Technical specification1.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.
