BHA-10/630 BHA-10/400 Переключатели нагрузки

переключатели нагрузки vna 10/630 vna 10/400

Категории Высоковольтный разъединитель, заземляющий выключатель, выключатель разрыва нагрузки, Россия Тип продукции

VNA-10/630 and VNA-10/400 are indoor medium voltage load break switches designed for 6kV–10kV power distribution systems.

Featuring reliable auto-gas arc extinguishing performance, compact structure, and optional grounding blades, they are ideal for substations, switchgear panels, and transformer protection applications.

Детали

Подробнее о продукте:

The VNA-10 series indoor load break switches are medium voltage switching devices designed for operational switching of three-phase AC power systems under load conditions.

Available in 400A and 630A rated current versions, the VNA-10 load switches are widely used in indoor switchgear, transformer substations, KSO cabinets, and ring main distribution systems for 6kV–10kV networks.

The switches utilize an auto-gas arc extinguishing chamber to ensure reliable load interruption and operational safety.

Характеристики товара

Rated voltage: 10kV
Rated current: 400A / 630A
Indoor air insulated structure
Auto-gas arc extinguishing technology
Reliable load switching performance
Optional grounding blades
Manual or motorized operation available
Compact design for switchgear integration
Visible isolation gap
High mechanical durability
Polymer or porcelain insulator options

Технические характеристики

Артикул	VNA-10/400	VNA-10/630
Номинальное напряжение	10kV	10kV
Maximum Operating Voltage	12 кВ	12 кВ
Номинальный ток	400A	630A
Rated Breaking Current	400A	630A
Thermal Withstand Current	20kA / 1s	20kA / 1s
Peak Withstand Current	51kA	51kA
Frequency	50Hz / 60Hz	50Hz / 60Hz
Mechanical Life	2000 Operations	2000 Operations
Installation	Indoor	Indoor
Arc Extinguishing Method	Auto-Gas	Auto-Gas

Working Principle

The VNA load switch uses a self-generated gas arc extinguishing chamber. During switching operations, the electric arc formed between contacts heats the chamber material, generating gas that rapidly cools and extinguishes the arc. This ensures safe interruption of load currents and minimizes contact wear.

Приложения

The VNA-10 load switches are commonly used in:

Indoor switchgear panels
Ring main units (RMU)
Compact transformer substations (KTP)
KSO and KRU cabinets
Industrial power distribution systems
Utility substations
Mining and infrastructure projects

Product Advantages

Reliable Arc Quenching

Auto-gas arc extinguishing technology provides stable and efficient load interruption.

Compact Structure

Ideal for installation inside medium voltage switchgear cabinets and compact substations.

Safe Operation

Mechanical interlocking prevents incorrect grounding and switching operations.

Long Service Life

Designed for high operational reliability with low maintenance requirements.

Optional Configurations

Left-side or right-side operating mechanism
Grounding blades on one or both sides
Fuse combination type
Polymer insulator version
Porcelain insulator version
Motorized operating mechanism