Product Details

Series of Portable 0.1HZ Digital Very-low-Frequency High Voltage Tester

Product Description

1.The new generation of AC withstand tester, replacing harmonic withstand tester, is widely used in AC withstand test of large capacity equipments such as generator, cable, insulator, power capacitor, large transformer etc.

2.Not only can it be the first choice of on-site and outdoor testing, but also as the ultra-low frequency source.

Advantage of 0.1Hz HRVLF series
1,Small volume, light weight, easily to operate. Theoretically speaking, the capacity is of 1/500 of power Frequency.
2. AC ultra-low frequency tester doesn’t form tree-clearance in the insulating condition.
3. Unlike DC test, it’s uneasy to destroy cables; meanwhile the capacitance effect of testing articles has no influence to it.
4. Pernicious polarization charge would make no way to dielectric during the testing.

Features of function
1. Adopting digital convention technology and microcomputers controlling system make the testing process completely automatic.
2. The large screen of liquid crystal and Chinese input operating system insure that testing wave-form (Sinusoid Wave) can be displayed; testing reports can be printed.
3. Auto-protection of over-current and over-voltage, the research,design and manufacture of independent intellectual property rights according to power standard
4. Multi-frequency selections (0.1Hz,0.05Hz,0.02Hz) strengthen the load-bearing capability.

Specification of this series (special order testing equipment is also available)

Type

Rated voltage

Carrier load capacity

Weight

HRVLF-30/1.1
(applied for 10kv Large capacity product withstand testing)

30(40)KV
(peak)

0.1Hz,≤1.1uF

0.05Hz,≤2.2uF

0.02Hz,≤5.5uF

Controller:4kg
pressure Booster:25kg

HRVLF-50/5
Breakdown tester
( applied for 10kv extra Large capacity product withstand testing

50KV
(peak)

0.1Hz,≤5uF

0.05Hz,≤10uF

0.02Hz,≤25uF

Controller:5kg
pressure Booster:60kg

HRVLF-80/1.1
(applied for 35kv large capacity product withstand testing)

80(90)KV
(peak)

0.1Hz,≤1.1uF

0.05Hz,≤2.2uF

0.02Hz,≤5.5uF

controller:5kg
pressure booster:45kg

1. Measuring accuracy: 2.5%
2. Voltage error of peak-peak: ≤2.5%
3. Distortion of voltage waveform: ≤5%
4. Using condition: indoor, outdoor: Temperature: -10~+40℃; Humidity: ≤85%RH
5. Power: AC 50HZ,220V±5%
6. Equivalence: scientific theories and tests can prove that 0.1Hz ultra-low frequency withstand testing is as equivalent as industrial frequency withstand testing.

Withstand testing comparison of 0.1Hz ultra-low frequency, industrial frequency, abnormal frequency and DC.

Items	Power frequency hi-pot testing	Variable frequency hi-pot testing	0.1Hz hi-pot testing	DC hi-pot testing
Equivalence	Good	Good	Good	Not so good
Insulation damage	Little	Little	Little	Large
Operating safety	Relatively low	Relatively low	high	Relatively low
Test wiring	Complex	Most complex	Simplest	Complex
Volume,weight of devices	Heaviest	Relatively heavy	Light	The lightest

Our Services

(1) Specialize:

Our company engineers most from Wuhan National Grid Institute, have mature technology and wonderful products,have our first oversea order as early as 2007 year to Vietnam, have near 80 countries & areas for now, we have near 20 years experience manufacture & marketing in h.v test area, has won three national patent certification, grasp the core technology, we can customized according to your special requirement.

(2) Quality:
Strictly factory to user quality control, all equipments will be tested by our Quality Control Department before leave factory.The Inspection Report will be sent to you when shipment to user.

(3) Service:
Timely and effective before and after sales service.
3 years warranty and technical support.
Golden supplier of alibaba, support 100% protection for product quality and first time shipment, which welcomed by our old users.

Packaging & Shipping