HK-12/F shared-box type gas-filled cabinet
Short Description:
Model:HK-12/F co-box typeTechnical standards:The ring main unit complies with the relevant national standards, industry standards, IEC298 standards, as well as the Italian CEI17.1 and DPR547 standards. GB156—1993 Standard VoltageGB311.1—1997 Insulation Coordination for High-Voltage Transmission and …
Product details
Model:
HK-12/F co-box type
Technical standards:
The ring main unit complies with the relevant national standards, industry standards, IEC298 standards, as well as the Italian CEI17.1 and DPR547 standards.
GB156—1993 "Standard Voltage"
GB311.1—1997 "Insulation Coordination for High-Voltage Transmission and Transformation Equipment"
GB311.2~311.6-1983 "High Voltage Testing Technology"
GB1408—1989 "Test Method for Power Frequency Electrical Strength of Fixed Insulating Materials"
GB2900.1—1982 "Electrotechnical Terminology - Basic Terminology"
GB3309—1989 "Mechanical Testing of High-Voltage Switchgear at Room Temperature"
GB3804—1990 "3~63kV AC High-Voltage Load Switch"
GB7354—1987 "Partial Discharge Measurement"
GB/T11022—1999 "Common Technical Requirements for High-Voltage Switchgear and Controlgear Standards"
GB14808—1993 "AC High-Voltage Contactor"
GB16926—1997 "High-Voltage AC Load Switch-Fuse Combination Apparatus"
SD/T318—1989 "Technical Conditions for Locking Devices of Ring Main Units"
DL/T402—1999 "Technical Conditions for Ordering AC High-Voltage Circuit Breakers"
DL/T486—200 Technical Conditions for Ordering AC High-Voltage Disconnectors and Earthing Switches
DL/T539—1993 "Technical Conditions for Condensation and Pollution Testing of Indoor AC Ring Main Units and Components"
DL/T593—1996 "Common Technical Guidelines for Ordering High-Voltage Switchgear"
DL/T404—1997 "Technical Conditions for Ordering Indoor AC High-Voltage Switchgear"
Technical conditions (conditions of use):
Installation location: Outdoors
Ambient temperature: -35℃~+50℃
Altitude: ≤1000m
Humidity: Monthly average relative humidity of 90%, daily average relative humidity of 95%
Seismic intensity: ≤8 on the scale
Pollution level: Level III
Technical Specifications:
Technical description:
1. The enclosure of the ring main unit is made of stainless steel, featuring a fully sealed and insulated structure with a thermal insulation layer on the top. The outer layer is painted in military green. Stainless steel hinges are used, and the door lock is designed for universal access by personnel, requiring no maintenance for an extended period. The box structure can withstand the electrodynamic forces generated during operation.
2. The ring main unit adopts an SF6 fully gas-filled structure, with eight circuits realized by the bus tie of two four-circuit gas-filled cabinets. It is equipped with a manual operating mechanism to facilitate future electric upgrades. On the front of the cabinet, there are operating mechanisms, mimic diagrams, and live displays.
3. The load switch is a three-position switch with three positions: "closed", "open", and "grounded". It is a combined logic sequential operating mechanism with natural "five-prevention" locking function, which can prevent misoperations and requires no maintenance for 20 years.
4. The incoming and outgoing lines utilize 600A fixed cable connectors, suitable for cable cross-sections ranging from 50 to 400 mm2. The cable connectors are made of silicone rubber, fully insulated, fully sealed, and touchable, with appropriate space reserved in the cabinet for cable head connections. The reserved circuits are equipped with protective caps.
5. Install lightning arresters on the incoming lines.
6. Each incoming and outgoing load switch has been equipped with a live display.
7. In interlocking, the grounding switch can only be closed when the load switch is opened; similarly, the load switch can only be closed after the grounding switch has been opened.
