TREND CT User Manual
Current Transformers
Data Sheet
CT
Current Transformers
Description
The IQ system range of split core current transformers are
designed for use in conjunction with the IQ system EM Series
Electricity Meters (not EM/RX) or any other suitable meter. They
are tape wrapped and are complete with 1 metre (1 yd) length
flying leads. These transformers are available in a number of
ratings to cater for all types of installation.
Physical
C
A
B
D
Features
• Class 1 accuracy
• High secondary coil VA ratings
• Standard CT ratios
• Split core to facilitate fitting
• Suitable for high/low primary currents
ledoM ABCD
3
mm23
"62.1
mm23
"62.1
mm2
"62.1
mm54
"77.1
mm54
"77.1
mm56
"65.2
56mm
"65.2
mm58
"53.3
mm58
"53.3
mm501
"1.4
S051/TC
S002/TC
S052/TC
S004/TC
S005/TC
S008/TC
S0001/TC
S0051/TC
S0061/TC
S0002/TC
mm88
"64.3
mm88
"64.3
mm88
"64.3
mm59
"7.3
mm59
"7.3
mm511
"35.4
mm511
"35.4
mm511
"35.4
mm511
"35.4
mm561
"5.6
mm21
"74.0
mm21
"74.0
mm21
"74.0
mm21
"74.0
mm
21
"74.0
mm21
"74.0
mm21
"74.0
mm21
"74.0
mm21
"74.0
mm21
"74.0
mm53
"83.1
mm53
"83.1
mm53
"83.1
mm03
"81.1
mm03
"81.1
mm52
"89.0
mm52
"8
9.0
mm03
"81.1
mm03
"81.1
mm03
"81.1
CT Current Transformers Data Sheet TA102139 Issue 2/C 11/10/07
1
CT Data Sheet
INSTALLATION
The CT range of current transformers are simple to install; the split core, makes them particularly useful where the mains cable is
already installed. There are, however several important points that must be remembered during the installation process:
Always power down before installation.
If power is flowing through the primary cable and there is no connection to the secondary cable, the secondary terminals
must be connected together and earthed (grounded) to prevent high voltages being induced across the CT terminals.
Below 720 V, the primary conductor requires no insulation, but above 720 V the primary conductor must have adequate
insulation.
CONNECTIONS
S1
P1 P2
SUPPLY
S2
DISPOSAL
WEEE Directive :
At the end of their useful life the packaging and
product should be disposed of by a suitable
Do not dispose of with normal household waste.
Do not burn.
recycling centre.
ORDER CODES
CT/[Rating]
e.g. CT/150S
LOAD
1
]gnitaR[
A051detaryramirp=S051
A002detaryramirp=S002
A052detaryramirp=S052
A004detaryramirp=S004
yramirp=S005
A005detar
A008detaryramirp=S008
A0001detaryramirp=S0001
A0051detaryramirp=S0051
A0061detaryramirp=S006
A0002detaryramirp=S0002
SPECIFICATIONS
Operating frequency :50 or 60 Hz
Manufacturing standards:IEC 185/BS7626, BSEN60044-1/IEC
Ambient limits :-30 °C to +80 °C (-22 °F to +176 °F)
Secondary rating :5 A
Core clip :pozidrive screw
Continuous current :1.2 x rated current
Rated system voltage :0.72/3kV
Insulation rating :3 kV for 1 minute
Lead :1 m of 1.5 mm (0.06”) PVC flexible cable
Accuracy class :1
Secondary VA rating :5 VA
Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies Sàrl, Ecublens, Route
du Bois 37,Switzerland by its Authorized Representative.
©Trend Control Systems Limited 2007. Trend Control Systems Limited reserves the right to revise this publication from time to
time and make changes to the content hereof without obligation to notify any person of such revisions or changes.
Trend Control Systems Limited
P.O. Box 34, Horsham, West Sussex, RH12 2YF, UK. Tel:+44 (0)1403 211888 Fax:+44 (0)1403 241608 www.trend-controls.com
Trend Control Systems USA
6670 185th Avenue NE, Redmond, Washington 98052, USA. Tel: (425)897-3900, Fax: (425)869-8445 www.trend-controls.com
2
60044-1
CT Current Transformers Data Sheet TA102139 Issue 2/C 11/10/07
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