Product Introduction
This integrated ct pt field calibration tester measures current/voltage transformer ratios (1%-200%) and phase differences in compliance with national standards, while also supporting direct transformer ratio and polarity tests. Featuring automatic linear-adjustment DC/AC power supply, advanced digital processing, and a stable measurement circuit, it ensures exceptional accuracy and reliability. The user-friendly 800×600 LCD touchscreen with WINCE system offers intuitive English operation, wiring guidance, and data storage, making it ideal for field and laboratory transformer testing.
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Thông số sản phẩm
(1)
| CT ratio range | 5A/5A~25000A/5A (5A/1A~5000A/1A) turn ratio error ± 0.2% |
| Error measurement range | 5A/5A～5000A/5A（5A/1A～5000A/1A） |
| Accuracy range of the tested current transformer | 1.0, 0.5, 0.5S, 0.2, and 0.2S |
| CT error accuracy | 0.02 level |
(2)
| PT ratio range | Full range measurement (electromagnetic type) ± 0.2% |
| Error measurement range | Primary voltage:3-220kV/(non-standard primary voltage is also acceptable) Secondary voltage: 3kV/100V、3kV//100V/；6kV/100V、6kV//100V/；6.3kV/100V、 6.3kV//100v/；10kV/100V、10kV//100V/；10.5kV/100V、10.5kV//100V/；13.8kV/100V、13.8kV//100V/；15kV/100V、15kV//100v/；15.75kV/100V 、15.75kV//100V/；18kV/100V、18kV//100V/ ；20kV/100v、 20kV//100v/；35kV/100V、35kV//100V/；66kV//100v/； 110kV//100V/；220kV//100V/ |
| Power factor | 0.0-1.0 |
| PT error accuracy | 0.05 level |
| DC resistance | 0.0-0.1 Ω ± 3% |
| 0.1-50Ω ±1% | |
| Nhiệt độ môi trường | 0-40℃ |
| Power consumption of the whole machine | 30W (static) and 150W (working) |
| Nhiệt độ môi trường | 0-40℃ |
| Độ ẩm môi trường | <85% at 25℃ |
| Whole machine weight | 6.0Kg |
| Whole machine volume | 472mm × 355mm × 168mm |
Product functions
1. Integrated CT/PT Calibration: A single instrument performs error testing for both current and voltage transformers, eliminating the need for multiple separate devices.
2. Wide Measurement Ranges: It measures CT ratios from 5A/5A to 25000A/5A (or 5A/1A to 5000A/1A) and PT ratios across a full range (electromagnetic type). It can measure any percentage of ratio and angle difference between 1% and 200% of rated current.
3. High Accuracy: CT error accuracy is 0.02 class, and PT error accuracy is 0.05 class. The built-in standard voltage transformer has an accuracy of 0.02 class, equivalent to a 0.05S class CT.
4. Comprehensive Testing Capabilities: It measures transformer ratio and polarity, DC resistance (0.0-0.1Ω ±3%, 0.1-50Ω ±1%), and power factor (0.0-1.0). It can also detect the polarity and transformation ratio of unknown transformers.
5. Intelligent Wiring Detection: It intelligently judges external wiring status, indicating wiring errors, transformation ratio errors, and polarity errors. It automatically rounds test data and determines if it exceeds tolerance.
6. Data Management: Various measurement data can be stored on-site, and data can be transferred to a PC via standard USB interface for report processing and certificate printing.
7. User-Friendly Interface: Features an 800×600 large LCD with full Chinese interface (English available), color touch screen operation, and a user-friendly human-machine interface with wiring and operation prompts.
