Darui Electric recommends
Product Introduction:
Adopting brand-new power supply technology, it features small size, light weight, large output current, and automatic adjustment based on load size. The whole machine is sampled by dual chips for higher precision, automatically completing self-check, data processing, display, printing, and other functions, with automatic discharge and discharge indication. The instrument has high testing accuracy and is easy to operate, enabling rapid measurement of transformer DC resistance.
The ZGY-40A DC Resistance Tester uses a 32-bit ARM core as the processing core to control the whole machine, automatically completing self-calibration, steady current judgment, data processing, resistance value display, and other functions. It can measure the DC resistance of various types of transformers and mutual inductors.
Product Parameters:
◆ Output current and range: Output current: max 20A,
|
Current |
Range (Accuracy) |
Current |
Range (Accuracy) |
|
20A |
1mΩ-100 mΩ (±0.2%±5 digits) |
0.1A |
10Ω-200Ω (±0.2%±5 digits) |
|
10A |
100 mΩ-1Ω (±0.2%±5 digits) |
10mA |
200Ω-1000Ω (±0.5%±5 digits) |
|
2A |
100mΩ-10Ω (±0.2%±5 digits) |
1mA |
1000Ω-20000Ω (±0.5%±5 digits) |
Note: When using the automatic gear for testing, if the resistance fluctuates, please select manual current or reduce the gear based on the automatic gear current.
◆ Maximum resolution: 0.1uΩ.
◆ The instrument adopts a 65K true color LCD display with Chinese menu prompts for easy operation.
◆ Has large capacity storage function.
◆ Working power supply: AC220V±10%,
◆ Working temperature: -10℃～40℃.
◆ Working humidity: Ambient humidity <80%RH.
◆ Instrument weight: 10Kg.
Product Introduction:
The ZGY-40A DC Resistance Tester adopts brand-new power supply technology, featuring small size, light weight, large output current, and automatic adjustment based on load size. The whole machine is controlled by a microcontroller, automatically completing self-check, data processing, display, printing, and other functions. The ZGY-40A DC Resistance Tester has automatic discharge and discharge indication functions. The instrument has high testing accuracy and is easy to operate, enabling rapid measurement of transformer DC resistance.
Safety Measures:
◆ Be sure to read this manual carefully before using the instrument.
◆ The operator of the instrument should have general knowledge of electrical equipment or instruments.
◆ This instrument can be used indoors and outdoors, but should avoid rain, corrosive gases, excessive dust, high temperature, direct sunlight, and other places.
◆ The instrument should avoid severe vibration.
◆ Maintenance, care, and adjustment of the instrument should be performed by professionals.
◆ After testing, be sure to wait until the discharge alarm sound stops before turning off the power and removing the test leads.
◆ When measuring no-load tap-changing transformers, be sure to wait until the discharge indication alarm sound stops before switching gears.
◆ During testing, it is forbidden to move the test clips and power supply lines.
Product Features:
◆ The instrument has large output current, wide measurement range, small size, and light weight.
◆ The current output automatically adjusts according to the measured resistance value to jump to the appropriate range, avoiding errors caused by improper current selection.
◆ Has a complete protection circuit and high reliability.
◆ Vertical case structure for easy on-site operation.
◆ Clear discharge indication to reduce misoperation.
Product Parameters:
◆ Output current: 40A uses constant current source output
◆ Range:
2A (1Ω-10Ω±0.2%±5 digits)
10A(500mΩ-2Ω±0.2%±2 digits)
20A(10mΩ-500mΩ±0.2%±2 digits)
40A（1mΩ-200mΩ±0.2%±2 digits）
◆ Resolution: 1μΩ
◆ Working temperature: 0～40℃
◆ Ambient humidity: ≤90%RH, no condensation
◆ Working power supply: AC220V±10%, 50HZ±1HZ
◆ Volume: 460×235×405mm
◆ Weight: 12 Kg (excluding test leads)
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
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