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Mr. Ricky CasipeWith regards of our test instrument the’re all in Good condition. I'll purchase some instrument sooner. Thank you very much
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Ms. Remy GalaponFrom year 2020 to 2023, we purchased more than 30 equipment from Delta Technology, they are all work well and the service from Delta Technology is also good.
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Mr. MilanThe VLF-80 Tester is perfect and thank you.
Vlf 34kv High Power Sine Wave Vlf System Vlf Sine 34 Kv Tester
Place of Origin | China |
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Brand Name | Delta |
Certification | ISO9001 |
Model Number | VLF |
Minimum Order Quantity | 1 set Very Low Frequency Tester |
Price | USD1.0 |
Packaging Details | Vlf Sine Wave Vlf System Vlf Sine Tester packed in veneer case |
Delivery Time | 10 days |
Payment Terms | T/T, Western Union |
Supply Ability | 1000 sets per month |

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xItem Name | Vlf 34kv High Power Sine Wave Vlf System Vlf Sine 34 Kv Tester | Functions | Supply High Voltage For Power Cable Testing |
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Voltage Output | 30kV, 40kV, 50kV, 60kV, 70kV, 80kV | Measurement Accuracy | 2.5% |
Rated Current | 30mA | Frequency | 0.1Hz, 0.05Hz, 0.02Hz |
Power Supply | AC220V ± 10%, 50Hz/60Hz | Warranty | One Year |
Service | OEM Service Is Available |
Vlf 34kv High Power Sine Wave Vlf System Vlf Sine 34 Kv Tester
Introduction:
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Vlf Sine Wave Vlf System Vlf Sine Tester is designed and manufactured for electrical equipment very low frequency withstand voltage test.
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Vlf Sine Wave Vlf System Vlf Sine Tester is essentially an alternative of power frequency withstand voltage test.
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It is much smaller, lighter and portable than power frequency withstand voltage tester. It is proved home and abroad that 0.1Hz ultra-low frequency withstand voltage test can replace power frequency withstand voltage test.
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It can be applied for 10kV, 35kV, 300MW thermal power machine, 10kV, 35kV power transformer and other electrical equipment.
Features:
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Max voltage output: refer to following table;
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Output frequency: 0.1Hz, 0.05Hz, 0.02Hz;
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Measurement accuracy: 2.5%;
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Positive and negative voltage peak errors < 2.5%RDG+0.3%FS;
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Voltage wave form distortion: <3%;
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Insulation resistance measurement error: <2.5%;
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Leakage current measurement error: <2.5%;
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Power supply:AC220V ± 10%, 50Hz/60Hz;
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Environment temperature: 0~50°C;
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Humidity:≤85%RH;
Parameters:
Model | Rated Voltage/current | Load Carrying Capacity | Power fuse wire | Product Structure and Weight |
VLF-30 | 30kV/20mA (Peak) | 0.1Hz,≤0.5µF~1.1µF | 5A | Controller:4kg Booster: 25kg |
0.05Hz,≤0.5µF~2.2µF | ||||
0.02Hz,≤0.5µF~5.5µF | ||||
VLF-40 | 40kV/30mA | 0.1Hz ≤ 1.1uF | 6A | Controller: 4kg Booster: 35kg |
0.05Hz ≤ 2.2uF | ||||
0.02Hz ≤ 5.5uF | ||||
VLF-50 | 50kV/30mA (Peak) | 0.1Hz,≤0.5µF~1.1µF | 7A | Controller:4kg Booster: 50kg |
0.05Hz,≤0.5µF~2.2µF | ||||
0.02Hz,≤0.5µF~5.5µF | ||||
VLF-60 | 60kV/30mA (Peak) | 0.1Hz,≤0.5µF | 9A | Controller:4kg Booster Grade 1(30kV):25kg Booster Grade 2(30kV):25kg |
0.05Hz,≤0.5µF~1µF | ||||
0.02Hz,≤0.5µF~2.5µF | ||||
VLF-80 | 80kV/30mA (Peak) | 0.1Hz,≤0.5µF | 12A | Controller:4kg Booster Grade 1(30kV):25kg Booster Grade 2(50kV):50kg |
0.05Hz,≤0.5µF~1µF | ||||
0.02Hz,≤0.5µF~2.5µF |
Vlf Sine Wave Vlf System Vlf Sine Tester Real Picture:


