YOKOGAWA CT1000 User manual

User's
Manual
The AC/DC Current Sensors (CT1000, CT200, CT60) are products of Yokogawa Test & Measurement
Corporation. Contact information of Yokogawa offices worldwide is provided on the following sheet.
Document No. Description
PIM 113-01Z2 List of worldwide contacts
Safety Precautions
Make sure to observe the following safety precautions when handling the current sensor. YOKOGAWA assumes
no liability for the customer’s failure to comply with these safety precautions. Before you use the current sensor,
read the measuring instrument’s manual to fully acquaint yourself with its specifications and handling.
The following symbols are used on this instrument.
Warning: handle with care. Refer to the user’s manual or service manual. This symbol
appears on dangerous locations on the instrument which require special instructions for
proper handling or use. The same symbol appears in the corresponding place in the manual
to identify those instructions.
Risk of electric shock
Hot surface
Make sure to observe the following safety precautions to prevent electric shock, personal
injury, or damage to the instrument.
WARNING
• Beware of electric shock.
• Do not perform measurement if the case is damaged.
• Do not operate the device with wet hands, in a rainy or humid environment, or if any
water droplets are visible on it.
• Condensation may appear if sudden changes in temperature occur. If this happens, let
the device acclimatize to the new temperatures for at least one hour, then refrain from
using the device until confirming that there is no condensation.
• Do not disassemble the device.
The device should be disassembled by qualified personnel only.
• Use the correct power supply.
Ensure that the source voltage matches the voltage of the power supply before turning
the power ON.
• Do not use uninsulated measurement conductors or cables.
Use conductors or cables with reinforced insulation.
• Make sure that the surface temperature of measurement conductors is within the
device's operating temperature range.
• Although it is well-insulated, do not touch the device or secondary output cable
while voltage is being applied to the primary conductor.
• Connect the secondary signal output before supplying power to the device.
• Do not disconnect the secondary output while power is being supplied to the device
to prevent electric shock or damage to the instrument.
• Do not apply primary current before supplying power to the device to prevent
electric shock or damage to the instrument.
• Do not input excessive current as malfunction or damage may result.
• Do not allow vibrations to disturb the device after it has been set in place as damage
may result.
The following symbols are used in this manual.
Improper handling or use can lead to injury to the user or damage to the instrument.
This symbol appears on the instrument to indicate that the user must refer to the
user’s manual for special instructions. The same symbol appears in the corresponding
place in the user’s manual to identify those instructions. In the manual, the symbol is
used in conjunction with the word “WARNING” or “CAUTION.”
WARNING Calls attention to actions or conditions that could cause serious or fatal injury to the
user, and precautions that can be taken to prevent such occurrences.
CAUTION Calls attention to actions or conditions that could cause light injury to the user or
damage to the instrument or the user’s data, and precautions that can be taken to
prevent such occurrences.
Note Calls attention to information that is important for proper operation of the instrument.
1. Description
This device is a current output type current sensor with a 1500: 1(for CT1000) 1000: 1(for CT200)
or 600: 1(for CT60) current transformation ratio that performs transformation on the primary current.
After familiarizing yourself with the performance and functions of this device, you will be able to use
it in conjunction with measuring instruments from YOKOGAWA.
2. Configuration
The current sensor consists of the following parts.
Standard parts
1. Current sensor
2. User’s manual
IM CT1000-01EN CT1000, CT200, CT60
AC/DC Current Sensor
User’s Manual
This manual. This manual explains the
handling precautions, basic usage, and
specifications of the probe.
IM CT1000-01JA CT1000, CT200, CT60
AC/DC Current Sensor
The Japanese version of the above manual
IM 00C01C01-01Z1 Safety Instruction Manual Safety manual (European languages)
The “EN” and “JA” in the manual numbers are the language code.
Contact information of Yokogawa offices worldwide is provided on the following sheet.
PIM 113-01Z2 Inquiries List of worldwide contacts
Thank you for purchasing the AC/DC Current Sensor (Model CT1000,CT200,CT60). To ensure correct
use, please read this manual thoroughly before beginning operation.
Please familiarize yourself with the functions and characteristics of the probe prior
to operation.After reading this manual, keep it in a safe place.
IM CT1000-01EN
11th Edition
IM CT1000-01EN 1/2
Accessories (Sold Separately)
The optional accessories below are available for purchase separately. Use the accessories
specified in this manual. Moreover, use the accessories of this product only with Yokogawa products
that specify them as accessories.
Output connector B8200JQ
Load resistors B8200JR
B8200JQ consists of a connector and attachment screws for connecting to the instrument. A
separate cable is required for making the connection.
3. Part Names
Secondary connector
Primary conductor feed-through hole
Conductor guide
CT60CT200
1
5
6
9
CT1000
Front
Top
Front
Top
(two M5)
Attachment screw holes
(two M5)
Attachment screw holes
1 5
6 9
Pin assignment
Figure 1. Names of Parts and Pin Assignments
Primary conductor
feed-through hole
Conductor guide
Secondary connector
Pin assignment
Pin No.
1
2
3
4
5
6
7
8
9
Signal
Output return
[Do not connect]
[Do not connect]
0 V Power Supply Input
–15 V Power Supply Input
Secondary Signal Output
[Do not connect]
[Do not connect]
+15 V Power Supply Input
Signal allocation of secondary
connector
(four M5)
Attachment screw holes
(two M6)
Attachment screw holes
(four M4)
Attachment screw holes
4. Operating Procedure
CAUTION
Ensure that the current flowing to the conductor of the object to be measured is within the measuring
range. If the current exceeds the measuring range, the device may overheat and get damaged.
1.
Connect the secondary connector on the device to the current input terminal on the measuring
instrument, and connect to 0 V (common) and ±15 V on the power supply.
2.
Set up the measuring instrument and power supply to match the specifications of the current
transducer. Carefully read the user’s manuals for your measuring instrument and power supply
to perform the correct procedure for making the connections.
Secondary connector
of the current sensor
4
5
9
6
Power supply
0 V(common)
–15 V
+15 V
Rb Current input
terminal
Measuring instrument
Rb: Load resistor*
Figure 2. Connection Example
* Make sure that the total load resistance
including measuring instrument's internal
resistance and external load resistance (Rb)
is within the specification.
1
3.
Insert the primary conductor into the primary conductor feed-through hole on the device.
Make sure that the direction of current flow matches the arrow on the device. Figure 3 is for the
examples in use with CT200 and CT60. The same idea is applied to CT1000 as well.
Correct
Conductor
Primary current
Incorrect
Using a magnetic
-shielded conductor
Using two parallel
conductors
Current flows in
both directions
Direction of current
Figure 3. Insertion of a Conductor
4.
Check that power is being supplied to the device, and then apply the primary current.
5.
Read the measured values. The following calculation is used to determine the current flowing
through the primary conductor.
Example: When the output current from the device's secondary connector (pin 6) is 100 mA.
CT1000: 100 mA x 1500 = 150 A.
CT200: 100 mA x 1000 = 100 A.
CT60: 100 mA x 600 = 60 A.
Note
• If the NORMAL OPERATION LED is off even when power is being supplied to the device, the
protection function may be activated. Immediately stop the primary current.
• Only pass conductors through the primary conductor feed-through hole if the current that you
want to measure is flowing through the conductors and their current directions are the same.
Correct measurements cannot be taken if you pass conductors with magnetic shielding or
conductors whose current directions are opposite of each other through the feed-through hole.
• Make sure the primary wiring and secondary wiring do not interfere with each other. The
secondary wiring may be affected by the primary wiring because it uses a very small current.
Make the secondary wiring as short as possible and maintain its distance from the primary
wiring, without allowing them to be parallel to each other. We recommend AWG24 or higher for
the secondary wiring material. Twisted-pair may be better than shielded cable for measurement
applications such as inverters.
•The device outputs current. Connect the device to a measuring instrument with current input.
To connect the device to a measuring instrument with voltage input, use an appropriate shunt
resistor to connect the device to the voltage input terminals.
•Configure your setup so that the load resistance of the measuring instrument connected to the
secondary signal output is within the specification range.
•Correct measurements may not be possible in places where there is an extremely strong
external magnetic field besides the magnetic fields produced by the primary current of the
object to be measured or where there is a strong electric field.
