Basic Info.
Application
Power, Electronic
Product Description
Theory of Ultra-Low Frequency Dielectric Strength Test
Ultra-Low Frequency Dielectric Strength Test is the alternative way for power frequency voltage withstand test. as we know , it is needed huge capacity testing transformer or a resonant transformer for power frequency voltage withstand test to large generator ,cables etc due to larger electrical capacity of insulating layer . The huge equipment not only bulky but also expensive and not suitable for use. The electricity sector makes some test to solve the problems. according to theory and test result from domestic and overseas , 0.1Hz ultra-low frequency voltage withstand test can solve this problems and the advantage is not only got same test results but also the instrument dimensions is small and considerably reduced the weight of it . The capacity of it is 1/500 of tradition way. Greatly simplify testing procedures, That is why commonly used in the developed countries, china 's ministry of electric power entrust Wuhan high voltage research institute to drafting " 35Kv and below XLPE insulated power cable ultra-low frequency (0.1Hz) voltage withstand test methods 'for promoting this approach. The instrument is developed according to China's made of this need. It can be widely used in cable, large-scale high-pressure rotary motor, power capacitors into AC voltage withstand test.
Products Introduction
This product combines the advanced technology of modern digital conversion, fully computer control, automated boost, buck, measurement and protection. human intervention can cared out during the automatic step-up process , mains advantage includes fully electronic ,small sizes and light weight , large-screen LCD ( clear and intuitive ) , printer output test report , easy to use . designed to fully meet the power industry standards .mechanical approach are widely use for modulation and demodulation ultra-low-frequency signals but no standard sine wave , some error of measuring and spark discharge in high-pressure part etc, the products can overcome the shortcoming of above and the following features need to indicate in particular:- Data of current and voltage are obtained directly through the sampling of high-pressure side and it is true and accurate.
- Over-voltage protection: the instrument will shut down to protection within 20 ms when the output voltage is exceeding limiting values of setting.
- Over-current protection: design for dual protection of high and low voltage, downtime protection can be accurately set in high-pressure side. Shut down to protection times is within 20 ms when the current of low-voltage sides exceeds reacted current.
- High-voltage output protection resistor design in the body boost and it is no need to additional outside resistor.
- Closed-loop negative feedback control circuit of high and low voltage.
Technical Parameter
1,output rated voltage , Table 1 for reference
2,output frequency :0.1Hz,0.05Hz,0.02Hz.
3,loading capability : Table 1 for reference
0.1 Hz maximum 0.5µF
0.05 Hz maximum 1.0µF
0.02 Hz maximum 2.5µF
4,accuracy :± (3% of full scale +0.5 KV)
5,voltage waveform distortion :≤5%
6,condition of use : indoor, outdoor; temperature : -10ºC∽+40ºC;humidity :≤85%RH
7,power supply :AC50 Hz,220V ±5%
8,power fuse : Table 1 for reference About Kolery Instrument
Located at Chongqing - a national municipality as well as southwest electromechanical manufacturing center, Kolery has many years of experience in the field of petroleum laboratory equipment solutions. Our company is mainly engaged in petrochemical analysis instruments design and produce, like karl fishcher moisture analyzer, Kinematic Viscometer, oil flash point tester, petroleum distillation machine etc. We have our own factory, and our products have good competitiveness in both of quality and price. As we understand the importance of the lab equipment quality to experimental analysis, Kolery has been committed to providing high-quality oil lab instruments to meet the customer's pursuit of accurate experimental results. We will recommend the most suitable product model based on the customer's requirements on technical parameters and experimental results. In addition to the expertise petroleum and oil analysis products, we are also familiar with the entire foreign trade process, and can quickly resolve various problems encountered by customers to ensure that trade can be proceed smoothly during the delivery period requested by customers.
FQA
Q: What are the available delivery methods?
A: Our port location: Shanghai, Chongqing or other main ports of China
Delivery methods: by sea, by air, by truck, by express
Delivery range: worldwide
Q: How long is the probable delivery date?
A: Delivery time is differs with order quantity, technical parameters requirements, etc. For most of our oil testing equipment and other lab equipment, like halogen moisture tester, spectrophotometers, the delivery date is about 3-7 business days. Please contact with us for more details.
Q: What are the available payment methods?
A: Payment methods: By T/T, L/C, Western Union, Paypal, etc.
Payment terms: Generally, for small order T/T 100% advanced, we also accept T/T 40% advanced, the balance paid by T/T when the machine is ready. For big order, we can accept 100% irrevocable L/C at sight.
Q: How long is the warranty period?
A: We warrants most of machines supplied under agreed specification against defects in material and workmanship under normal use and service for a period of 1 years from the time customer receives the goods. For some items, we offer 2 years warranty. Please contact us for details about this.
Q: What's the mini order quantity?
A: MOQ: 1 unit/set
Packing and Shipping
Payment Term
MOQ | 1 Set |
Trade Terms | EXW, FOB, CIF, CFR |
Payment Terms | T/T, L/C |
Port of Loading | Any Port of China |
Packing Method | Internaional Standard Wooden Case |
Transportation Method | By Sea, By Land, By Air, By Express |
Supply Capability | 200 Sets/Month |
After Sales Service
* The warranty period is 24 months from commissioning acceptance date on. After the warranty period is over we provide lifelong maintenance and technical service.
* We guarantee the maintenance time no more than 3 working days and response time within 8 hour.
* We build instrument service profile for our clients to record the product service and maintenance conditions.
* After instruments start service, we will pay follow-ups to collect the service conditions.
Address:
Room 10-6, Building No. 1, Qing Qing Ya She, Jiangbei District, Chongqing, China
Business Type:
Trading Company
Business Range:
Industrial Equipment & Components, Instruments & Meters
Company Introduction:
Located at Chongqing - a national municipality as well as southwest electromechanical manufacturing center, Kolery has many years of experience in the field of laboratory equipment solutions. Our company is mainly engaged in petrochemical analysis instruments, oil testers like karl fishcher moisture analyzer, Kinematic Viscometer, oil flash point tester, petroleum distillation machine etc. We have our own factory, and our products have good competitiveness in both of quality and price. As we understand the importance of the lab equipment quality to experimental analysis, Kolery has been committed to providing high-quality oil lab instruments to meet the customer′s pursuit of accurate experimental results. We will recommend the most suitable product model based on the customer′s requirements on technical parameters and experimental results. In addition to the expertise petroleum and oil analysis products, we are also familiar with the entire foreign trade process, and can quickly resolve various problems encountered by customers to ensure that trade can be proceed smoothly during the delivery period requested by customers.