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China, Chinese GDYT-5/50 5kVA/50kV PD Free Test System for Lightning Arresters1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Products Details Supplier Manufacturer price list catalog
Electronic InstrumentPartial Discharge Test SystemPD Test
HV Hipot Electric Co., Ltd.
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Product Description GDYT-5/50 5kVA/50kV PD Free Test System for Lightning Arresters It is mainly used for testing frequency voltage insulation level of various insulation materials, insulation structure and electrical products, also as partial discharge frequency testing power supply for testing object such as transformer, mutual inductor and lightning arresters. It widely used in electrical manufacturing, power operation departments, research institutes and universities.I. GDYT System 5kVA/50kV compositionHipot Test Control Table GDYD-5/50 PD-free Gas type transformer YDQW-5/50 Coupling capacitor TAWF-50kV Protective resistor GR50kV Isolation filter LBQ-5kVA Partial discharge detector Other accessories Hipot control Unit (GDYD-5/50) and PD-free testing transformer are controlling and voltage boosting for test object which boosted to the rated voltage.Partial discharge detector is detecting and displaying partial discharge capacity.Isolation filter(LBQ-5kVA) is device of anti-interference caused by power supply.Coupling Capacitor is transmitting partial discharge signal to partial discharge detector.II. System principle diagramK1: Circuit breaker TY: Voltage regulatorGK: Compensation reactorLBQ: Anti-interference filterTPU: Fast Over-voltage protection device(Optional)B1: Testing transformerR: Protective resistorKZ: Control tableC1&C2: Capacitive divider with Coupling capacitorIII. System Specifications Power supply:220V±10%,50HzRated Capacity: 5kVA Output Voltage: 50kV, current: 100mA Input Voltage: 200V, current: 25A Short-circuit impedance: <18%Operation time: 30mins@100% rated voltage and current. Continuous working@ 2/3 rated voltage and current.Wave form distortion rate:<3% when voltage regulator input voltage distortion rate <3%.PD value:≤5pC @ 100% rated voltageIV. Specifications for each parts Control UnitFeatures Digital display meters mounted on the panel.Monitoring HV side voltage, HV side current, LV side current and indicator of zero, power, working start, timing.Over-current protection, zero-starting protection,sound and light alarm.With new type time relay, time rang is more wider (1S ~ 99H).Using the latest current relay, more accurate and reliable.Light weight, small size, easy to move.Specifications Power: AC220V±10%,50HzCapacity: 5kVAOutput voltage: AC 0-200V Rated output current: 25ARated current rectified range:0-25AHV voltmeter range: 0-60kV Accuracy: 1.5% of the reading±2digit(F.S)HV ammeter range: 0-80mA Accuracy: 1.5% of the reading±2digit(F.S)LV ammeter range: 0-25A Accuracy: 2.0% of the reading±2digit(F.S)Timing range:1s-99hWeight: 18kgDimension: 440mm (L)*340mm (W)*240mm (H)2. PD-free Gas testing transformer (HV unit) specifications Rated capacity: 5kVAInput voltage: 0-200VInput current: AC 0-25AOutput voltage: AC 0-50kVOutput current: AC 100mAVoltage accuracy: AC 1.5%PC value on rated voltage: ≤5pcVoltage distortion factor: <3%Insulation dielectric: SF6 gasWeight: about 50kg. Coupling capacitor TAWF-50 Rated frequency: 50HzStandard capacitance: 800pF±10%Rated voltage: 50kVVoltage ratio: 1000/1Dielectric loss: <0.5%Measurement accuracy: 1%Permitted operation time: same with testing transformerPD value: ≤8pc on 100% of rated voltage, ≤5pc on 80% of rated voltage. Protective resistor GR50kV Rated frequency: 50HzRated voltage: 50kVResistance: 5kohmRated current: 0.5APermitted operation time: same with testing transformer Isolation filter LBQ-5kVA With L-C filter loop circuit, and built-in filter compensation deviceRated capacity: 5kVARated voltage: 200VRated current: 25ANo-load consumption: ≤5%Impedance voltage: ≤5%Attenuation: 40kHz-100kHz ≥40dB 100kHz-1.5Mhz ≥60dBPermitted operation time: same with testing transformer PD DetectorGDJF-2008 Partial Discharge Detector is measuring partial discharge for the products such as transformers, mutual inductors, HV switches, zinc monoxide arresters and power cables. It also can make type tests and monitor insulation operation.This type has the advantages of high sensitivity, wide range of capacitance, being well equipped for input unit impedance detecting and more variants of frequency bands ( 9 in all). After proper setting, the discharge impulse amount can be read directly. The indicating and digital meters are shown simultaneously.This detector is widely applied in power stations, manufacturers and institutions.Use Condition Ambient temperature: 0-40oC±2oC.Relative humidity: ≤80%Power supply: 220V±10%,50HZ.No violent vibration and mechanical shockThe device should be placed in the environment with no dust and corrosive, good ventilation. It should not be interfered by strong electromagneticEarthing requirements: earthing resistance <1ΩCapacitance range to be tested6PF-250μFTesting sensitivity (shown in Table.1) Input unitNo.Tuning capacitanceUnitSensitivity(pC)(Unsymmetrical circuit)16-25-100pF0.02225-100-400pF0.043100-400-1500pF0.064400-1500-6000pF0.151500-6000-25000pF0.260.006-0.025-0.1mF0.370.025-0.1-0.4mF0.580.1-0.4-1.5mF190.4-1.5-6.0mF1.5101.5-6.0-25mF2.5116.0-25-60mF51225-60-250mF107RResistance 0.5Table 1Amplifier band Low terminal: 10KHZ, 20 KHZ, 40 KHZ (optional)High terminal: 80 KHZ, 200 KHZ, 300 KHZ (optional)Amplifier gain adjustment Coarse control - there are 6 gears for coarse tuning, the gain of each gear is 20±1dbFine control ≥ 20 dbTime windows Width of window, adjustable 15o-150oWindow position, adjustable 0o-170oTwo windows can be opened simultaneously or separately.Discharge meter Digital displayPD display: LED 3? digits0-100.0 limit of error <±3% (full scale)Ellipse time base Frequency: 50Hz and arbitrary frequencyElliptic display color is yellowElliptic rotation: each gear is 30°, 180 ° rotation can be made.Display: ellipse - straight lineHigh frequency time base elliptical input voltage less than 220 V, intake power < 1 VA Waveform lockLock required waveform of any time to facilitate observation and analysisTesting Voltage meter Range: 100KV (Can be expanded)Display 31/2 digital voltage meterAccuracy: better than ±2% (full scale)
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