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POWER TRANSFORMER | POWER TRANSFORMER

Summation CT

Category: QPS

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  • Description
  • Catalogue

Description

Summation CT

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To protect large electrical system from overload or to monitor large current loads by means of a metering instrument Current Transformer plays a very important role. It provides the necessary tools to capture the actual load current and reduces its values by means of transformation ration to a minimum of safe value. Therefore, selection of accurate and reliable current transformers are very crucial.

SES range of metering, measuring and protective current transformers are designed and manufactured to cater for wider range of applications. They are tested to IEC60044-1 2003-02 and are certified to ASTA & CE Mark Certified to UL.

Application guide to accuracy class
Accuracy ClassApplication
0.1Precision Testing or as a standard for testing other CTs
0.2Precision Metering
0.5General Tariff Metering
1.0Non Revenue measurement incl. power and energy
3.0General industrial measurement
5.0Approximate measurement
Table – limit of current error and phase displacement for measuring current transformer (class 0.1 to 1)
Accuracy Class± Percentage current (ratio) error at percentage of rated current shown below± Phase displacement at percentage of rated current shown below
MinutesCentiradians
 520100120520100120520100120
0.10.40.20.10.1158550.450.240.150.15
0.20.750.350.20.2301510100.90.450.30.3
0.51.50.750.50.5904530302.71.350.90.9
1.03.01.51.01.01809060605.42.71.81.8
Table – limit of current error and phase displacement for special application
Accuracy Class± Percentage current (ratio) error at percentage of rated current shown below± Phase displacement at percentage of rated current shown below
MinutesCentiradians
 152010012015201001201520100120
0.2s0.750.350.20.20.230151010100.90.450.30.30.3
0.5s1.50.750.50.50.590453030302.71.350.90.90.9
Table – limit of current error and phase displacement for measuring current transformer (class 3 to 5)
Accuracy Class± Percentage current (ratio) error at percentage of rated current shown below
50120
333
555
Limits of phase displacement are not specified for class 3 and class 5.
Table – limit of current error for protection current transformer
Accuracy ClassCurrent error at Rated primary current %Phase displacement at rated primary currentComposite error at rated accuracy limit primary current %
MinutesCentiradians
5P±1±60±1.85
10P±3––10

Specifications

Standard IEC60044-1 2003-02
Rated operational voltage (Un) 720V
Rated frequency 50 / 60Hz
Ambient temperature – 5 ~ 40°C
Operating humidity up to 95% relative humidity
Rated short time thermal current (lth) 50kA
Rated dynamic current (ldyn) 125kA peak
Dielectric strength 3kV r.m.s for 1 minute
Thermal class of insulation B
Tape Non-adhesive PVC tape flame retardant
Casing Non-flammable, polycarbonate self extinguishing ABS IPL
Accuracy class Measuring 0.2, 0.5, 1.3
Protection 5P, 10P, PX
Burden 1.5 to 15VA
Rated primary current ranging up to 6000A
Rated secondary current 5A or 1A

Burden Requirements

The Burden imposed on Current Transformer consist mainly of the following:-
a) The impedance of the relays of instruments.
b) The impedance of pilot wire between current transformer and relay or instruments.
c) The sum of (a) & (b) consitute the external burden required.

 

Enquiry / Ordering Information
1. When enquiring or ordering, please specify the following:
    a) Ration                                  : 30 / 5A to 6000 / 5A
                                                        20 / 1A to 6000 / 1A 
    b) Class                                     : 0.2, 0.5, 1, 3.5
    c) Burden (VA)                         : 2.5, 5, 10, 15, 20.
    d) ALF for Protective C/T       : P5, P10, P15, P20.

 

2. For non-standard sizes, please provide additional informations such as:-
    a) Internal Diameter required in mm(D)
b) Outer Diameter required in mm(OD)
c) Height required in mm (HT)
d) Rated secondary current if other than 5A

 

Safety Precautions!
The secondary terminals when not in used must be shorted before the primary supply is energised. Otherwise high voltage will develop across the secondary terminals causing damage to the current transformer and danger to life.

Note: All specification are subject to change without prior notice for product improvement.
Images, pictures, and illustrations used are for illustrative purposes only and the color printed in the brochure may differ from the actual product.

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High Bay LED Light | LED Supplier Malaysia | Power Transformer Manufacturer Malaysia
High Bay LED Light | LED Supplier Malaysia | Power Transformer Manufacturer Malaysia
  • Quick links

    Home
    About Us
    Our Brands & Products
    Facilities
    iLCS
    News & Events
    Contact Us

1300 88 2788
(National Toll Free)

+603 6279 2800

+603 6157 2722 / 2723

For career opportunities, please email to recruit.talent@success.com.my

Copyright © 2018 Success Electronics, All RIGHTS RESERVED.

The Success Electronics website is intended to provide information about the company, products and services that the company offers.
Success Electronics had made every effort to ensure that the contents of this site is updated and correct. Products specifications maybe
subject to change without prior notice for product improvement. Please contact our sales representatives for more information.

Best viewed using Google Chrome & Microsoft Edge.

Copyright © 2018 Success Electronics, All RIGHTS RESERVED.

The Success Electronics website is intended to provide information about the company, products and services that the company offers.
Success Electronics had made every effort to ensure that the contents of this site is updated and correct. Products specifications maybe subject to change without prior notice for product improvement. Please contact our sales representatives for more information.

Best viewed using Google Chrome & Microsoft Edge. 

Copyright © 2018 Success Electronics, All RIGHTS RESERVED.

The Success Electronics website is intended to provide information about the company, products and services that the company offers.
Success Electronics had made every effort to ensure that the contents of this site is updated and correct. Products specifications maybe subject to change without prior notice for product improvement. Please contact our sales representatives for more information.

Best viewed using Google Chrome & Microsoft Edge.