CT1000, CT200, CT60
AC/DC Current Sensor
11th Edition: March 2022 (YMI). All Rights Reserved. Copyright © 2010 Yokogawa Test & Measurement Corporation. Printed in Japan
*IM CT1000-01EN/11*

5. Specifications
Item Model
CT1000 CT200 CT60
Current Rating DC: 0 to 1000 A DC: 0 to 200 A DC: 0 to 60 A
AC: 1000 Apeak AC: 200 Apeak AC: 60 Apeak
Output Current Primary rated current
at 1000 A is 666.6 mA.
Primary rated current
at 200 A is 200.0 mA.
Primary rated current
at 60 A is 100.0 mA.
Current Transformation Ratio 1500: 1 1000: 1 600: 1
Direction of Current Per the arrow printed on the main unit.
Accuracy DC: ±(0.05 % of reading+30 μA)
50/60 Hz: ±(0.05 % of reading+30 μA) sine wave
Standard Conditions
23±5 °C
Common mode voltage: 0 V
Conductor: φ25 mm; length,300 mm or more; straight
Accuracy warranty period 12 months
Effect of Position of Conductor Add ±(0.01 % of reading)
Measurement Band (-3dB) DC to 300 kHz DC to 500 kHz DC to 800 kHz
Temperature Coefficient In the 10 to 18 °C, 28 to 50 °C ranges: 0.01 %/°C
Max. Allowable Continuous Input 1000 Apeak 200 Apeak 60 Apeak
Derating of Max. Allowable Input For the maximum allowable continuous current with respect to
frequency, see figure 4.
Instantaneous Max. Allowable Input
(0.1 sec. or less, reference value)
4500 Apeak 1000 Apeak 300 Apeak
Maximum Rated Voltage 1000 Vrms CAT III*1
Load Resistance 2.5 to 5 Ω 0 to 30 Ω 0 to 20 Ω
Operating
environment
Temperature 10 to 50 °C
Humidity 20 to 80 %RH (no condensation)
Altitude 2000 m or less
Location for use Indoor use
Storage
environment
Temperature -20 to 60 °C
Humidity 20 to 80 % RH (No condensation)
Altitude 3000 m or less
External Dimensions Approx. 128(W) x
106(H) x 60(D) mm
Approx. 93(W) x 77(H) x 38(D) mm
(excluding the connector and conductor guide)
Diameter of Primary Current Hole φ30 mm φ26 mm
Secondary Connector D-Sub 9 pin
Weight Approx. 0.8 kg. Approx. 0.3 kg.
Power Supply Voltage ±(15 V ± 5 %)
Maximum Rated Power Consumption 30 VA 11 VA 7 VA
Current Consumption (at Power
Supply Voltage)
Approx. (150 mA +
output current)
Approx. (80 mA + output current)
Recommended fastening torque
•Flat mounting M5×4 steel screws
3.7 N•m
M4×4 steel screws
2.8 N•m
•Straight mounting M6×2 steel screws
4.4 N•m
M5×2 steel screws
3.7 N•m
Safety standard Compliant standards
EN61010-1, Pollution degree 2*2
Emissions Compliant standards
EN61326-1 ClassB, EN55011 ClassB, Group1
EMC Regulatory Arrangement in Australia and New Zealand
EN55011 ClassB, Group1
Immunity Compliant standards
EN61326-1 Table 2 (for industrial locations)
Environmental standards*3 EU RoHS Directive compliant
Accessories User’s manual: 1 pc.
Opt. Accessories (Sold
Separately)
•D-Sub 9 pin connector (plug, part number B8200JQ): 1 pc.
• Load resistor (four 10-Ω resistors, part number B8200JR, accuracy
of resistance value ±0.1%, temp. coefficient 25 ppm/°C): 1 group.
Example: To apply a 2.5 Ω load resistance, connect the four 10 Ω
resistors in parallel.
*1 This instrument is a measurement category (CAT) III product. Do not use it for measurement
category IV measurements.
Measurement category O applies to measurement of other types of circuits that are not directly
connected to a main powersource.
Measurement Category II applies to electrical equipment that is powered through a fixed installation,
such as a wall outlet wired to a distribution board, and to measurement performed on such wiring.
Measurement category III applies to measurement of facility circuits, such as distribution boards
and circuit breakers.
Measurement category IV applies to measurement of power source circuits, such as entrance
cables to buildings and cablesystems, for low-voltage installations.
