Our 12kV/24kV indoor SF6 gas-insulated ring main unit (outlet bay) is factory certified medium-voltage switchgear built for stable, low-maintenance power distribution. Equipped with a three-position load break switch and 5-point mechanical interlock, it eliminates misoperation risks and meets global five-prevention safety standards.
All live conductive components are fully encapsulated in SF6 insulating gas, isolating from dust, moisture and corrosive gas. The compact footprint saves over 40% installation space compared with air-insulated switchgear, ideal for narrow underground substations and building power rooms.
Three-position load break switch supports open / closed / earthing three states, matched with multi-group mechanical interlocks to forbid illegal earthing and live door opening. For fully automatic electromagnetic cabinet locking control, you can equip the cabinet with 7SN8D-Q VPIS with 5A interlock relay output to form an electrical safety interlock loop.
Single outlet bay can be freely combined with feeder bay, transformer bay and metering bay to customize substation layout. Standard unified panel cutout reserves mounting position for 7SN8D-T passive VPIS voltage indicator, plug-and-play without secondary cabinet modification.
Whole cabinet adopts galvanized steel plate with anti-rust spray coating, IP65 ingress protection grade. It can run stably in humid coastal areas, chemical plants and mining industrial environments without frequent maintenance.
Reserved wiring terminals for voltage, current and fault signal collection, supporting access to intelligent power monitoring system. Cooperate with our series voltage presence indicators to realize real-time live phase visual warning for field operators.
| Parameter | Standard Specification |
|---|---|
| Rated System Voltage | 12kV / 24kV |
| Rated Normal Current | 630A / 1250A |
| Short-Time Withstand Current | 20kA / 25kA (3s duration) |
| Insulation Medium | Sealed SF6 gas |
| Cabinet Protection Degree | IP65 |
| Main Switch Type | Three-position load break switch with integrated earthing switch |
| Supporting Matching VPIS | 7SN8D-T (passive) / 7SN8D-Q (active interlock) |
| Operating Frequency | 50Hz standard, 60Hz customized for overseas export |
| Operating Ambient Temp | -30℃ ~ +55℃ |
| Compliance Standard | IEC 62271, DL/T industry standard, ISO9001 factory certified |
Compact SF6 sealed design fits underground pipe gallery and high-rise building power rooms, widely used in municipal power grid transformation projects.
Low maintenance, high safety performance matches distributed new energy power stations, stable operation under long-term unattended working conditions.
Suitable for chemical plants, steel mills, mines and large data center HV power distribution rooms, resisting complex harsh on-site environment.
Modular combination supports energy storage microgrid power supply switching, realizing flexible power dispatching and grid connection.
1. The cabinet reserves standard mounting hole for our VPIS series voltage display; choose passive 7SN8D-T for basic visual indication, or 7SN8D-Q interlock type if electromagnetic lock linkage is required.
2. The whole set of cabinet internal wiring harness can be customized according to customer secondary drawing, we provide free wiring schematic.
3. SF6 gas inflation and leakage detection equipment can be matched as supporting spare parts for after-sales maintenance.
4. Mechanical interlock latches are standard equipped; electromagnetic lock accessories are optional for full automatic anti-misoperation protection.
We offer comprehensive OEM and ODM services tailored to global switchgear integrators, EPC contractors and power distributors:
1. ISO9001 certified factory whole-process production inspection, every cabinet passes factory withstand voltage and interlock function test before delivery.
2. Full matching supporting accessories supply: VPIS voltage indicator, earthing switch, interlock lock, capacitive sensor one-stop procurement.
3. Stable raw material supply, sufficient stock of standard models, fast delivery within 7 working days for small orders.
4. Professional electrical engineer team provides remote on-site installation guidance for overseas projects.
5. Strictly implement IEC international standards, products pass third-party testing, eligible for global utility tender projects.
A: Two matching models for option: 7SN8D-T passive VPIS without auxiliary power, only visual display; 7SN8D-Q active VPIS with relay output to control electromagnetic safety locks.
A: Two matching models for option: 7SN8D-T passive VPIS without auxiliary power, only visual display; 7SN8D-Q active VPIS with relay output to control electromagnetic safety locks.
A: Yes, we can adjust internal circuit components for 60Hz grid, no extra MOQ surcharge for bulk project orders.
A: Standard model is indoor IP65 type; outdoor anti-rain & anti-sun customized cabinet is available on request.
A: All our XGN15 series switchgear meet IEC 62271 standard, we can provide complete CE DoC, factory test reports and ISO certification documents for free.
The XGN15-12 is a compact Ring Main Unit primarily used in secondary distribution networks, while the KYN28 is a withdrawable metal-clad switchgear commonly applied in primary distribution systems. XGN15-12 occupies less floor space, requires lower maintenance, and is well suited for compact substations.
KYN28 offers greater flexibility for larger substations and higher-capacity applications where frequent breaker maintenance is required.
Get XGN15-12 datasheet, cabinet layout drawing, bulk order price and matching VPIS quotation, our sales team will reply within 24 hours.
