Atec CT1000 User Manual
For 100A : 1A and 1000A : 1A AC Current Measurements
CT1000 Current Transformer
Specification
Frequency Range: 45Hz to 1kHz
Current Range: 100:1 ratio 10A to 120A rms
1000:1 ratio 100A to 1200A rms
Maximum Input Current: 1000A continuous
2000A for 1 hour
Accuracy (23°C ±5°C):
±0.2% of specified ratio
Phase Error (23°C ±5°C): Better than ±0.1° at 50Hz
Maximum Burden: 0.15VA for specified accuracy (equivalent to the input of
any Voltech power analyzer plus the test leads provided)
Dielectric Strength: 4kV at 50Hz for 1 minute
Temperature Range: Operating: -10°C to +50°C
Storage: -25°C to +85°C
The Voltech CT1000 is a toroidally wound AC current transformer that extends the range of Voltech
power analyzers such as the PM100, PM300 or PM3000A to 1200A rms. Close- tolerance current
ratios provide a measurement accuracy of better than 0.2%, making the CT1000 suitable for precision-grade measurements.
The CT1000 is housed in a fully insulated, shock-resistant casing with a core aperture that accommodates large-diameter cables or rectangular busbars. To minimize the risk of electrical shock, the
CT1000 has 4mm safety sockets for the leads connecting it to the power analyzer. In addition, a
novel over-voltage protection circuit limits the voltage on the output terminals to 50V peak, if the
transformer’s secondary winding is inadvertently open-circuited.
Voltech
CT1000 Current Transformer
VPN: 86-005/5
©
2003 Voltech Instruments. All rights reserved.
For 100A : 1A and 1000A : 1A AC Current Measurements
CT1000 Current Transformer
VPN: 86-005/5
©
2003 Voltech Instruments. All rights reserved.
While every care has been taken in compiling the information for this publication, Voltech Instruments cannot accept legal liability for any inaccuracies. Voltech Instruments has
an intensive program of design and development that may alter product specifications. Voltech Instruments reserves the right to alter specifications without notice and whenever
necessary to ensure optimum performance from its product range. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form, or by any
means, electronic, mechanical, photocopying, recording or otherwise, without prior permission of Voltech Instruments.
HI
LO
A
Voltech
Power Analyzer
HI
LO
V
Load
AC
Supply
L
N
CT1000
P2
P1
100:11000:1
Operation
z
Connect the CT1000 to your power
analyzer as shown in the diagram
above.
z
For primary circuit currents between
10A rms and 120A rms, use the output sockets on the CT1000 marked
100:1.
z
For primary circuit currents between
100A rms and 1200A rms, use the
sockets marked 1000:1.
When the CT1000 is used with a Voltech
power analyzer, the analyzer’s scaling
function can be used to automatically
scale the measurements by a factor of
100 or 1000, as appropriate.
71mm
85mm
95mm
45mm diameter
51mm x 30mm
64mm x 13mm
100mm
75mm
5.5mm
128mm
57mm
Voltech Instruments Ltd.
148 Sixth Street, Harwell International Business Centre
Harwell, Didcot, Oxon, OX11 0RA, UK
Tel: +44 (0)1235 834555
Fax: +44 (0)1235 835016
E-mail: sales@voltech.co.uk
Voltech Instruments Inc.
11637 Kelly Road, Suite 306
Fort Myers, FL 33908, USA
Tel: +1 239 437 0494
Fax: +1 239 437 3841
E-mail: sales@voltech.com
Voltech
www.voltech.com
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