絶縁油耐圧試験器 YDJ

DC高電圧携帯型

Product Introduction
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.

Product Characteristics

• Superior Material & Reliable Quality – Carefully selected materials for reliable quality and operational stability.
• High Voltage Margin & Low Partial Discharge – Designed with a large voltage margin, compact corona ring and minimal partial discharge levels.
• Compact & Lightweight Design – Uses advanced insulation materials for a smaller footprint and improved portability.

Technical Parameters (excerpted table)
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 V | 15 A | 500 | 10
YDJ-5/50 | 5 | 50 | 100 | 200 V | 25 A | 500 | 10
YDJ-10/50 | 10 | 50 | 200 | 200 V | 50 A | 500 | 10
YDJ-20/50 | 20 | 50 | 400 | 200 V | 50 A | 500 | 10
YDJ-30/50 | 30 | 50 | 600 | 200 V | 50 A | 500 | 10
YDJ-50/50 | 50 | 50 | 1000 | 200 V | 125 A | 500 | 10
YDJ-5/100 | 5 | 100 | 50 | 200 V | 25 A | 1000 | 10
YDJ-10/100 | 10 | 100 | 100 | 200 V | 25 A | 1000 | 10
YDJ-10/25 | 10 | 25 | 400 | 200 V | 25 A | 1000 | 10
YDJ-20/100 | 20 | 100 | 200 | 200 V | 50 A | 1000 | 10
YDJ-30/100 | 30 | 100 | 300 | 200 V | 75 A | 1000 | 10
YDJ-50/100 | 50 | 100 | 500 | 200 V | 125 A | 1000 | 10
YDJ-15/150 | 15 | 150 | 100 | 400 V | 37.5 A | 1000 | 10
YDJ-20/150 | 20 | 150 | 133 | 400 V | 50 A | 1000 | 10
YDJ-30/150 | 30 | 150 | 200 | 400 V | 75 A | 1000 | 10
YDJ-50/150 | 50 | 150 | 333 | 400 V | 125 A | 1000 | 10
YDJ-100/150 | 100 | 150 | 667 | 400 V | 250 A | 1000 | 10
YDJ-50/200 | 50 | 200 | 250 | 400 V | 125 A | 1000 | 10
YDJ-100/200 | 100 | 200 | 500 | 400 V | 250 A | 1000 | 10
YDJ-150/200 | 150 | 200 | 750 | 400 V | 375 A | 1000 | 10
YDJ-200/200 | 200 | 200 | 1000 | 400 V | 500 A | 1000 | 10
YDJ-300/200 | 300 | 200 | 1500 | 400 V | 750 A | 1000 | 10
YDJ-50/300 | 50 | 300 | 170 | 400 V | 125 A | 1000 | 10
YDJ-100/300 | 100 | 300 | 333 | 400 V | 250 A | 1000 | 10
YDJ-150/300 | 150 | 300 | 500 | 400 V | 375 A | 1000 | 10
YDJ-200/300 | 200 | 300 | 667 | 400 V | 500 A | 1000 | 10
YDJ-300/300 | 300 | 300 | 3000 | 400 V | 750 A | 1000 | 10

Comparison of Advantages and Disadvantages of Various Test Transformers
Types: Oil immersed test transformer | Dry type test transformer | Inflatable test transformer
Advantages: Strong insulation performance; high heat dissipation efficiency; low cost and mature technology | Small size, light weight, easy to move; no oil leakage risk; easy maintenance | High insulation strength; suitable for harsh environments; low partial discharge and more accurate test data
Disadvantages: Large volume, heavy, requires regular maintenance (oil change, leak detection); risk of oil leakage | Insulation affected by humidity, limited heat dissipation, higher cost in high-voltage scenarios | Very high cost (SF6), gas leakage risk, requires specialized maintenance

Main application scenarios

• Power system testing: testing transformers, switchgear, relays, and transmission lines under high voltage/high current.
• Insulation material testing: voltage withstand tests on cables, insulators, transformer windings.
• Voltage withstand test: partial discharge and leakage current tests to evaluate insulation level.
• Fault simulation testing: short circuit, overvoltage and frequency response testing for stability and protection verification.
• Electronic device testing: testing electronic components or circuits in liquid media.
• Mechanical engineering applications: simulate wear/friction in lubricating/hydraulic oil environments.
• Materials science research: testing corrosion resistance or high-temperature resistance in closed oil environments.
• Automotive industry applications: evaluate components under lubricating oil or preservative exposure.
• Medical equipment testing: simulate physiological-fluid-like immersion conditions for compatibility and reliability checks.

Frequently Asked Questions
Q: What is the most easily overlooked fatal detail before operation? A: The shell and iron core must be grounded at one point, grounding resistance should not exceed 0.5 Ω. Ensure the X terminal of the low-voltage winding (input side) is connected; check insulation oil level to avoid exposing high-voltage lead to air.

Q: The voltage cannot rise during the experiment, but the voltage regulator has reached its maximum. Why? A: Common reasons include: 1) large voltage drop on the power supply line (thin wire or long distance) leading to insufficient input voltage; 2) severe breakdown of the test sample forming a short circuit with a surge in leakage current; 3) poor contact of carbon brush or broken winding of voltage regulator.

caractéristiques / spécifications techniques

• Modèle (série): YDJ Pointer
• Capacité principale (exemple produit présenté): 5 kVA (modèle YDJ-5/50)
• Tension de sortie haute nominale (YDJ-5/50): 50 kV
• Courant haute tension nominal (YDJ-5/50): 100 mA
• Tension d'entrée nominale (exemple tableau): 200 V
• Courant d'entrée (exemple tableau): 25 A
• Ratio de transformation (exemple tableau): 500 / 1000 selon modèle
• Élévation de température (30 minutes): typ. 10 ℃ selon modèle
• Interface: affichage analogique à aiguille (pointer)
• Isolation: huile immergée pour dissipation thermique et isolation fiable