Xi'an Xu&Hui Electromechanical Technology Co., Ltd.
Xi'an Xu&Hui Electromechanical Technology Co., Ltd.
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XHDB Series High voltage divider
High voltage divider are mainly used for AC and DC high voltage measurement and waveform analysis. The device consists of a highly stable passive resistance-capacitance voltage divider and a high-precision digital sampling and analysis system (i.e. 7-inch touch screen). The meter is equipped with a rechargeable battery and can continuously work for more than 2 hours. The voltage divider, LCD digital display meter, measurement wires, power cord, instructions, etc. are concentrated in a lightweight aluminum alloy box, making it easy to carry and use. This peak meter is suitable for on-site measurement of power systems and for measuring power frequency AC or resonant AC voltage in laboratories of universities and colleges.
Main Features:
●Accurately locate the fault point by using the vibration wave, sound wave and electromagnetic wave generated by the flashover discharge at the fault point.
●Acoustic and magnetic channels are designed separately and powered separately, with stronger anti-interference ability.
●Super powerful magnification of 500,000 times, the detection depth is greater than 10 meters.
●Quiescent current is less than 10mA, ultra-low power consumption design, continuous operation for more than 20 hours.
●Meter design, the signal strength and trend are clear at a glance.
●Zero electrical level design, can be adjusted arbitrarily, suitable for all kinds of strong and weak scenes.
●Small size, light weight, easy to carry.
Technical specification
1.Rated voltage: AC 300kV, DC 300kV
2.Accuracy: AC 0.5, DC 0.5
3.Divider impedance: AC/pF:600, DC/MΩ:1600
4.Partial pressure ratio: 10000:1
5.Usage environment:-5~40℃ Humidity≤80%
6.Voltage measurement range: 0~300kV rated voltage
7.Overall capacitance: 600pF
8.Working frequency: 20～300Hz
9.Partial discharge amount: Partial discharge amount ≤10pC at rated voltage (with partial discharge coupling terminal, which can be used for voltage measurement and as a coupling capacitor)
10.Insulation level: 1.1 times rated voltage for 1 minute
11.System measurement error: ≤1.0%
12.Dielectric loss: ≤0.2%
13.Partial pressure ratio: 2500:1
14.Structure: C1 is an epoxy simple shell oil-paper insulated structure capacitor; C2 uses the same temperature coefficient and frequency coefficient as C1.
15.Features: The capacitors of the high and low voltage arms are made of the same material, with small temperature coefficient and small angular displacement, and the voltage dividing ratio remains unchanged within the range of 30 to 300Hz.
16.Measuring system: Adopts a dedicated intelligent peak voltmeter with 41/2-digit large-screen LCD display, which can display peak value/effective value, frequency, waveform deformation rate and voltage waveform, etc.
17.Sampling method: microcontroller point-by-point AC sampling, 16-bit high-speed industrial-grade AD conversion
18.Base and other accessories: The base has sufficient stability, with wheels and brakes. The voltage equalizing ring adopts a double-ring structure, and there is no discharge or partial discharge interference under the rated voltage.
19.Voltage display range: 0~1.2 times rated voltage
20.DC voltage measurement accuracy: 0.5%±2 words
21.twenty one. AC voltage true effective value Vrms measurement accuracy: 1.0%±2 words
22.twenty three. AC voltage Vpp/2 measurement accuracy: 1.5%±2 digits
23.twenty four. AC frequency measurement accuracy: 0.5%±2dig
24. Power supply: external AC220V±10% 50Hz, built-in 12V rechargeable battery
25.Ambient temperature: -5℃～+40℃
26. Relative humidity: ≤80%
27.Altitude: ≤1000m
28.No chemical deposits that seriously affect the surface insulation and electrical testing of the equipment
Working principle
The voltage divider meter consists of an AC and DC voltage divider and a peak meter. The voltage divider is a passive resistor-capacitor voltage divider, which is composed of a high-precision low-temperature drift resistor and a precision capacitor. The peak meter is composed of a 32-bit ARM chip and a true-color touch human-machine interface.
The peak meter has the following technical features:
1. The high voltage is divided and sampled by a voltage divider, and connected to the peak meter through the coaxial cable. The peak meter automatically switches between AC and DC:
2. During AC measurement, the waveform, true RMS, peak-to-peak value, peak/peak value, frequency, and sine wave average value of the measured high voltage can be displayed simultaneously on the display screen of the meter head.
3. The sinusoidal voltage waveform is adaptive and self-triggering, and the waveform automatically fills the display area.
4. The instrument adopts a true color touch screen human-machine interface, which is easy to operate and has high measurement accuracy. The power supply adopts AC and DC, making it easy to carry and use.
1. Header panel socket description
(1) Ground terminal: safety ground connection terminal.
(2) ~220V: Single-phase AC 220V/50Hz external working power supply (or charging power supply).
(3) Power switch: main power switch.
(4) Voltage input: voltage input connection interface.
2. Voltage divider structure description, as shown in Figure 2
High voltage input: the high voltage connection terminal under test.
Output: The sampling signal output end of the voltage divider is connected to the input end of the meter panel.
Ground: Connected to the ground grid.
Technical Parameters
| Magnification | 500,000 times |
| Positioning accuracy | ±0.2m |
| Output impedance | 350Ω |
| Working power supply | two standard 9V batteries |
| Quiescent current | <10mA |
| Working conditions | Ambient temperature: -20～50℃; Relative humidity: ≤90%. |
Other voltage level customizable(Voltage level: 50kV, 100kV, 150kV, 200kV, 300kV, 400kV)
Welcome you contact us for more information and service!
FAQ
1. Are you a trading company or a manufacturer?
We are a professional manufacturer with more than 10 years of experience. We can strictly control the quality of parts and finished products.
2. What is the delivery time and inventory?
If our best-selling products are in stock, it will be 5-8 working days for shipment. But for mass production and customized production, the time will take 2-4 weeks.
3. What are your payment terms?
Payment ≤ USD 2000, 100% T/T prepayment. Orders over USD 2000 can be negotiated.
4. How long is your product warranty?
We provide 1 year warranty for the equipment.
5. How do you ensure quality?
The product links include R&D, manufacturing, commissioning and technical support, following strict and scientific management principles. Therefore, we can support strong production and R&D capabilities, and can produce high-quality products at competitive prices to meet customers' high requirements.
6. What support can I get?
We will provide training support, marketing support, technical support and supply chain support. You can contact us for more information.
7. Where is your factory? Can I visit your factory?
We are located in Xi'an, Shaanxi, China. We are close to Xi'an Xianyang International Airport, which is about 2 and half hours by plane from Shanghai and Guangzhou. All customers from all over the world are welcome to visit us.
8. How to become your dealer?
Every company interested in power system instruments can contact us without hesitation, including website letters, emails, telephones, etc. We will contact you quickly according to your company information and cooperation intentions.