Tính năng sản phẩm
1. Integrated Solution
Employs small-signal measurement technology for complete CT/PT error testing
Eliminates need for external standard transformers, boosters, or load boxes
Built-in 0.02-class reference standard (equivalent to 0.05S-class accuracy)
2. Advanced Testing Capabilities
Wide measurement range: 1%-200% (including S-class CTs)
Measures ratio/phase errors at any load point (upper/lower limits)
Automatic polarity/ratio detection for known & unknown transformers
Complies with national standards for VT testing (20%-120% range)
3. Smart Operation
800×600 LCD with full Chinese interface
Auto-wiring detection with error alerts
On-site data storage & USB data export
Shock-resistant casing (weight <6kg; 472×355×168mm)
4. Efficient Workflow
Near-power-frequency testing minimizes interference
Instant pass/fail determination
One-click report generation per national standards
Product Advantages
1. True On-Site Calibration: The integrated ct pt field calibration tester factory uses a small-signal measurement principle, eliminating the need for standard CTs, standard PTs, current boosters, voltage boosters, load boxes, voltage regulation control boxes, or high-current wires. This greatly reduces work intensity and improves efficiency.
2. Compact and Portable: Weighing only 6.0kg with dimensions of 472×355×168mm, the instrument is truly portable and easy to carry for field work.
3. High Accuracy and Stability: The high-precision, automatic linear adjustment DC and AC power supply and high-speed digital processing module ensure accurate and stable measurements.
4. Comprehensive Functionality: It integrates CT and PT error testing, ratio and polarity measurement, DC resistance measurement, and intelligent wiring detection into a single unit.
5. Anti-Interference: It uses a power supply close to the power frequency for testing to prevent on-site power frequency electromagnetic radiation and series interference.
6. Efficient Data Management: On-site data storage and USB transfer to PC for report generation and certificate printing simplify documentation and record-keeping.
Applications:
1. Substation Commissioning: Used for on-site calibration of CTs and PTs during the commissioning of new substations or after major equipment installation.
2. Routine Maintenance and Preventive Testing: Used by utilities for periodic calibration of CTs and PTs to ensure accuracy and compliance with standards.
3. Power Metering: Used for verifying the accuracy of CTs and PTs in metering circuits to ensure fair and accurate billing.
4. Protection System Verification: Used for verifying CT and PT performance in protection circuits to ensure correct operation of protective relays.
5. Manufacturing Quality Control: Used by CT and PT manufacturers for factory acceptance testing and quality control.
6. Laboratory Calibration: Used in accredited laboratories for calibrating instrument transformers.
Frequently Asked Questions
Q: What is the primary purpose of the Integrated Current and Voltage Transformer Field Calibration Instrument?
A: It is used for on-site calibration of current transformers (CTs) and voltage transformers (PTs), measuring their ratio and angle errors to verify accuracy and compliance with national standards.
Q: How does it handle on-site interference?
A: It uses a power supply close to the power frequency for testing to prevent on-site power frequency electromagnetic radiation and series interference, ensuring accurate measurements in substation environments.
Q: Does the integrated CT/PT on-site calibrator require connection to a burden box?
A: The integrated ct pt field calibration tester manufacturer features an integrated design that reduces dependence on external test equipment, thereby simplifying on-site test wiring and operation procedures.
Q: What is the biggest advantage of the integrated CT/PT on-site calibrator?
A: Its main advantages are integration, portability, and simple operation. By integrating multiple CT/PT testing functions into a single device, it effectively reduces the number of on-site equipment items and wiring work, improving testing efficiency.
Q: Can the integrated CT/PT on-site calibrator test CTs with large ratios?
A: Yes. The integrated ct pt field calibration tester supplier has a wide CT ratio test range, covering up to 25000A/5A, and can meet the testing requirements of CTs with various capacities.
Wuhan UHV Power Technology Co., Ltd. is a professional manufacturer and supplier of high-voltage power testing equipment in China. With our own factory and over 10 years of manufacturing experience, We specialize in a wide range of high-voltage testing equipment., and other high-voltage testing equipment. As a direct manufacturer, we provide high-quality products, competitive factory-direct prices, and professional technical support. OEM and customized solutions are also available to meet different customer requirements. We offer a one-year warranty and reliable after-sales service, and are committed to building long-term partnerships with customers worldwide.
