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110 kv operations
The solution
Regular maintenance of 110kV substation electrical equipment and preventive test equipment
Product list
| The serial number | A pilot project | Project requirement | Recommend equipment |
| 1 | Transformer test class | 35kV high voltage cable, high voltage switch, circuit breaker, PT/CT, 110kV transformer, etc | HYG- frequency conversion resonant withstand voltage test device |
| Cable insulation performance | Hyg-5000v insulation resistance tester | ||
| Find cable fault | Hyg-2013 cable fault tester | ||
| 2 | Transformer test class | 50KVA/110KV transformer to ground withstand test | HYG- frequency conversion resonant withstand voltage test device |
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Circuit breaker conductive loop contact resistance measuring range: 0-1999.9 mu Ω
Measuring current: dc ≥200A
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Hyg-200a circuit resistance tester |
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| Grounding between transformer and switch cabinet | Hyg-2571 earth resistance tester | ||
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Transformer, voltage transformer ratio and group
Conversion ratio: 1 ~ 9999.9 category: 0 ~ 11
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HYG-10000 full automatic variable ratio group tester | ||
| All three channels output 10A at the same time | Hyg-10a transformer dc resistance tester | ||
| 5000V | Hyg-5000v insulation resistance tester | ||
| Breakdown withstand test of insulating oil at 80KV | Dielectric strength test of hyg-a insulating oil | ||
| Winding deformation | Deformation test of hyg-500 transformer winding | ||
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Transformer, PT, CT capacitance and dielectric loss measurements
Anti-jamming index: frequency conversion anti-jamming, automatic identification of capacitance, inductance and resistance。 |
Hyg-8000 anti-interference dielectric loss automatic measuring instrument | ||
| 3 | Switch cabinet test class | Switchgear withstand test 95KV | Hyg-10kva /100kV withstand test |
| The insulation performance of the transformer is 5000V |
Hyg-5000v insulation resistance tester |
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| Test the contact resistance at the copper connection 200A | Hyg-200a circuit resistance tester | ||
| 4 | Zinc oxide test class | Dc parameter test 120KV | Hyg-120kv /2mA dc high voltage generator |
| Ac parameter test | HYG-IV zinc oxide arrester | ||
| 5 | PT/CT test class | Power frequency withstand voltage | HYG- pressure test |
| CT volt-ampere characteristics, 5% and 10% error curves, variable ratio, polarity, demagnetization, secondary loop, secondary ac withstand, PT volt-ampere characteristics, variable ratio, polarity, secondary ac withstand test functions | HYG-1000BTransformer comprehensive tester | ||
| Measurement of capacitance and dielectric loss of transformer, PT and CT, anti-interference indicators: frequency conversion anti-interference, automatic identification of capacitance, inductance and resistance. | HYG-8000Anti-interference dielectric loss automatic measuring instrument | ||
| 6 | Comprehensive insurance test test class |
Integrated protection test: voltage protection, current protection, differential protection, low cycle protection, whole group
Test output 3 phase current, 3 phase voltage single phase current output 0 ~ 40A
Single-phase voltage output 0 ~ 120V
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HYG-103Microcomputer relay protection tester |
| 7 | Generator set test class | Generator rotor ac impedance tester | 10kv 18MW |
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8 |
Other test items |
cable |
HYG-5000VDigital megohm meter |
| On-load tap-changer is the transition time, transition of waveform, transition resistance, the precise measurement of the parameters such as phase synchronism (range: 0.3 ~ 40 Ω precision Ω 0.3 ~ 1 Ω Ω 0.1 mm, 1 Ω ~ 40 Ω + / - 5%) | HYG-2009On-load tap changer characteristic tester | ||
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Grounding grid measurement at substations of 500kV and below Current output:：AC:5A可選、 Measuring range：0～150Ω（Pile impedance with current） Power frequency/crossover interference rejection |
