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| 33、HRWGR
Anti-interference Detector of Grounding Resistance for
Earthing Grid |
※Instruction
of HRWGR Anti-interference Detector of Grounding Resistance
for Earthing Grid |
| It applies the controlling,
sampling, data processing of microcomputer and
displays by the large screen of liquid crystal.
Testing the large erathing grid of power plant
and substation by the abnormal frequency keeps
high accuracy and stabilized performance; and
efficiently resolves the industrial frequency
current-interference. With only 1～3A testing current
and 4kg weight, it greatly eases the labour intensity
during the test.
Output current: AC3A or 5A
(it can be used with computer on-line operation,
our recommended product with high cost performance)
Output voltage: AC0～120V
Measuring range: 0～100Ω～500Ω
Measurement error: ＜1%
Connection: trilinear, four-line
In addition, it provides DER2571A/B（ZC-8）type
terrameter and multifunctional grounding terranmeter
with double jaw, which is suitable for any grounding
occasions and conditions, and proceeds the online
measuring of soil resistivity and circuit connecting
resistance.
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HRSQ
Multifunctional Tester for Grounding Resistance
with Double Jaw
Technical characteristics:
1. In any grounding occasions, it can carry
out the test normally by using double-measuring
method: non-contacting and accessing piles.
No matter the amount of grounding point is multiple
or single.
2. Online measuring is available. It can test
the electric equipment under its working condition
without cutting from the grounding part.
3. The capacity of anti-interference is strong.
Even in the 500kV transformer substation, it
can produce the high-frequency current to filtrate
the harmonic interference, like 50Hz or 100Hz
from the electric current, then feedback the
accurate results.
4. The soil resistivity can be displayed automatically
without trivial calculation.
5. The inner storage with large capacity can
save 100 groups of measuring datas.
6. The collocating charger and secondary battery
is designed for electricity saving, it will
be cut automatically when exceeding schedule
time.
7. Four-line measurement ensures the accuracy
of testing for the grounding resistance below
0.7Ω.
8. The alarming system warms if surpassing the
limitation or using the incorrect testing condition.
9. Self-testing is also available.
Application Range:
1. Non-accessory electrode measuring for grounding
resistance of communication and power system
is available to do the test on the concrete-covering
ground.
2. The soil resistivity measuring under the
earthing grid construction is easy to calculate
the depth of the grid for builder.
3. The digital tester for traditional grounding
resistance has a full-scale application, which
is replacing the pumping traditional meter.
4. The resistance tester is connected in the
looping circuit.
Technical indexes:
1. Measuring range: 0.01Ω-1000Ω
2. Capacity: 100 groups of datas
3. Humidity:10%～80%RH
4. Weight: 0.8 kg (no accessories)
5. Resolution: 0.01Ω
6. Temperature: -10℃ ～４０℃
7. Electrical source: four NO.5 MH/Ni charged
batteries
8. Overall dimension: 230×120×42mm
9. Dimension of pliers: Φ55mm
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| 34、HR
Series of Megohm-meter (Insulated Resistance Meter) |
| It
is applicable for testing the in insulated resistance
of all kinds of transformer, generator, cable, switch,
and electric devices. The design of low-watt-loss and
electrostatic-proof makes the outdoor operating possible.
Technological indexes:
Output voltage:500V、1000V、2500V、5000V、10000V
Measuring range: 0～400GΩ
Displaying mode: numerical or index display
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| 35、HRGP
Power Frequency Signal Generator |
It can be
used for calibrating the frequency, synchronous current,
and voltage for AC devices and meters with single phase.
Output voltage: 0～450V，50W
Stability: 1‰
Measuring precision of frequency: 0.1 grade
Measuring precision of voltage: 0.2 grade
Range of frequency: 35～75Hz
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| 36、HRPX
Industrial Frequency Phase Meter |
The
main technical indexes
Measuring method of phase: either two lines U-U、U-I、I-I
Measuring precision of phase: 0.2 grade
U(U-I method), 10mA～10A divided into 4 grades
I(on-line detaction100mA～5A)
Resolution:0.1°，0～360°
Range of frequency testing: 40～60Hz, maximum error is
0.01Hz , and it can measure the frequency of either
one line or two lines
Signal voltage input: 5～500V
Current signal input: 0.5～5A
Range of tested power factor: cosφ1～0 sinφ0～1
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| 37、HRZLY
Series Vacuum Oil-filter |
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| This kind
of vacuum oil-filter has combined original design, compact
structure, light and flexible features, low power consumption,
high effect, and convenient operation together. Besides,
adding high effective impurities-absorbers during the
testing period can filtrate water, impurity, and harmful
gas, and also improve products’ quality and dielectric
strength.
The main technical indexes:
Capacity of oil-purifying: 30、50、100L/min
Working rated pressure：500kPa
Working vacuum degree: ≤99kPa
Limit vacuum degree :＜100kPa
Remaining water：≤5ppm
Puncture voltage ≥50kV（electrode gap：2.5mm）
Air content：below0.5%
Impurity：≤5μm
Heating power：2×2；2×3；2×3.5；2×4KW
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| 38、HRZJ3
Microcomputer-Typed Detector of Anti-distributed Capacitive
Type Direct current Grounding |
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| With
continuous improvement of 20 years, it keeps the advanced
technology and creates the domestic origination.
Technological characteristics:
It is a new generation invented on the basis of HRZJ1
and HRZJ2 type.
1. It is possible to find out one-point or multi-point
abort situation without installation, electrical cutting,
and insulated pumping.
2. It directly displays grounding resistance data,
which is convenient to master insulating condition.
Range: 0-99KΩ
3. It directly displays grounding electrical capacity
data, which is convenient to master electrical capacity
disturbing condition. Range: 0-99uKor 0-99KΩ.
4. Directly displaying the grounding direction can
lead the instructors to search rapidly.
5. It can adjust to the AC& DC looping current
grounding, token-ring power supply grounding, and
diode isolation power supply grounding.
6. Referring to semiconductor light grounding, it
is easier to find out complicated signal loop.
7. Pliers with “heart-shape” designing, it shares
the big or small lines without changing pliers.
8. 24V、48V、110V、220V direct current system shares
a suit of direct current grounding detector.
9. Detecting sensitivity: ≥50KΩ, both index and numerical
display is available, which is easy to judge. Special
requirement can reach ≥100KΩ
10. Accuracy：100%
11. Anti-electrical capacity disturbance：>1200KΩ/uF
12. Signal output power: <0.15w, containing protection
of current limitation, which has no influence on relay
protection of power system, and automatic or operative
loop, using safely.
13. Signal frequency stability: ±0.02Hz
14. Dimension of signal generator：280mm（width）×100mm(height)×300mm（depth）
15. dimension of portable machine：126mm（width）×70mm（height）×156mm（depth）
16. Deluxe Copper-aluminum Outer package is easy to
carry.
17. AC & DC power supply: AC/DC 220V
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（Ⅵ）on-line
detecting products |
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| 39、HRBJZ
Portable On-line Detecting System of Dielectric Loss
and Resistant Current for Substation |
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40、HRBJT
Distributed On-line Detecting System of Electric Equipment
on Insulation for Substation |
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