Diélectrimètre pour huile isolante YDJ

DChaute tensionportable

Présentation du produit
The YDJ Pointer 5kVA Oil-Immersed AC Test Transformer is a traditional high-voltage testing device that utilizes oil insulation to deliver stable AC withstand voltage tests on electrical equipment. With a 5kVA capacity, it is well-suited for testing medium-sized apparatus such as transformers and cables. The pointer-style analog interface provides clear, real-time readings of voltage and current. The oil-immersed design ensures effective heat dissipation and reliable insulation performance, making this classic tester an ideal choice for industrial and laboratory applications that demand robust dielectric strength validation.

Caractéristiques du produit

• Superior material and reliable quality ensuring operational stability.
• High voltage margin and low partial discharge, compact corona ring minimizes partial discharge.
• Compact and lightweight design using advanced insulation materials for improved portability.
• Pointer-style analog instrumentation for clear, real-time voltage and current readings.
• Oil-immersed insulation for effective heat dissipation and long-term continuous operation.

Paramètres techniques
specifications and models | capacity(kVA) | High Voltage(kV) | high-tension current(mA) | input voltage tension(V) | input electricity(A) | ratio of transformation(high /rites) | temperature rise℃(30 minutes)
YDJ-3/50 | 3 | 50 | 60 | 200 | 15 | 500 | 10
YDJ-5/50 | 5 | 50 | 100 | 200 | 25 | 500 | 10
YDJ-10/50 | 10 | 50 | 200 | 200 | 50 | 500 | 10
YDJ-20/50 | 20 | 50 | 400 | 200 | 50 | 500 | 10
YDJ-30/50 | 30 | 50 | 600 | 200 | 50 | 500 | 10
YDJ-50/50 | 50 | 50 | 1000 | 200 | 125 | 500 | 10
YDJ-5/100 | 5 | 100 | 50 | 200 | 25 | 1000 | 10
YDJ-10/100 | 10 | 100 | 100 | 200 | 25 | 1000 | 10
YDJ-10/25 | 10 | 25 | 400 | 200 | 25 | 1000 | 10
YDJ-20/100 | 20 | 100 | 200 | 200 | 50 | 1000 | 10
YDJ-30/100 | 30 | 100 | 300 | 200 | 75 | 1000 | 10
YDJ-50/100 | 50 | 100 | 500 | 200 | 125 | 1000 | 10
YDJ-15/150 | 15 | 150 | 100 | 200 | 37.5 | 1000 | 10
YDJ-20/150 | 20 | 150 | 133 | 200 | 50 | 1000 | 10
YDJ-30/150 | 30 | 150 | 200 | 200 | 75 | 1000 | 10
YDJ-50/150 | 50 | 150 | 333 | 200 | 125 | 1000 | 10
YDJ-100/150 | 100 | 150 | 667 | 200 | 250 | 1000 | 10
YDJ-50/200 | 50 | 200 | 250 | 200 | 125 | 1000 | 10
YDJ-100/200 | 100 | 200 | 500 | 200 | 250 | 1000 | 10
YDJ-150/200 | 150 | 200 | 750 | 200 | 375 | 1000 | 10
YDJ-200/200 | 200 | 200 | 1000 | 200 | 500 | 1000 | 10
YDJ-300/200 | 300 | 200 | 1500 | 200 | 750 | 1000 | 10
YDJ-50/300 | 50 | 300 | 170 | 200 | 125 | 1000 | 10
YDJ-100/300 | 100 | 300 | 333 | 200 | 250 | 1000 | 10
YDJ-150/300 | 150 | 300 | 500 | 200 | 375 | 1000 | 10
YDJ-200/300 | 200 | 300 | 667 | 200 | 500 | 1000 | 10
YDJ-300/300 | 300 | 300 | 3000 | 200 | 750 | 1000 | 10

Comparison of Advantages and Disadvantages of Various Test Transformers
Type | Oil immersed test transformer | Dry type test transformer | Inflatable test transformer
Advantages | Strong insulation performance, suitable for high voltage levels; High heat dissipation efficiency, capable of long-term continuous operation; Low cost, mature technology, and high market penetration rate. | Small size, light weight, easy to move and use outdoors; No oil leakage risk, good environmental friendliness; Easy maintenance, only requiring regular cleaning and inspection. | High insulation strength, capable of achieving miniaturized design; Strong anti pollution ability, suitable for harsh environments such as humidity and dust; Low level of partial discharge and more accurate test data.
Disadvantages | Large volume, heavy weight, inconvenient transportation and installation; Regular maintenance required (oil change, leak detection), higher maintenance costs; Risk of oil leakage, limited in scenarios requiring high environmental friendliness. | Insulation performance greatly affected by environmental humidity; Limited heat dissipation capacity, not suitable for long-term high load operation; Higher cost than oil immersed in some cases. | Very high cost, requires special treatment for SF6 gas; Risk of gas leakage requires strict monitoring; Maintenance requires professional equipment and high technical threshold.

Principaux scénarios d'application

• Power system testing: testing transformers, switchgear, relays, and transmission lines by applying high voltage and high current.
• Insulation material testing: voltage withstand tests on cables, insulators, transformer windings, etc.
• Voltage withstand test: partial discharge and leakage current tests to evaluate insulation level.
• Fault simulation testing: short circuit testing, overvoltage testing, frequency response testing.
• Electronic device testing: testing components or circuits in liquid media to ensure reliability under immersion.
• Mechanical engineering applications: simulate wear and friction in oil media to evaluate component lifespan.
• Materials science research: performance testing in specific environments such as corrosion or high temperature resistance.
• Automotive industry applications: evaluate components that must withstand lubricating oil environments.
• Medical equipment testing: simulate physiological fluid conditions to evaluate compatibility and safety.

Foire aux questions
Q: What is the most easily overlooked fatal detail before operation? Answer: The shell and iron core must be grounded at one point and grounding resistance should not exceed 0.5 Ω. Also check insulation oil level; if too low the high-voltage lead may be exposed to air and must be discharged before boosting.
Q: The voltage cannot rise during the experiment though voltage regulator at maximum. Why? Answer: Common reasons include excessive voltage drop of power supply line, severe breakdown of test sample forming a short circuit (leakage current surges), or poor contact of carbon brush or broken winding of voltage regulator.

Caractéristiques / spécifications techniques

• Modèle de série: YDJ Pointer (YDJ series)
• Capacité nominale (exemple produit présenté): 5 kVA (YDJ-5/50)
• Tension haute (exemple YDJ-5/50): 50 kV
• Courant haute tension (exemple YDJ-5/50): 100 mA
• Tension d'entrée: 200 V
• Intensité d'entrée: 25 A
• Ratio de transformation (exemple): 500 ou 1000 selon modèle
• Montée en température (30 minutes): typ. 10 ℃
• Type d'isolation: immergé dans l'huile
• Affichage: instrumentation analogique à pointeur
• Applications: essais diélectriques, tests d'endurance, simulation de défauts, essais de matériaux et composants.