Voltage-class selection
24kV Ring Main Unit Selection Guide
Define insulation, current and fault duty, feeder functions, switching technology, protection, metering, terminations, enclosure, and tests.
Read the guide Product Categories
Documents
Ring Main Unit Manufacturer
Ring Main Units
A ring main unit is compact medium-voltage switchgear used in loop distribution networks to control, isolate, and protect power feeders. Jinxing Electric manufactures RMU switchgear for substations, urban distribution systems, commercial buildings, and industrial medium-voltage networks.
Product Overview
Ring main units are used in secondary distribution networks where compact size, feeder switching, and reliable isolation are required.
Jinxing Electric supports RMU configurations for utility, commercial, industrial, and infrastructure power distribution projects.
Before Selecting a Model
- Confirm the actual system voltage and required capacity or feeder duty.
- Provide the site conditions, single-line diagram and installation constraints.
- Match drawings and test-document scope to the quoted model.
Typical Applications
- Urban medium-voltage distribution networks
- Compact substations
- Commercial buildings and infrastructure
- Industrial feeder isolation and protection
Models in This Category
12kV Ring Network Cabinet
12kV class ring network cabinet for secondary distribution networks.
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JXW-12/JXW-24/JXW-40.5 Compact RMU
Integrated RMU series for compact medium-voltage distribution.
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HXGN Ring Main Unit
HXGN ring-network switchgear for compact medium-voltage distribution.
View DetailsModel Comparison
| Model | Voltage / Rating | Typical Application | Proof / Document |
|---|---|---|---|
| 12kV Ring Network Cabinet | 12kV class | Urban distribution, substations, feeder switching | Project documents on request |
| JXW-12/JXW-24/JXW-40.5 Compact RMU | 12kV / 24kV / 40.5kV | Loop networks, substations, urban distribution | RMU technical assets available |
| HXGN Ring Main Unit | 12kV / 24kV / 40.5kV | Ring-network distribution and compact substations | HXGN 12kV sample certificate; scope to confirm |
Technical Resource Hub
Selection, Testing, and Procurement Guides
Use these guides to define a complete specification before comparing suppliers. Each guide connects an engineering or procurement decision to the matching Jinxing product range and quotation inputs.
Supplier evaluation
Ring Main Unit Manufacturers Checklist
Match voltage, current, fault duty, feeder arrangement, insulation, earthing switch, interlocks, cable compartment, protection, tests, and drawings.
Read the guide RFQ checklist
40.5kV Compact RMU RFQ Checklist
Prepare a 40.5kV RMU inquiry with fault duty, feeder functions, switching, earthing, protection, metering, terminations, interlocks, environment, and drawings.
Read the guide Commissioning
Ring Main Unit Commissioning and Testing Checklist
Verify drawings, ratings, cables, earthing, insulation, mechanisms, interlocks, indications, protection, metering, operating sequence, and records.
Read the guideStandards and Documents
Standards and sample files are references for technical review. Ask which edition, model, rating and tests apply to the quoted configuration.
- IEC 62271 reference support
- GB/T 3906
- Project test documents on request
Procurement Support
For a useful first response, share the single-line diagram, voltage class, transformer capacity or feeder duties, destination country, applicable standard, quantity, and required delivery date.
- Transformer: HV/LV voltage, kVA or MVA, frequency, vector group, impedance, and tapping
- Switchgear or RMU: voltage, current, fault duty, feeder schedule, protection, and cable entry
- Project: site conditions, drawings, inspection documents, quantity, destination, and delivery target
FAQ
What is an RMU used for?
An RMU is used to switch, isolate, and protect medium-voltage feeders in ring or radial distribution networks.
Which voltage classes can be discussed for RMU projects?
Common configurations include 12kV, 24kV, and 40.5kV classes, depending on local grid and project requirements.
What information is needed for an RMU inquiry?
Please provide voltage class, number of functional units, incoming/outgoing feeder requirements, protection type, standard, and installation environment.
Need a complete datasheet, drawing, or quotation? Contact Jinxing Electric with your project requirements.