| （Ⅰ）Very-low-Frequency
Product |
| HRVLF
Series of Portable 0.1HZ Digital Very-low-Frequency High Voltage
Tester |
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| 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. 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.
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| HRVLF-80/1.1
Digital Very-low-Frequency High Voltage Tester |
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Specification
of this series (special order testing equipment is also available)
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| 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 |
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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
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Not so good |
| Insulation damage |
Little
|
Little
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Little
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Large |
Operating safety
|
Relatively low
|
Relatively low
|
high |
Relatively low
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Test wiring
|
Complex
|
Most complex
|
Simplest |
Complex
|
Volume,weight of devices
|
Heaviest |
Relatively heavy |
Light |
The lightest |
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Our
recommendation: Related articles of ultra-frequency technology
[1] [2]
[3] [4]
[5] |
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（Ⅱ）Guard
Equipment for Prison Grid |
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HRJWG-10 High-voltage
Guard Equipment for Outside Prison Grid
|
| HRJWG-10
High-voltage Guard Equipment for Prison Grid |
This
kind of device is equipped with real-time alarming
and attacking function, and is most applicable as
high voltage transformer guard equipment in grid
of prison or detention house for security and justice
system. Alarming control console is consisted of
auto-alarming manual control console, non-microcomputer
auto- alarming control console, microcomputer auto-alarming
control console.
Technical Parameter:
1. Rated capacity: (prison) 10 (12) kVA, (detention
house) 2 kVA
2. Output voltage: 10kV×2，2KV（5KV）×2 |
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※Technical
Documentation of HRJWG-10 High-voltage Guard Equipment
for Outside Prison Grid |
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(Ⅲ)
Testing Equipment for Railway Locomotive |
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HRTNZ
Type AC 0-2000V Adjustable Stable Voltage Power Supply
|
| HRTNZ
Type AC 0-2000V Adjustable Stable Voltage Power
Supply |
| Input:
AC 380V( single-phase), output AC 0-2000V，100A.
It can be served as voltage fluctuation simulation
source in railway locomotive DC 110V control source
cabinet test-------as simulation test equipment
for voltage operation of railway grid (25×（1+16%/1-25%）kV、25×（1+16%/1-34%）kV
, With big magnitude of constant voltage fluctuation).
This equipment can automatically adjust and stabilize
voltage by manual control or numerical control.
It also has a high output level, which far exceeds
users’ need and tests’ requirement. |
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Repair
and Maintenance of Generator Set for Power Station |
| Services: professional
inspection & repair, routine major repair & maintenance,
troubleshooting & maintenance of any types of generator
sets, such as: hydraulic generator, steam turbine generator,
medium or large generators. Within 4 hours after client’s
requests, it can proceed to the fault diagnosis and troubleshooting,
not over 72 hours for big troubles in the major repair.
This service system resolves the trouble of time and workforce
for power station, instead assures their profits in a
large extend. Time is money, time is profit. Professional
Team: all the engineering technicians and workers
of installing, debugging & inspecting are from professional
manufacturing factory, which ensure the specialty and
quality guarantee. (All the fixed generator sets can
match the original installing and running technical
data.)
Meanwhile, it manufactures and supplies detecting and
testing equipment for generator sets: AC and DC withstand
tester, detecting device and meter, such as hydraulic
generator, steam turbine generator, partial discharge
inspecting analyzer for generator stator, digital fault
detector of composite insulators for generator stator
winding, portable corona discharge detector, looseness
detector for stator slot wedge, SF6, helium (hydrogen)
leakage detector, etc.
In addition, all types of main and auxiliary equipment
for generator set are also available.
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