Advanced Shielding Room for Partial Discharge Testing Equipment 3. *3m*3.8m

• Customization: Available
• Certification: ISO9001
• Protection: Shock Resistance
• Model NO.: KJSR-01
• Installation: Vertical
• Housing: UPR
• Specification: 380*300*300cm
• Trademark: YZKJ
• Origin: China
• Production Capacity: 300pieces/Year

Product Description

Product Description

Shielded room for power frequency test without partial discharge

The partial discharge-free power frequency test shielded room is a kind of electromagnetic shielding environment specially used for partial discharge testing of high-voltage equipment. Through a multi-layer shielding structure and a precision filtering system, it provides low-noise and high-precision testing conditions for power frequency tests.

Specification

Applications  

In power frequency partial discharge-free tests, shielded rooms can effectively isolate external electromagnetic interference, enabling high-sensitivity sensors such as high-frequency current transformers and coupling capacitors to clearly detect tiny partial discharge signals inside the equipment, thereby significantly improving the test signal-to-noise ratio. This is particularly important for factory tests of high-voltage equipment such as transformers and mutual inductors, as it can accurately detect insulation defects and avoid major safety risks.

Key Configurations

Shielding door system: adopts an electric bolt-embedded design, with a door opening size of 1.5 meters × 2.0 meters, and is equipped with a multi-level comb-shaped finger reed structure to ensure the shielding effect at the door gap. 

Ventilation and interface: uses a "waveguide cutoff" type ventilation window, and the honeycomb waveguide array structure can severely attenuate electromagnetic wave energy while ensuring air circulation. 

Filter configuration: includes an air conditioning filter (380V/100A), a lighting power filter (220V/50A), a grounding filter (100A), and 2 channels of equipment signal filters.

Technical Specifications

(Custom configurations available upon request.)

Shielding Effectiveness	Door ≥60dB, Wall ≥70dB, within the bandwidth range of 0.5MHz to 2MHz (PD measurement bandwidth 20kHz to 500kHz)
Background Noise	Ensure that the background partial discharge in the shielding room is <0.5pC
Grounding Requirement	Ground resistance <0.5Ω, adopting single-point grounding method
Shielding Performance	- Magnetic field shielding effectiveness ≥ 60dB at 10kHz-100kHz - Electric field shielding effectiveness ≥ 60dB at 100kHz-1GHz - Partial discharge background noise ≤ 1pC under no-load test circuit condition
Mechanical Performance	- Steel plate unevenness ≤ 4mm/M² - Shielding body perpendicularity ≤ 5mm - Top sag ≤ 8mm - Bottom depression ≤ 3mm

Drawings & Design

Company Profile

Yangzhou Kejia Electronic Equipment Co., Ltd.

 Yangzhou Kejia Electronics is a leading Chinese manufacturer of high-voltage testing equipment, specializing in partial discharge (PD) detection systems. With over four decades of innovation, our "KJF" series products—including PD detectors, digital testing systems, and PD-free test equipment—serve industries from power utilities to transformer/switchgear manufacturing.
Innovation Driven by Experience
Our R&D team (backed by university partnerships) has secured 30+ patents, ensuring reliability and precision. Trusted by 100+ Chinese giants like Shenyang Transformer Research Institute and Xi'an High Voltage Switch Factory, our solutions also export to Korea, India, and beyond, earning a reputation for "zero-compromise quality."
Service Beyond Machines
With a 50-strong team, we offer tailored solutions, rapid prototyping, and 24/7 support. Our promise: "Choose Kejia, Choose Peace of Mind." Nationwide service hubs ensure quick delivery and on-site testing, turning every project into a long-term partnership.
Based in Yangzhou, Powering the World
Factory Address: No. 177 Shouxihu Road, Yangzhou
For four decades, we've been transforming electrical safety—one reliable test at a time.

After Sales Service

Standard Warranty: 12 months or 2,000 operating hours (whichever comes first).
Extended Warranty: Optional coverage up to 36 months.
Global Support: 24/7 technical assistance and spare parts supply.
Training: On-site or remote operation/maintenance training.

Why Choose Us?

Other Products

OEM/ODM capabilities
Competitive pricing & bulk discounts
Fast shipping & customs clearance support
Turnkey project solutions

IMPULSE VOLTAGE TEST SYSTEM
AC VOLTAGE TEST  TRANSFORMERS
REGULATING TRANSFORMER
RESISTORS
CORONA RINGS AND
SHIELDED PARTS

FAQ

Q: What's the lead time for orders?
A: Standard models ship in 15–30 days; customized units require 30–45 days.
 
Q: Do you provide after-sales service overseas?
A: Yes, we have partnered service centers in key regions.
 
Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).
 
Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.