HJ-OFP-S Series Cable Branch Box (with Load Break Switch)

Name: HJ-OFP-S Series Cable Branch Box (with Load Break Switch)
Brand: HJATIS

The HJ-OFP-S Series Cable Branch Box is an outdoor medium-voltage distribution node with an integrated SF6 Load Break Switch (LBS). It provides active load switching and fault isolation for underground cable networks. Rated voltage is 12kV (24kV available on request), rated current 630A, short-time withstand 20kA/4s, and peak withstand 50kA. Enclosure protection is IP54, internal gas tank IP67. Configurations range from 1-in 1-out to 6-way.

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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 available upon request)
Rated Current	630A (Main & Branch)
Rated Active Load Breaking Current	630A
Rated Closed-Loop Breaking Current	630A
Cable Charging Breaking Current	45A
Withstand & Protection Ratings
Short-Time Withstand Current	20kA (4s)
Peak Withstand Current / Short-Circuit Making	50kA
Power Frequency Withstand Voltage (1 min)	42kV (Phase-to-Phase/Ground) / 48kV (Across open contacts)
Lightning Impulse Withstand (BIL)	75kV (Phase-to-Phase/Ground) / 85kV (Across open contacts)
Mechanical Endurance (LBS)	5,000 Operations
Standard Branching Configurations	1-in 1-out, 1-in 2-out, 2-in 2-out, 2-in 4-out, up to 6-way
Enclosure Protection Degree	IP54 (Outer Enclosure) / IP67 (Internal Gas Tank)

CONFIGURATION

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ParameterCatalogue indicationProject input required

01Rated Voltage (Ur)12kV / (24kV available upon request)Specify required system voltage (12kV or 24kV).

02Rated Current (Main & Branch)630AConfirm if 630A meets load requirements.

03Short-Time Withstand Current20kA (4s)Verify system short-circuit level.

04Enclosure Protection DegreeIP54 (Outer Enclosure) / IP67 (Internal Gas Tank)Specify environmental conditions for enclosure selection.

05Standard Branching Configurations1-in 1-out, 1-in 2-out, 2-in 2-out, 2-in 4-out, up to 6-wayDefine number of incoming and outgoing feeders.

STANDARDS & REPORTS

Standards and product documents.

Applicable references: GB/T 3906 and IEC 62271-200 and GB/T 3804 and IEC 62271-103. 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

Questions for your application.

Utility and industrial distribution

What are the feeder rating and fault level at the installation point? Send the protection scheme with the enquiry.

Renewable-energy collection networks

Will the device switch cables, transformers or other plant loads? State the switching duty and required control signals.

TECHNICAL LIBRARY

Product documents

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All documents

Test report2017

HJ-OFP-S — Test report

Reported model DFW-12/630-20

12 kV / 630 A / 20 kA

Report no.: 17Q2391-S
Test basis: GB 3906-2006 · GB 3804-2004

Load-break-switch cable branch box. Applies to the reported 12 kV configuration.

65 pages·43.1 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.