*2 Pollution Degree applies to the degree of adhesion of a solid, liquid, or gas that deteriorates
withstand voltage or surface resistivity. Pollution Degree 2 applies to normal indoor atmospheres
(with only non-conductive pollution).
*3 For conformity to environmental regulations and/or standards other than EU, contact your nearest
YOKOGAWA office (PIM 113-01Z2).
Frequency [Hz]Frequency [Hz]
Maximum Allowable Input Current [Arms]
1
10
100
1 10 100 1000 10000 100000 100000
1000
CT1000, CT200
CT1000
CT200
Figure 4. Derating of Primary Current by Frequency
CT60
Frequency [Hz]
Maximum Allowable Input Current [Arms]
1
10
100
1 10 100 1000 10000 100000 100000
IM CT1000-01EN 2/2
2-Ф5.5 hole
80
93
76.6
20.3
38
77.7
38.9
Ф26
104
90
128
60
30
109
85
106
4 - Ф5.5 hole
67
54
2 - Ф6.5 hole
Ф30
47
31 34
67 4-Ф4.5 hole
CT200,CT60
Unit: mm
CT1000
Figure 5. External Dimensions
Unless otherwise specified,
tolerances are ±3 %
(however, tolerances are
±0.3 mm when below 10 mm).
6. Servicing
If you encounter any problems during use, or if the device does not appear to be operating normally,
contact your nearest YOKOGAWA dealer.
7. Warranty
If you experience a breakdown in the device due to faulty manufacturing or accidents during shipping,
contact your nearest YOKOGAWA dealer.
8. Appendix
Waste Electrical and Electronic Equipment (WEEE)
(EU WEEE Directive valid only in the EEA* and UK WEEE Regulation in the UK)
This product complies with the WEEE marking requirement. This marking indicates
that you must not discard this electrical/electronic product in domestic household
waste. When disposing of products in the EEA or UK, contact your local Yokogawa
office in the EEA or UK respectively.
* EEA: European Economic Area
Authorized Representative in the EEA
Yokogawa Europe B. V. is Authorized Representative of Yokogawa Test & Measurement Corporation
in the EEA for this Product. To contact Yokogawa Europe B. V., see the separate list of worldwide
contacts, PIM 113-01Z2.
Disposing of the Instrument
When disposing of the instrument, follow the laws and ordinances of your country or region.
Compliance with the Radio Waves Act (Republic of Korea)
This product complies with the Radio Waves Act (Republic of Korea).
Note the following when using the product in Republic of Korea.
 이기기는가정용 (B 급 )전자파적합기기입니다
The product is for home use (Class B) and meets the electromagnetic compatibility requirements.
Registration No: KCC-REM-IMY-EEN314
Equipment Name: Current Sensor
Trade Name: Yokogawa Test & Measurement Corporation
Manufacturer: Yokogawa Test & Measurement Corporation
Country of Origin: Bulgaria
产品中有毒有害物质或元素的名称及含量产品中有毒有害物质或元素的名称及含量
This manual is valid only in China.
部件名称 有毒有害物质或元素
铅（Pb） 汞（Hg） 镉（Cd） 六价铬
（Cr(VI)）
多溴联苯
（PBB）
多溴二苯醚
（PBDE）
框架（塑料） ○ ○ ○ ○ ○ ○
框架（金属） ○ ○ ○ ○ ○ ○
线路板 ASSY ×○ ○ ○ ○ ○
○ ：
表示该部件的所有均质材料中的有毒有害物质的含量均在 GB/T 26572 标准中所规定的限量以下。
× ： 表示该有毒有害物质至少在该部件的某一均质材料中的含量超出 GB/T 26572 标准规定的限量要求。
环保使用期限环保使用期限
This section is valid in China only.
该标识适用于 SJ/T 11364 中所述 , 在中华人民共和国销售的电子电气产品的环保
使用期限。只要您遵守该产品相关的安全及使用注意事项 , 在自制造日起算的年
限内 , 则不会因产品中有害物质泄漏或突发变异 , 而造成对环境的污染或对人体
及财产产生恶劣影响。
注）该年数为“环保使用期限”, 并非产品的质量保证期。零件更换的推荐周期 ,
请参照使用说明书。