SN4800 Series Transformer Characteristic Comprehensive Test Set:
Comprehensive and practical functions, high reliability, easy operation, measurement, compact and lightweight, can easily and conveniently perform volt-ampere characteristic, ratio, and polarity tests on transformers.
Functions and Features
1. Fully automatic testing: Simply set test parameters such as current step, automatically collect transformer volt-ampere characteristic data and automatically plot the excitation characteristic curve; automatically test and calculate CT ratio.
2. One-key jog dial: Utilizes "one-key jog dial" (rotary mouse) technology for more convenient operation.
3. Built-in adjustable voltage (current) source with ample power: Only requires a single 220V power input. The built-in segmented adjustable voltage source allows selection of different output voltages for transformers with different test voltages, providing finer voltage adjustment, eliminating current jumps, and improving measurement accuracy. The built-in booster has a maximum output voltage of up to 1250V (Type A: 2000V, Type B: 2500V), the built-in adjustable current source can output up to 800A, and the external current booster can output up to 2000A.
4. User-friendly interface: Uses an imported all-weather large-screen graphic LCD, clearly visible under various strong or weak light conditions, with a full Chinese menu interface, cursor prompts for operation, real-time display of test data and curves, and auto-scaling of curve coordinates for clearer reading.
5. Advanced data processing: Built-in super-large capacity memory, can store 6400 sets of test data; can be uploaded to a PC via RS232 or USB interface. The bundled software developed by our company can automatically generate editable typical test reports, and can calculate, analyze, and compare 5% and 10% error curves for CTs of 1A and 5A, facilitating technical management and archiving.
6. Adopts intelligent fuzzy control voltage regulation: Automatically identifies non-test segments and quickly returns to zero; significantly shortens test time and improves work efficiency.
7. Built-in high-speed micro printer: Can print CT volt-ampere characteristic test reports, excitation characteristic curves, and CT ratio test reports in real time.
8. Polarity discrimination uses the DC method recommended by regulations, with audible and visual indication of results, reliable and intuitive.
9. Comprehensive protection functions: This unit has complete overcurrent and overvoltage protection functions, and can automatically adjust the overcurrent and overvoltage protection values based on test parameter settings to ensure the safety of the equipment under test.
Main Technical Parameters
Test power input: 220V/30A
Volt-ampere characteristic test: Output 0～250V 20A (max)
Output 0～750V 10A (max)
(Type A) Output 0～2000V 3A (max)
(Type B) Output 0～2500V 2A (max)
Voltage measurement: Class 0.2 (resolution 0.1V)
Current measurement: Class 0.2 (resolution 0.01A)
Ratio test: Measurement range 1～6500.0/5 (1) Class 0.5
Built-in current booster output 800A
External current booster output 1000A-2000A (optional)
Primary current measurement 800A-2000A Class 0.2
Secondary current measurement 9.99A Class 0.2
Main unit output to current booster max 10KVA
Working power: AC220V±10% 50Hz
Dimensions: 400×300×280 (mm3)
Weight: approx. 22Kg
