ORSI-D Short-circuit Impedance Tester

ORSI-D Short-circuit Impedance Tester

I. Product introduction

The low-voltage short-circuit impedance test is the most direct method for determining whether a transformer's windings have been deformed as a result of exposure to short-circuit current during operation, or as a result of mechanical impact during transportation or installation. This test is of significant importance for determining whether a transformer is suitable for commissioning into service and serves as one of the criteria for deciding whether a transformer requires disassembly inspection.

The ORSI-D Short-Circuit Impedance Tester is a next-generation short-circuit impedance testing instrument recently developed by our company, designed for measuring the low-voltage short-circuit impedance of transformers rated at 35 kV or higher, whether under field or laboratory conditions.

II. Features

    ● With a single wiring connection, the device can automatically perform both three-phase and single-phase measurements and display the results directly;

● The test power supply can be configured as either an internal or external power source:

● The use of high-speed A/D synchronous sampling technology ensures the accuracy and repeatability of the calculated transformer impedance test parameters;

● Equipped with a 320×240 large LCD display featuring Chinese menu prompts for user-friendly operation;

● Built-in high-capacity non-volatile memory: capable of storing up to 2,000 measurement data points;

● Built-in high-precision real-time clock function: enables date and time calibration;

● Built-in high-speed micro thermal printer: enables printing of measurement and historical data;

● Built-in USB controller: Allows testing data to be saved to a USB flash drive and permanently stored on a PC;

● Equipped with a comprehensive protection circuit, offering strong anti-interference capability and high reliability.

III. Technical parameters

● measuring range:

  Voltage: 20V–400V

  Current: 0.5 A – 10 

● accuracy:

  Voltage, Current: Class 0.2

  Impedance: cosφ ≥ 0.2 (Class 0.5)

  Power factor: cosφ ≥ 0.2 (Class 0.5)

● Ambient temperature: -10°C to 50°C

● Environmental humidity: ≤85% RH

● Operating power supply: AC 220 V ±10%,50 ±1 Hz

● Dimensions: 350 mm × 270 mm × 170 mm

● Instrument weight: 8 kg

IV. Warranty period & after-sale service

● The warranty period for the products supplied by the supplier is 12 months from the date of product acceptance or 15 months from the date of the last piece of equipment arrival, whichever comes first. Within the warranty period, the supplier shall provide free services to the purchaser; After the warranty period, the supplier will only charge a cost fee for the expenses incurred in repairing the equipment.
● All products come with lifetime maintenance services.

V. Company profile