Year1
- 额定电压：
- 12KV
- 额定电流：
- 630A
- 额定频率：
- 50HZ
& It is suitable for outdoor three-phase AC power distribution systems with rated voltage and rated frequency, and is used for opening and closing load current and closing short-circuit current.
It is suitable for protection and control of substations, industrial and mining enterprises, urban and rural power grids, automatic distribution networks of urban and rural power grids, and places with frequent operations.
There are many types of operation control switches used in overhead line power distribution systems. The column-mounted vacuum load switch has outstanding advantages such as oil-free, simple mechanism, reliable performance and no maintenance, and has been widely used so far. &This product is combined with equipment such as R-type fault detector or R remote control terminal device to form a distribution automation system with a very simple structure. It can realize automatic location of overhead line faults and automatic isolation of fault sections. &In order to update my country's existing distribution switchgear and enable it to achieve oil-free and automated distribution equipment transformation needs. Zhejiang Shenheng Electric Power Equipment Co., Ltd. introduced a complete set of production technology for column-mounted vacuum load switches suitable for overhead power lines from Toshiba Corporation of Japan and put it into mass production.
Product structure and features:
&. Excellent breaking performance: After introducing Toshiba technology, catching up with Japanese technology, and carrying out expansion design, the closing short-circuit current is expanded to use vacuum arc extinguishing and gas insulation. The switch has an isolation fracture connected in series with the vacuum arc extinguishing chamber, which has excellent arc extinguishing performance and pressure resistance. The mechanism ensures the sequence of actions between the two (vacuum interrupter opens first and then closes, isolation knife closes first and then opens). & Suitable for breaking load current. In addition to the vacuum break, there is also an isolation break in series. The voltage resistance performance is particularly excellent.
.High safety: Both arc extinguishing and insulating media are oil-free media, and an explosion-proof device is installed on the top of the box. Even if an unexpected internal failure occurs, no high-temperature gas or splash will leak out.
. Maintenance-free: The main circuit and operating mechanism of the switch are sealed in a box with gas as medium. The main circuit of the switch is led out by a cable head or our company's patented corner casing.
.Due to the use of zero gauge pressure gas insulation, the switch is compact in size and avoids the risk of air leakage as much as possible. With manual/automatic operation, the switch operation is flexible. Equipped with electromagnetic operating mechanism and electric maintenance. It closes when there is electricity and opens when it loses electricity. The structure is simple and reliable.
.Flexible installation method: it can be installed on a pole or seated.
.Has automatic power distribution interface: it can be equipped with current transformers of various variable ratios for measurement, protection and metering, and equipped with remote auxiliary contacts.
.High reliability: It is the crystallization of Japan's Toshiba vacuum equipment technology and practice for more than 30 years, and is guaranteed by our company's perfect quality management system, so that the products produced are highly reliable and the gas inflation pressure is zero. Gauge pressure, less likely to cause leakage, and reliable sealing technology ensure that the gas in the switch can operate normally for years. It achieves no oil, no fire, no explosion risk, and is very safe to operate.
. No inspection or maintenance required: the live parts and operating mechanism are inside the sealed container and are not affected by the external environment. The arc is enclosed in a sealed vacuum arc extinguishing chamber, and there are no sources of pollution inside the switch. Therefore, the switch does not require maintenance and repair during operation.
Use environmental conditions
:
Ambient air temperature: ℃~+℃ Daily temperature difference: daily temperature change is not greater than ℃ According to the nature of the gas material, when the ambient temperature is ℃, such as inside the box The air pressure is ., and it is still in gaseous state at this time, ensuring the normal operation of the product. (When the ambient temperature is ℃ and the gauge pressure is ., the liquefaction point is ℃ and zero gauge pressure, and the liquefaction point will not exceed ℃).
, the wind speed is not greater than /
, and there is no place with flammable, explosive hazards, strong chemical corrosives (such as various acids, alkalis or thick smoke, etc.) and severe vibration.
, Altitude: ≯
, Coverage thickness:
, Air pollution level: level
, Earthquake intensity: ≯ level
, Grid neutral point grounding method: Neutral The point is not grounded, the neutral point is grounded through the arc suppression coil, and the neutral point is grounded through low resistance.
Ordering plan:
&Provide wiring scheme diagram number, purpose and single-line system diagram, rated voltage, rated current, etc.
&Switch cabinet control, measurement and protection functions and other locking and automatic devices Requirements
&When the switch cabinet is used in special environmental conditions, details should be specified when ordering
&If other or additional accessories and spare parts are needed, the type and quantity should be stated
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