HJ-OSS Series Outdoor Switching Station

Name: HJ-OSS Series Outdoor Switching Station
Brand: HJATIS

The HJ-OSS Series Outdoor Switching Station is a fully enclosed power distribution unit for outdoor grids up to 24kV. It uses 100% HJATIS proprietary medium-voltage components, including SF6 load break switches, VCBs, and smart controllers. The stainless steel enclosure is moisture-proof and rated IP54 (internal IP4X). It supports 3-way, 4-way, and multi-circuit ring configurations, with a rated current of 630A and short-time withstand of 20kA (4s).

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PUBLISHED PRODUCT DATA

Catalogue ratings and configurations.

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Technical Specifications

Technical Specifications
System & Power Parameters
Rated Voltage (Ur)	12kV / (24kV systems fully customizable)
Rated Current	630A
Withstand & Protection Ratings
Rated Short-Time Withstand Current	20kA (4s)
Rated Peak Withstand Current	50kA
Rated Short-Circuit Making Current	50kA
Power Frequency Withstand Voltage	42kV (Phase-to-Phase/Ground) / 48kV (Across open contacts)
Lightning Impulse Withstand (BIL)	75kV (Phase-to-Phase/Ground) / 85kV (Across open contacts)
Mechanical Endurance	5,000 Operations (Main Switch)
Internal Core Components	SF6 Load Break Switches / VCBs / Smart Controllers / (100% HJATIS Proprietary Manufacture)
Typical Layout Configurations	3-Way, 4-Way, up to multi-circuit ring setups
Enclosure Protection Degree	Standard IP54 / Internal Switchgear IP4X

CONFIGURATION

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ParameterCatalogue indicationProject input required

01Rated Voltage12kV / 24kV systems customizableSpecify system voltage (12kV or 24kV)

02Rated Current630AConfirm required current rating

03Short-Time Withstand Current20kA (4s)Verify fault level requirement

04Enclosure Protection DegreeIP54 (internal IP4X)Specify environmental exposure

05Typical Layout Configurations3-way, 4-way, up to multi-circuit ringDefine number of ways and ring configuration

STANDARDS & REPORTS

Standards and product documents.

Applicable references: GB/T 3906 and IEC 62271-200. Ask for the edition and reports covering the model offered; a standard number alone does not confirm product compliance.

PRODUCT DOCUMENTSProduct documents available

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APPLICATIONS

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Utility and industrial distribution

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Renewable-energy collection networks

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TECHNICAL LIBRARY

Product documents

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Test report2023

HJ-OSS — Test report

Reported model HJHWX-12

12 kV / 630 A / 20 kA arc test

Report no.: 23Q2493-S
Test basis: GB/T 3906-2020 · DL/T 404-2018 · DL/T 593-2016

Outdoor enclosure and specified internal-arc duties. Classification differs between cable and switch compartments; see the guide.

43 pages·2.8 MB·English guide + Chinese original

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The English guide is prepared by HJATIS; it is not a laboratory translation or an IEC certificate. Results apply to the tested sample and configuration. The original report and its stated standard editions govern.