Bender Linetraxx ctub100 series User manual

Manual ENCTUB100_series_D00362_01_M_XXEN/08.2020

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 leak-

age and fault currents into an evaluable measure-

ment 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 transformers can be used in DC, AC, and 3(N)

AC systems. The measurement signal is evaluated

using devices of the RCMA420/423, RCMS460/490,

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 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.

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 me-

chanical separation of the primary conductors

• Extension/retrofitting or modification of functio-

nalities possible in case of changed monitoring re-

quirements

• Insensitive to load currents due to full magnetic

shield, can be used for high short-term system-re-

lated load currents (for CTBC…P only).

• 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 Meas.

current transformer.

RCMA423 CTBC20(P)…210(P)

RCMS460/490* CTBC20(P)…210(P) CTX... (5/6 wires) DC ±12V

ext. 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 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

2 CTUB100_series_D00362_01_M_XXEN/08.2020

LINETRAXX® CTUB100 series

Dimension diagrams

Mountings (mm)

Assembly

Slide the electronic module onto the plug contacts of the measuring current transformer.

a e

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 –

BCTUB…-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

DCTUB 74 44 30 32 4.6 – –

CTBC20(P), CTBC35(P)

CTBC60(P)

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 5.5

LINETRAXX® CTUB100 series

CTUB100_series_D00362_01_M_XXEN/08.2020 3

Device view

No. CTUB101 CTUB102 CTUB104 Note

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 buttonT a) Internal functional test: press test button "T" for 5…10 s

b) Oset calibration 1)

10 Combined LED

lights green normal operation

ashes red device error; USis connected, no connection to CTBC.

Check the connection between CTUB and CTBC, if necessary, snap on the electronic module

again. If LED still ashes red: Contact Service please.

11 Potentiometer for adjusting the

measuring range

Response value RCM…Measuring range rms Measuring range peak

I∆n ≤ 0.1 A 0…450 mA 0…900 mA

0.1 A < I∆n ≤ 0.5 A 0…0.75 A 0…3.5 A

I∆n > 0.5 A 0…10 A 0…20 A

Select measuring range rms/peak according to the response value IΔn set on the RCM… evaluator. If a

larger measuring range is selected, the resolution deteriorates.With CTUB104 no selection of the measu-

ring range is necessary, the potentiometer is unused.

Offset calibration

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. For safety reasons, oﬀset

calibration cannot be performed if a current > 15 mA ﬂows through the measuring current transformer

during oﬀset calibration.

Action LED

1Install the measuring current trans-

former in the system

o

Assemble the electronic module and the

measuring current transformer core

lights green

3Disconnect the electronic module from

the supply voltage

o

4a Press and hold the "T" button o

4b Press and hold "T", supply the electronic

module with supply voltage US

lights red permanently

(not ready for operation)

10 9

2 3 4

5678

Action LED

4c Press and hold "T", supply the electronic

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 permanently

8Calibration nished, normal operating

status

4 CTUB100_series_D00362_01_M_XXEN/08.2020

LINETRAXX® CTUB100 series

The use of a type 2 surge protection device (SPD) is mandatory due to pos-

sible impulse voltages and in order to comply with normative requirements.

The surge protection device must be connected upstream of the power sup-

ply 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 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 sup-

ply voltage specified in the technical data!

Connect the device according to the wiring diagram. Please observe the technical data.

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

LINETRAXX® CTUB100 series

CTUB100_series_D00362_01_M_XXEN/08.2020 5

Installation instructions measuring current

transformer

Do not route any shielded cables through the

measuring current transformer.

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, second-

ary connection etc.) must not be routed directly

past the current transformer core, otherwise

interference pulses may occur.

Caution! The measuring current transformer must be

connected to the corresponding evaluator before the

first use and before commissioning of the monitored

installation. Pay attention to the following:

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 / 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 on page 3

Rated current In..................................................................................................................................

CTBC20 at IΔn = 30 mA.....................................................40 A

CTBC20 at IΔn = 300 mA...................................................63 A

CTBC20P...........................................................................80 A

CTBC35 at IΔn = 30 mA.....................................................80 A

CTBC35 at IΔn = 300 mA.................................................125 A

CTBC35P.........................................................................160 A

CTBC60 at IΔn = 30 mA...................................................160 A

CTBC60 at IΔn = 300 mA.................................................250 A

CTBC60P.........................................................................320 A

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 * outer diameter

The cables must be aligned with the centre of the measuring

current transformer.

All current-carrying cables must be routed through the mea-

suring current transformer.

6 CTUB100_series_D00362_01_M_XXEN/08.2020

LINETRAXX® CTUB100 series

Connection

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 mandato-

ry for these power supply units (not required for CTUB104).

CTBC120 at IΔn = 100 mA...............................................330 A

CTBC120P at IΔn = 100 mA.............................................630 A

CTBC210 at IΔn = 300 mA...............................................630 A

CTBC210P at IΔn = 100 mA.............................................630 A

CTBC210P at 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

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 ........................................................... table p. 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 (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

LINETRAXX® CTUB100 series

CTUB100_series_D00362_01_M_XXEN/08.2020 7

Ordering details

USø CT´s Shielding Type Art. No.

Consistent with RCMA420 / RCMA423

±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

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

24V

20 mm

CTUB104-CTBC20P B78120033

35 mm

CTUB104-CTBC35P

B78120034

60 mm CTUB104-CTBC60P B78120035

Accessories

Voltage supply

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

STEP-PS/1 AC/24 DC/4.2

B94053112

Connecting cables

Length (m) Connection to Name Art. No.

RCMA42x

CTX-100

B98110080

2.5 CTX-250 B98110081

5 CTX-500 B98110082

CTX-1000

B98110083

RCMS46x

EDS44x

CTXS-100 B98110090

2.5 CTXS-250 B98110091

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.

LINETRAXX® CTUB100 series

Nachdruck und Vervielfältigung

nur mit Genehmigung des Herausgebers.

Bender GmbH & Co. KG

Postfach 1161 • 35301 Grünberg • Deutschland

Londorfer Str. 65 • 35305 Grünberg • Deutschland

Tel.: +49 6401 807-0 • Fax: +49 6401 807-259

E-Mail: [email protected] • www.bender.de

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.: +49 6401 807-0 • Fax: +49 6401 807-259

E-Mail: [email protected] • www.bender.de

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