GTB AC/DC Hipot Test Set (Dry Type)

• 1、The dry test transformer is small in size、in light weight、compact structure、maintenance-free

• 2、Simple and intuitive wiring, easy to use

• 3、Good insulation reliability，good-looking appearance

• 4、The dry test transformer has over current protection function

• 1、AC and DC High-Voltage Output: It serves as a power supply for electrical strength tests, providing high-voltage AC output. When used with an optional high-voltage silicon stack, it can also supply DC high voltage for testing, offering flexibility for different test requirements.

• 2、Overload and Short Circuit Protection: The test set includes built-in overload and short circuit protection, enhancing the safety of the equipment and the test object.

• 3、Wide Range of Models: The GTB series is available in numerous models with varying capacities and output voltages. product page lists specifications for models from 1.5kVA/50kV up to 30kVA/120kV and beyond, with different input voltage options to suit various applications.

• 4、Simple and Intuitive Wiring: The system is designed for straightforward connections, making it easy to set up and use in different testing configurations.

• 5、Compatibility with Accessories: It is designed to work with a control box, automatic protection devices, sphere gaps, and micro-ammeter accessories to form a complete testing system.

• 1、Compact and Lightweight: The dry-type design results in a small volume, light weight, and compact structure. This completely changes the old, bulky, heavy nature of traditional test transformers, making it much easier to handle and transport.

• 2、Maintenance-Free: As a dry-type unit, it does not require oil filling or regular oil maintenance, saving time and eliminating the risk of oil leaks.

• 3、Excellent for Field Testing: Its portability and ease of use make the GTB series especially suitable for field testing in power systems, factories, and mines, where moving heavy equipment is a significant challenge.

• 4、Reliable Insulation and Appearance: The dry-type construction provides good insulation reliability, and the units have a good-looking appearance.

• 5、Improved Efficiency: The lightweight design and quick setup significantly improve testing efficiency compared to using older, heavier equipment.

• 1、Power Utilities and Substations: Used for high-voltage withstand testing of electrical equipment such as transformers, circuit breakers, cables, and insulators during commissioning, maintenance, and fault diagnosis.

• 2、Electrical Equipment Manufacturing: Employed by manufacturers for factory quality control and final testing of electrical products, cables, and insulation materials to ensure they meet dielectric strength specifications.

• 3、Testing Laboratories: Used in high-voltage laboratories for research, type testing, and compliance testing of various electrical apparatus.

• 4、Industrial Maintenance: Utilized by large industrial plants (e.g., in mining, petrochemicals, steel) for routine insulation testing of motors, generators, switchgear, and other electrical assets.

• 1、What is a dry-type test transformer, and what are its advantages?
  Dry-type test transformer uses air as its insulating medium instead of oil. Its main advantages are that it is much smaller and lighter than oil-filled units of similar rating, it is maintenance-free, and there is no risk of oil leakage. This makes it ideal for field testing where portability is key.
• 2、What safety features does this test set include?
  The GTB series includes built-in overload and short-circuit protection. When used with a matching control box or console, it also typically provides features like zero-start protection, overcurrent protection, and emergency stop functions for safe operation.
• 3、How does this compare to an oil-immersed test transformer?
  The key difference is the insulation and portability. A dry-type unit like the GTB is lighter, more compact, and maintenance-free, making it excellent for field use and short-duty tests. An oil-immersed unit is typically larger and heavier but may have a higher continuous-duty rating and better cooling for long-duration tests, often found in fixed laboratory installations. The GTB is specifically designed to overcome the shortcomings of old, bulky oil-filled transformers.

Enterprise products in strict accordance with international and national standards and rules of industry production, through the national, provincial and municipal electric power research institute and electric power authorities detection, measuring center, fully passed the ISO9001 international quality management system certification, the licence for manufacturing measuring instruments of the People's Republic of China, GB/T19001-2016 quality management system requirements, GB/T24001-2016 environmental management system requirements, GB/T45001-2020 occupational health and safety management system requirements.

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