DDG Primary Current Injection Test Set
Product Introduction
Primary Current Injection Tester is the necessary equipment in places of strong current. It is widely used in power plants, power distribution stations, electrical manufacturers, research institutes and other departments. The equipment has the characters of short-term or intermittent system, small size, light weight and easy maintenance and so on.
Product Characteristics
1. The high-current generator is equipped with dual ammeters for multi-range current monitoring.
2. It features a freely adjustable autotransformer for precise output control.
3. With status indicator lights and push-button operation, the device offers simple and intuitive control.
4. Its integrated yet separable structure ensures both durability and ease of transportation.
Technical parameters（Special parameters can be customized）
| Type specification | Capacity(kVA) | elementary | secondary | boundary dimension(mm)、length×relax×high-priced | weightkg | structural style | ||
| V1 | A1 | V2 | A2 | |||||
| DDG-500 | 3 | 220 | 15 | 6 | 500 | 430×338×550 | 48 | an organic whole |
| DDG-1000 | 6 | 220 | 27 | 6 | 1000 | 500×380×600 | 80 | an organic whole |
| DDG-2500 | 15 | 380 | 39.5 | 6 | 2500 | 600×430×790 | 145 | an organic whole |
| DDG-4000 | 24 | 380 | 63 | 6 | 4000 | 640×450×820 | 180 | an organic whole/fission |
| DDG-5000 | 30 | 380 | 79 | 6 | 5000 | 600×430×900、300×500×500 | 145、135 | fission |
| DDG-6000 | 36 | 380 | 95 | 6 | 6000 | 600×430×900、300×500×500 | 150、140 | fission |
| DDG-8000 | 48 | 380 | 126 | 6 | 8000 | 600×450×950、350×550×550 | 180 | fission |
| DDG-10000 | 60 | 380 | 158 | 6 | 10000 | 800×600×1100、380×550×600 | 200 | fission |
Function and Features
1. Output characteristics: It can output high current for a long time or continuously output maximum value for a short time.
2. Testing scope: It can test thermal relays, switches, transformers, AC contactors, protection circuits, etc., directly measuring the transformation ratio and polarity of CT, as well as the switching action time.
3. Safety: It has grounding detection function and zero return detection function. The test can only be carried out after the grounding and zero return are determined, which is safe and reliable. When the output current exceeds the set upper limit, the motor automatically returns to zero and an audible and visual alarm occurs.
4. Adaptability: Adopting a combination of hardware and software anti-interference technology, with stable performance, strong anti-interference ability, and adaptability to harsh electromagnetic environments. Can be used in harsh environments such as high temperature, high humidity, sea, extreme cold, and high altitude.
5. Intelligence: Automatic error diagnosis, easy to detect and solve problems. Optional remote communication, door lock alarm light alarm bell, open voltage verification interface, etc.
6. Portability: The product has a small size, light weight, reasonable structure, and is reliable and durable.
Application Fields
1. Short circuit test of electrical equipment: used for short-circuit current testing of electrical equipment such as power transformers, circuit breakers, isolating switches, current transformers, etc. By simulating the current situation of the equipment during short-circuit faults, the dynamic and thermal stability performance of the equipment is tested to verify its ability to withstand short-circuit conditions.
2 . Relay protection verification: providing high current signals for relay protection devices, used to verify the operating characteristics and accuracy of relay protection devices.
3. Equipment aging assessment: By applying varying degrees of high current to electrical equipment, observe the operating status and performance changes of the equipment under high current, and evaluate the degree of equipment aging.
4. Motor overload capacity test: During the production and testing process of the motor, the overload capacity of the motor is tested.
5. Generator performance testing: Simulate the operation of the generator under different load conditions, and detect the stability and accuracy of the output current, voltage, frequency, and other parameters of the generator.
6. Electrical equipment research and development verification: As an important testing tool in the research and development process of new electrical equipment, it is used to verify the design principles and performance indicators of the equipment.
7. Electrical Engineering Teaching Experiment: It is one of the indispensable experimental equipment in the teaching of electrical engineering majors in universities and vocational colleges.
Frequently Asked Questions
1 . How to choose the appropriate current level? Generally, it should be determined based on the rated current of the tested equipment. It is recommended to choose equipment with a rated current of about 1.2 times to ensure stable and reliable testing process.
2. Is the device capable of short-term operation or long-term operation? Most high current generators operate on a short-term basis with limited continuous current flow time. If long-term testing is required, models with forced heat dissipation or large capacity design should be selected.
3. Is the output current stable? Will it fluctuate? High quality equipment usually has a good voltage regulation system and current control module, which can achieve smooth regulation and stable output, meeting high-precision testing requirements.
4. Is the equipment safe? Is there a protective function? Legitimate manufacturers' products usually have multiple safety mechanisms such as overcurrent, overheating, and short circuit protection, which can effectively avoid the risks caused by misoperation.
5. Is the operation complicated? Do you need professional training? With the advancement of technology, most devices have now achieved digital control, with simple interfaces that ordinary technicians can operate with simple training.
6. Is the device large in size? Is it convenient to move? Generally speaking, low current levels (such as within 1000A) are mostly designed as an integrated unit for easy portability; High current equipment adopts a split structure to balance heat dissipation and safety.
7 . What is the testing accuracy that can be achieved? The precision of conventional high current generators can reach 1.0 level or higher, which can meet the requirements of the vast majority of power testing standards.
8 . Is daily maintenance complicated? In fact, maintenance of high current generators is relatively simple, mainly including regular inspection of wiring terminals, cleaning of equipment, and ensuring good ventilation and heat dissipation.
9 . Which manufacturer is more reliable to choose? It is recommended to prioritize brands with rich industry experience and comprehensive after-sales service. Wuhan UHV Power Technology Co., Ltd. produces high current generators, which are widely used in power systems, industrial and mining enterprises, and testing institutions. They have the advantages of stable output, reasonable structure, and convenient operation, and are highly recognized by users.
