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750kVA/350kV AC High Voltage Test System for Transformers & Insulators (Withstand / PD / Dielectric Loss)

Ensure absolute reliability in high-voltage equipment with YIBO’s 750kVA/350kV AC High Voltage Test System. Engineered for transformer manufacturers and electrical labs, this integrated system performs critical AC withstand voltage, PD, and dielectric loss measurements. Featuring the YWDT-700/350 testing transformer, TRF capacitive divider, DBK compensating reactor, and intelligent AC-2000 measurement & control, it delivers precise, repeatable results. Designed for indoor operation (altitude <1000m, -10~+40°C), it combines 23+ years of YIBO expertise with ISO/CE standards, trusted by ABB, CRRC, and CASC. Ideal for switchgear, insulators, and instrument transformers.

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Description

1. Core Features & Advantages

Comprehensive Testing: AC withstand voltage, Partial Discharge (PD), dielectric loss (tanδ), and other HV tests.
Complete System Integration: Includes testing transformer, voltage regulator, capacitive divider, compensating reactor, protective resistor, filter, and AC-2000 control system.
High Precision & Safety: Low waveform distortion (<3%), reliable grounding (<0.5Ω), anti-earthquake ≤Class 7, with front/rear LV switch cabinets.
Wide Application: Transformer, bushing, switchgear, instrument transformer (CT/PT), insulator, insulating materials.
Indoor Design: Requires 380V power supply; operates in non-corrosive, dust-free, explosion-proof environment.

2. Key Technical Parameters

Parameter	Specification
System Rating	750 kVA / 350 kV
Testing Transformer	YWDT-700/350
Voltage Regulator	TDYZ-250/0.38/0-0.65
Capacitive Divider	TRF 350-0.0004
Compensating Reactor	DBK-500/0.6
Protective Resistor	GWR350-5-2
Filter	LBQ-700/0.6
Control System	AC-2000 Measurement & Control
Application	AC Withstand, PD, Dielectric Loss
Environment	Indoor, Altitude <1000m, -10~+40°C, Humidity ≤90% (25°C)
Power Input	380V, Sine wave distortion <3%
Grounding Resistance	<0.5 Ω
Anti-Earthquake	≤ Class 7

3. Main Components List

Component	Model / Spec
Testing Transformer	YWDT-700/350
Voltage Regulator	TDYZ-250/0.38/0-0.65
Capacitive Divider	TRF 350-0.0004
Compensating Reactor	DBK-500/0.6
Protective Resistor	GWR350-5-2
Filter	LBQ-700/0.6
Control & Measurement	AC-2000 System
LV Switch Cabinet	Front/Rear
Accessories	Control cables, grounding system

4. Operating Conditions

Altitude: <1000m
Ambient Temp: -10℃ to +40℃
Humidity: ≤90% at 25℃; Max daily temp difference 15℃
Atmospheric Humidity: 11g/m³
Environment: Indoor, no conductive dust, no fire/explosion risk, no corrosive gas
Power: 380V, sine waveform distortion <3%
Grounding: Reliable, resistance <0.5Ω

5. Quality Control & Manufacturer Service (YIBO)

QC: Strict raw material standards → High-precision component processing → Assembly recheck → Pre-shipment full HV testing.
Certifications: ISO9001:2020, CE/SGS/BV. Key components from Siemens/Schneider/Mitsubishi.
Track Record: 23+ years, 85%+ China market share (Top 3). Served CASC, CRRC, ABB, EATON, DELIXI, RITZ, TENGEN, Russia Military Enterprise.
Payment & Delivery: L/C, T/T, Western Union; ~90 working days after advance.
Warranty: 12 months (from Acceptance Report, max 14 months from delivery).
Support: Optional overseas installation & training, 24-hour response, video guidance.

→ Contact our engineering team for custom HV test system configurations (capacity, voltage, PD requirements) for your transformer or insulator testing needs.

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