordering details
U
S
ø 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 24V 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
U
s
Type Art. No.
DC ±12V CTUB101 B78120050
DC 24V
CTUB102
B78120051
DC 24V
CTUB104
B78120053
Required terminals or connecting cables are optionally available.
Alle Rechte vorbehalten.
Nachdruck und Vervielfältigung
nur mit Genehmigung des Herausgebers.
Bender GmbH & Co. KG
Postfach 1161 • 35301 Grünberg • Deutschland
Londorfer Str. 65 • 35305 Grünberg • Deutschland
Tel.: [phone] • Fax: [phone]
E-Mail: [email protected] • www.bender.de
All rights reserved.
Reprinting and duplicating
only with permission of the publisher.
Bender GmbH & Co. KG
PO Box 1161 • 35301 Grünberg • Germany
Londorfer Str. 65 • 35305 Grünberg • Germany
Tel.: [phone] • Fax: [phone]
E-Mail: [email protected] • www.bender.de