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ABO Current Transformer
The accuracy body. Class 0.2S at the top of the range makes ABO the family to specify where the reading is billed, and the transparent cover plus lead seal hole make the installation auditable years later.
- Primary current5 A to 5000 A
- Secondary current5 A, 1 A, 0.5 A, 0.25 A, 0.1 A
- Accuracy class3, 1, 0.5, 0.5S, 0.2, 0.2S
- Rated frequency50 / 60 Hz
- Rated test voltage3 kV AC (1 min)
- Rated voltage Um0.72 kV AC
- Safety factorFS 5
- Housing classSelf extinguishing V0
Product Overview
A new range of eight frames of perfectly designed plastic case current transformer with an advanced snap on body and high accuracy up to Class 0.2S. A humanised transparent cover and lead seal hole design make the CT very easy to identify after long term use and give good protection against electricity theft.
Published frames: ABO-B, ABO-30T, ABO-30, ABO-30C, ABO-40, ABO-60, ABO-85, ABO-100 and ABO-125.
Application Scenarios
- Current measurement, monitoring and protection for electrical wiring and equipment
- Current and power measurement for electric motors, lighting, air compressors, heating and ventilation systems, air conditioning equipment and automation control systems
- Current, power and energy monitoring devices
- Relay protection devices
Technical Features
- Built in hinged terminal cover
- Built in transparent cover for the name plate
- Wide accuracy range (3, 1, 0.5, 0.5S, 0.2, 0.2S) to meet worldwide requirements
- Lead seal hole for anti tamper revenue metering
- Primary current from 5 A to 5000 A
Specifications
Specification
| Parameter | Value |
|---|---|
| Rated frequency | 50 / 60 Hz |
| Rated test voltage | 3 kV AC (1 min) |
| Rated short time thermal current (Ith) | 60 In |
| Rated dynamic current (Idyn) | 2.5 Ith |
| Rated voltage (Um) | 0.72 kV AC |
| Continuous overload (Id) | 1.2 In |
| Operating temperature | -10 °C to 50 °C |
| Housing self extinguishing class | V0 |
| Safety factor | FS 5 |
| Secondary current | 5 A, 1 A, 0.5 A, 0.25 A, 0.1 A |
Questions Buyers Ask
What does Class 0.2S actually buy me?
The S classes hold their ratio error down to 1 % of rated primary current, not 5 %. On a feeder that idles most of the night and peaks in the morning, that is the difference between a billed reading you can defend and one you cannot.
Which secondary currents are available?
5 A, 1 A, 0.5 A, 0.25 A and 0.1 A. Low secondary currents are usually chosen for long secondary runs or for electronic meters with a low burden input.
Is the ABO body sealable?
Yes. The lead seal hole and the transparent name plate cover are part of the standard body.
Which frames are available?
ABO-B, ABO-30T, ABO-30, ABO-30C, ABO-40, ABO-60, ABO-85, ABO-100 and ABO-125, covering 5 A to 5000 A primary.
Compare With These Frames
Meter Current Transducer
Models 1856B05, 1876B05
System Three phase, and three phase four wire (1876B05)
Read Before You Specify
How To Calculate Current Transformer Burden
Burden is the single specification most often got wrong, and it is the one that quietly pushes a Class 0.5 transformer outside Class 0.5.
Buying GuideCurrent Transformer Accuracy Class Explained
Two numbers on a rating plate decide whether a reading can be billed. Here is what they guarantee, and where the guarantee stops.
ComparisonSplit Core Against Solid Core Current Transformers
One installs without an outage. The other is more accurate for the same size. The decision is almost always made by the installation, not the datasheet.
Get ABO Current Transformer Quoted Today
Send the ratio, accuracy class, burden and conductor size. An engineer confirms the frame and the price.