Hộp nối cáp 35kV được sản xuất bởi nhà cung cấp Trung Quốc Kexun là một loại thiết bị khai thác cáp cho hệ thống phân phối điện áp trung bình và cao, phù hợp với mức điện áp 35kV (điện áp hoạt động cao nhất là 40,5kv Các lĩnh vực khác. Mô hình: 35kV Thương hiệu Kexr Kexr
▶Rated voltage: 35kV (conforming to IEC 62271-200 and GB/T 11022 standards).
▶Full insulation and full sealing: solid insulation (such as epoxy resin and silicone rubber) or SF6 gas insulation is adopted, and there is no bare conductor, with protection grade of IP65/IP67.
▶European plug-in technology: standard shielded plug-in cable connectors ( support live operation (special tools are required).
▶Modular design: the incoming and outgoing lines can be flexibly expanded (such as 1 in, 3 out, 2 in and 4 out).
▶Intelligent selection: fault indicator, temperature sensor, DTU (distribution terminal) can be integrated.
○Typical structural composition of the The 35kV Cable Junction Box
▶Box
Stainless steel /SMC composite material is corrosion-resistant and suitable for outdoor use (-40℃~+70℃).
▶Insulated bus
Copper or aluminum conductor, silicone rubber /EPDM insulation, power frequency withstand voltage ≥70kV, lightning impulse 170kV.
▶Cable connector
35kV shielded plug-in connectors (such as T-type and elbow-type) with test points (optional).
▶Protective device
Lightning arrester, short-circuit fault indicator and live display can be selected.
▶Grounding system
The box and cable shielding layer are reliably grounded (grounding resistance ≤4Ω).
○ 35kV Cable Junction Box installation and operation and maintenance
◆Installation requirements
Cable stripping and cutting: accurately match the joint specifications (error 1 mm) to avoid damaging the insulation layer.
▶Connector installation: Clean the contact surface and apply silicone grease to prevent oxidation. Tighten with a torque wrench (for example, T-joint needs 35 ~ 40N m).
▶Grounding: The box and cable shield must be reliably grounded (grounding resistance ≤4Ω).
◆Safe operation
▶Check the electricity after power failure, and wear insulating gloves and goggles when operating.
▶Make sure that the grounding switch is closed (if any) before plugging and unplugging the connector.
◆Maintenance suggestion
▶Annual inspection: infrared temperature measurement (focusing on monitoring the temperature rise of joints).
▶Seal inspection: replace the sealing ring once every five years (moisture and dust proof).
▶Insulation test: conduct a withstand voltage test every 3 years.
● Technical parameter of the 35KV European type Cable Junction Box
Rated Voltage
35KV
Rated current
630A
Dynamic stable current
50KA/0.3s
Heat stable current
20KA/0.3s
1min working frequency withstand voltage
42KV
15 mins DC Withstand voltage
52KV
Lighting impulse withstand voltage
105KV
Shell IP degree
IP33
● 35KV European type Cable Junction Box Order number description
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