Bender LINETRAXX CTBC series User manual

Intended use
The AC/DC sensitive measuring current transformer
cores of the CTBC series can only be used in combi-
nation with one of the follwing devices:
• MRCDB300 series (see manual D00343)
• CTUB100 series (see manual D00362)
• RCMB300 series (see manual D00372)
The measuring current transformer cores convert
system leakage and fault currents into a signal to be
processed by the devices mentioned above. The
measuring current transformers can be used in DC,
AC, and 3(N)AC systems. The devices are suitable for
detecting fault currents with smooth DC compo-
nents. CTBC…P are insensitive to load currents due
to full magnetic shield, can be used for high short-
term system-related load currents.
General safety instructions
Part of the device documentation in addition to this
manual is the enclosed „Important safety instructi-
ons 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 This symbol indicates a high risk of danger
that will result in death or serious injury if
not avoided.
I This symbol 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 de-
signed to help you make the best use of the
product.
Dimension diagrams
Dimensions (mm),tolerance: ±0.5 mm
CTBC a b c d e f g h i j k l
20(P) 75 45 83 40 ø 20 ø 60 46 37 6 60.5 – –
35(P) 94 54 100 58.4 ø 35 ø 79.5 45 46 5 60.5 – –
60(P) 126 70 137 84.5 ø 60 ø 111 55 57 16 78.5 23 1.5
120(P) – – 211 139 ø 120 ø 188 66 96 7.5 96 – 17
210(P) – – 324 277 ø 201 ø 302 68 153 7.5 113 – 26
d
k
c
f
e
b
g
i
lj
h
a
CTUB10…-CTBC60(P)
d
c
f
e
g
i
l
j
h
CTUB10…-CTBC120/210(P)
d
c
f
e
bg
ij
h
a
CTUB10…-CTBC20(P)/CTBC35(P)
CTBC-series_D00336_02_M_XXEN/09.2020
LINETRAXX® CTBC series
AC/DC sensitive measuring current
transformer cores

i
In combination with devices of the MRCDB300 series, an offset calibration is mandatory at the final instal-
lation site before the initial commissioning.
For measuring current transformer cores with an internal diameter ≥ 120 mm, an offset calibration should
always be carried out before the first commissioning. Note that during the offset calibration the system is
switched off and no current flows through the measuring current transformer.
Mountings
Assembly
Slide the electronic module onto the plug contacts of the measuring current transformer.
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 5.5
2
1
Action LED
4c Press and hold "T", supply the elec-
tronic module with supply voltage US
ashes red slowly
(ready for calibration)
4d ashes red quickly
(calibration mode)
5 Start calibration: release "T"
6 Calibration in progress ashes red quickly
7 Calibration successful, values are
accepted
lights green perma-
nently
8Calibration nished, normal operat-
ing status
Action LED
1Install the measuring current
transformer in the system
o
2
Assemble the electronic module and
the measuring current transformer
core
lights green (CTUB10x,
RCMB300 series)
lights red (MRCDB300
seires)
3Disconnect the electronic module
from the supply voltage
o
4a Press and hold the "T" button o
4b Press and hold "T", supply the elec-
tronic module with supply voltage US
lights red permanently
(not ready for operation)
2 CTBC-series_D00336_02_M_XXEN/09.2020
LINETRAXX® CTBC series

Installation instructions of measuring CT
I Caution! Device damage due to high induction
currents! High currents can be induced into the
conductor loop due to the AC/DC sensitive meas-
uring technology used. Do not route protective
conductors and low-resistance conductor loops
through the measuring current transformer!
I Caution!Device damage due to interference
pulses! The connecting cable (supply, analogue
interface ...) must not be routed directly past the
current transformer core.
I Caution!Risk of injury due to accessible live
conductors! The measuring current transform-
er must be connected to the corresponding
evaluator before the first use and before com-
missioning of the monitored system.
i
Application in railway vehicles / DIN EN
45545-2:2016: If the horizontal or vertical dis-
tance to adjacent components which do not
meet the requirements in table 2 of DIN EN
45545-2 is less than 20 mm or less than 200 mm
respectively, they are to be regarded as grouped.
Refer to DIN EN 45545-2 chapter 4.3 Grouping
rules.
i
Do not route any shielded cables through the
measuring current transformer.
The measuring current transformer must be connec-
ted to the corresponding evaluator before the first
use and before commissioning of the monitored sys-
tem.
All current-carrying cables must be routed through the meas-
uring current transformer. Never route an existing protective
conductor through the measuring curre nt transformer.
PE
L1
L2
L3
N
The cables must be aligned with the centre of 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 outside diameter
Technical data
Measuring circuit
Internal diameter measuring CTs ......... see dimension diagrams
Rated current I.............................................................................
CTBC20 when IΔn = 30 mA ...............................................40 A
CTBC20 when IΔn = 300 mA .............................................63 A
CTBC20P...........................................................................80 A
CTBC35 when IΔn = 30 mA ...............................................80 A
CTBC35 when IΔn = 300 mA ...........................................125 A
CTBC35P.........................................................................160 A
CTBC60 when IΔn = 30 mA .............................................160 A
CTBC60 when IΔn = 300 mA ...........................................250 A
CTBC60P.........................................................................320 A
CTBC120 when IΔn = 100 mA .........................................330 A
CTBC120P when IΔn = 100 mA .......................................630 A
CTBC210 when IΔn = 300 mA .........................................630 A
CTBC210P when IΔn = 100 mA .......................................630 A
CTBC210P when IΔn = 300 mA .....................................1000 A
Measurement accuracy.......................................................±1 %
Test winding.......................................................................... yes
Rated continuous thermal current Icth ...................................30 A
Rated short-time thermal current Ith............................ 2.4 kA/1 s
Rated dynamic current Idyn .........................................6 kA/40 ms
LINETRAXX® CTBC series
CTBC-series_D00336_02_M_XXEN/09.2020 3

Environment/EMC
EMC.............................................................. IEC 62020: 2005-11
Operating temperature ............................................ -25…70 °C
Classification of climatic conditions acc. to IEC 60721 (ex-
cept condensation 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
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
The device may only be connected directly to electronic modules
of the CTUB100, RCMB300 and MRCDB300 series.
Mounting CTBC…
Screw type
CTBC20…60(P)................................. DIN EN ISO 7045 - M5x
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
CTBC20 ......................................................................≤ 160 g
CTBC20P.....................................................................≤ 220 g
CTBC35.......................................................................≤ 240 g
CTBC35P.....................................................................≤ 320 g
CTBC60.......................................................................≤ 460 g
CTBC60P.....................................................................≤ 620 g
CTBC120 ................................................................. ≤ 1390 g
CTBC120P................................................................ ≤ 1750 g
CTBC210.................................................................. ≤ 4220 g
CTBC210P................................................................ ≤ 4870 g
Spare 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
LINETRAXX® CTBC series
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Postfach 1161 • 35301 Grünberg • Deutschland
Londorfer Str. 65 • 35305 Grünberg • Deutschland
Tel.: [phone] • Fax: [phone]
E-Mail: [email protected] • www.bender.de
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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
CTBC-series_D00336_02_M_XXEN/09.2020/pdf/©BenderGmbH&Co.KG,Germany–Subjecttochange!Thespeciedstandardstakeintoaccounttheeditionvaliduntil09/2020unlessotherwiseindicated.