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HZWJE series of non-local discharge withstand voltage test device is mainly used for high voltage circuit breakers, insulators, lightning arrester, switches, mutual inductors, cable accessories, high voltage coils and other specimens to carry out the frequency withstand voltage, partial discharge and other scientific test research. The whole set of equipment includes intelligent insulation test comprehensive control system, digital correction pulse generator, input unit, frequency corona-free test transformer, no local discharge coupling capacitor, no local discharge protection resistor, electric regulator and isolation filtering device. The whole set of equipment is required to be used indoors, with a good and dedicated grounding system, grounding resistance value <0.5Ω, the smaller the better.
| No local Discharge control section | Partial Discharge Tester | Non-local Discharge transformers | ||||
| Manual Voltage Adjustment | Electric Voltage Adjustment | Industrial control machine Control | Analog | Digital | Epoxy cartridge oil type | Inflatable |
| Digital Display | Digital Display | PLC+Industrial computer, can be interfaced with the State Grid EIP system | Touch Screen | Industrial control machine, can be interfaced with the State Grid EIP system | Optional | Optional |
| Voltage level (test article not transformer) |
Control section capacity | Partial Discharge Tester | Boosting section | Isolation Transformer | Voltage Divider | Protection Resistance |
| 12kV switches, transformers, switch cabinet, etc. |
5kVA and above | Optional | 50kVA and above | 5kVA | 50kV | 50kV |
| 24kV switches, transformers, switch cabinet, etc. |
10kVA and above | Optional | 100kVA and above | 10kVA | 100kV | 100kV |
| 40.5kV switches, transformers, switch cabinet, etc. |
20kVA and above | Optional | 120kVA and above | 20kVA | 120kV | 120kV |
Product Introduction
I. HZWJF-50/120 Non-local Discharge Withstand Voltage Test Device
The main interface of the touch screen can complete the same control function as the upper computer. The panel can digitally display the current test voltage, test current and other necessary information, and manually set up the boosting curve (set up the rated voltage, the local discharge test current and other necessary parameters), and complete the local discharge, voltage withstand and other tests with a single key.
The panel is equipped with an emergency stop button switch, which can be pressed in case of emergency and the system will automatically break the main circuit switch. The panel is equipped with a power button, which can be pressed to start the system with electricity.
The controller has an external control function, providing start button, stop button, and test result status indicator that can be connected to the generator section. The controller has reserved interfaces for external red and green indicators, which can be used to install red and green indicators in the main loop body part.
I. HZWJF-50/120 Non-local Discharge Withstand Voltage Test Device
1. Rated Output Capacity:50kVA(Non-local Discharge Test)
2. Rated Output Voltage: 120kV (Non-local Discharge Test)
3. Rated Output Current: 0.416A (Non-local Discharge Test)
4. Rated input Voltage: 0.38kV
5. Short-circuit Impedance: <6%
6. Local discharge level of the complete set: <5pC at 100% rated voltage, ≤2pC at 80% rated voltage
7. Running time: under 100% UH and 100% IH, it is allowed to run for 30 minutes from the ambient temperature, and under 70% UH and IH, it is allowed to run continuously from the ambient temperature, and the temperature rise of transformer winding is ≤65K, and the temperature rise of transformer oil is ≤55K.
8. Waveform distortion rate of the set: regulator input voltage waveform distortion rate <3%, complete sets of equipment output voltage
Waveform distortion rate of ≤ 3%
II. YDTW-50kVA/120kVA Non-Local Discharge Test Transformer
1. Structure Type: insulated shell oil-immersed natural cooling, single unit composition
2. Phases Number: single-phase
3. Frequency: 50Hz
4. Rated Input Voltage: 0.38kV
5. Rated Input Current: 131.5A
6. Rated Output Voltage: 150kV
7. Rated output current: 0.416A
8. Rated output capacity: 50kVA
9. Measured winding voltage ratio: 1000:1
10. Waveform distortion rate: ≤3%.
11. dielectric loss factor: tan8<0.3%(90ºC)
12. Partial discharge:≤5pC under 100% rated voltage,≤2pC under 800% rated voltage
13. Insulation level: 110% rated self-induced withstand voltage for 1 minute
14. Overcurrent Capacity: effective measures should be taken (additional protective resistors, etc.), so that the test transformer in the test product insulation breakdown phenomenon should not cause damage to the test transformer; in 110% In the rated current duration of 1min working conditions, overcurrent on the test transformer should not cause thermal damage and deformation of the windings.
15. Over-Voltage capability: in 110% UH (220KV) time 1min under over-voltage, should not cause any insulation damage to the test transformer, when the waveform distortion rate ≤ 5%.
16. Running time: in 100% UH, IH from the ambient temperature is allowed to run 60 minutes, in 70% UH, IH from the ambient temperature is allowed to run continuously, transformer winding temperature rise ≤ 65K, oil surface temperature rise ≤ 55K.
Temperature rise of transformer winding ≤ 65K, temperature rise of oil surface ≤ 55K. 17.
17. Noise level: ≤65db
18. Insulating oil performance: oil withstand voltage ≥ 60kV; water content ≤ 10ppm
19. Dielectric loss (90 ºC) ≤ 0.4%
III. TYDZ-50/0.38/0~0.42 Column regulators
1. Phase Number:Single-phase
2. Frequency: 50Hz
3. Rated Capacity: 50kVA
4. Rated Input Voltage: 0.38kV
5. Rated Input Current: 131.5A
6. Rated Output Voltage:0~0.42kV
7. Rated Output Current: 119A
8. Waveform distortion rate: ≤ 3%
9. Starting voltage:≤2%
10. Short-circuit impedance: ≤8% (within 50%~100% voltage regulation)
11.Structure form: column, dry type
12. Short-circuit capacity: transient capacity state of the test transformer output through the protective resistor on the test piece discharge, short-circuit current up to 2 times the output, discharge duration of 8 weeks should not be within the regulator winding caused by any thermal damage and mechanical deformation.
13. Voltage regulating method: electric voltage regulating, using DC motor drive
14. Regulator with upper and lower limit devices
15. Running time: Same as transformer
Q1:Is your company a sales or a manufacturer?
We are an integrated trade and manufacturing company with our own factory.
Q2:If we need to customize our own brand or if there are special requirements for the built-in software of the machine, can it be customized?
Yes, we accept OEM/ODM/OBM and can customize the built-in software of the product according to the customer's special requirements.
Q3:What is the usual lead time? How long can we receive the order after placing it?
In normal circumstances, products in stock can be received within 5 to 7 days via the fastest international express. Other situations may vary depending on the quantity of products ordered, whether there are special customization requirements, and the delivery time chosen.
Q4:How can we ensure that the product will not be damaged during transportation, considering the large size of the product?
We have professional internal and external packaging to ensure the safety and stability of the products during transportation. For fragile or other special parts, we will include an extra set to ensure that the customer can use the product immediately upon receipt.
Q5:How do you handle after-sales service? What if there is a quality problem with the product or if the customer does not know how to operate it?
For quality issues that are not caused by human error, we provide a one-year warranty from the time the product is delivered, and lifetime technical support. Other after-sales issues will be addressed by our professional technical staff within 24 hours. The product comes with a user manual and an operation video.
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