HYG-5AEarth grid grounding resistance tester | ||
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The capacitance of reactive compensation capacitor bank is measured without removing stitches Capacitance range：0.1μF ～ 2,000μF |
HYG-300Automatic capacitance and inductance tester | ||
| High voltage switch mechanical characteristic measurement | HYG-2008High voltage switch dynamic characteristic tester | ||
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Transformer short-circuit impedance and load loss, no-load current and no-load loss measurement Current measuring range：0.5A～60A Voltage range：10V～650V |
HYG-400ATransformer no-load load characteristic tester | ||
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Vacuum degree of vacuum circuit breaker Measuring range：10-5 ～ 10-1 Pa |
HYG-2010Vacuum switch vacuum test | ||
| Test voltage measurement (measuring range 0-300kv accuracy 0.5%) | HYG-300kVAc-dc voltage divider | ||
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CTUpwl check, including 2 2.5m current lines （Maximum output 5000A gauge head accuracy 1.5%） |
HYG-5000AHigh current generator | ||
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Wireless detection line phase Angle, frequency, voltage waveform (phase difference measurement accuracy：± 3 degree frequency accuracy：±1Hz；） |
HYG-110kVHigh pressure nuclear phase equipment | ||
| Frequency response method and plane phase method | HYG-IIArrester discharge counter | ||
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The measurement temperature control range of gas composition in transformer oil：
Column room: room temperature +15℃ - 399℃
Vaporization chamber: room temperature +30℃ - 399℃
Reformer: room temperature +30℃ - 399℃
Thermal conductivity detector: room temperature +30℃ - 399℃
Hydrogen flame detector: room temperature +30℃ - 399℃
Accuracy: + / - 0.1 ℃
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HYG-815ATransformer oil chromatograph | ||
| Used for the determination of flash point of liquid that can form surface film of solid suspension of insulating oil under test conditions (measuring range 0-250℃ accuracy ±0.5%) | HYG-805Closed flash point meter (automatic) | ||
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The acid value of the insulating oil was measured (measurement range: 0.001~0.400mgKOH/g)
Accuracy: acid value between 0~ 0.100mgkoh /g is 0.005mgkoh /g and acid value between 0.100~ 0.400mgkoh /g is 5%)
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HYG-806Acid meter | ||
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Dielectric loss of insulating oil: capacitance: 1pF~200pF dielectric loss:
Measurement accuracy: capacitance: ± (0.5%×C+1pF) dielectric loss: ± (1%×D+0.00008) resolution: capacitance: 0.01pf dielectric loss: 1×10-5
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HYG-0810Oil dielectric loss tester | ||
| SF6 density relay calibration: lockout return value, alarm return value, overpressure return value, alarm value, lockout value, overpressure value (accuracy ±0.25%) | HYG-603ASF6Gas density relay calibrator | ||
| Detection range: 10 ~ 30 × 1/1 100 ~ 200 × 1/1 300 ~ 500 × 1/1 indication error: ≤±3% | HYG-602 High precision SF6 gas leak detector | ||
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Moisture content in SF6 gas was measured
The dew point:
Measurement range: -60 ℃ ~ +20 ℃
Measurement accuracy: ±0.5℃ (-60℃ ~ +20℃)
Response time (+20℃) : < 3 min
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HYG-606 SF6Intelligent moisture meter |
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| Insulation resistance measurement | multimeter | ||
| Test voltage measurement | QJWheatstone bridge | ||
| Dc resistance measurement | QJ44Double bridge | ||
| Dc resistance measurement | HYG-3000Digital double - clamp phase voltammeter | ||
| Current and voltage loop check | Phase sequence table | ||
| Indicates the phase sequence of the three-phase sinusoidal ac power supply | Clamp ammeter | ||
| Current measurement | HYG-Dc stabilized voltage stabilized current power supply | ||
| Secondary load measurement | HYG-Transformer secondary load tester |