概述 Overview

本標準規定了GKD 系列礦用一般型低壓開關柜( 以下簡稱開關柜) 的型號和基本參數、技術要求、試驗方法、檢驗規則及標志、包裝、運輸、貯存。

本開關柜適用于非煤礦山等其它類似的礦井下中央控制室、井底停車場、主要通風道機電岷室的供電系統中，為1140(660、380)V系統中的動力、配電、照明、電機及其它電氣設備受電、饋電、控制和保護及電源變換設備，本開關柜同樣適用于地面變電站和冶金、化工、電力等部門的供電系統。

This standard specifies the models, basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation, and storage of GKD series general low-voltage switchgear for mining (hereinafter referred to as switchgear).

This switchgear is suitable for power supply systems in central control rooms, underground parking lots, and main ventilation ducts in mines other than coal mines. It is used for power, distribution, lighting, motor and other electrical equipment receiving, feeding, control and protection, and power conversion equipment in 1140 (660, 380) V systems. This switchgear is also suitable for power supply systems in ground substations and metallurgy, chemical, power and other departments.

產品型式及標志 Product type and logo

◆ 礦用一般型，標 志 ：KY

◆ 金屬非金屬礦山礦用產品安全標志標識：KA。

◆ General mining type, marked: KY

◆ Safety Mark Identification for Mining Products in Metal and Non Metal Mines: KA。

基本參數Basic parameters

開關柜的主要額定參數如下：

斷路器主要額定參數見表：

The main rated parameters of the circuit breaker are shown in the table:

技術要求 Technical requirement

4.1 環境條件

正常工作條件應在下列規定的范圍內：

a) 周圍空氣溫度上限為+40℃ , 下限為-20℃。

b) 海拔高度：不超過2000m。

c) 周圍空氣平均相對濕度不大于95%(25℃ )。

d) 在無破壞絕緣的氣體或蒸汽環境中。

e) 固定安裝使用。

4.2 工作條件

不符合

4.1 規定的工作條件為工作條件，按與用戶簽訂的協議制造。

4.3 設計和結構

4.3.1 殼體制造與偏差

殼體應按規定的圖樣制造。

外殼采用2.5mm 冷軋鋼板焊接而成，內部支撐結構采用2.0~3.0mm 冷軋鋼板制造。

4.3.2 外觀

4.321 開關柜的面板、箱體表面應整潔、美觀、牢固、不得有起泡、變形和流痕等現象。

4.3.2.2 開關柜的表面應標有" 嚴禁帶電開門" 的警告字樣。

4.3.2.3 開關柜內母線的標記顏色及相序應符合表2 的規定。

4.3.2.4 開關柜接地螺釘直徑不小于8mm, 接地螺釘應標有接地符號

4.1 Environmental conditions

Normal working conditions should be within the range specified below:

a) The upper limit of ambient air temperature is+40 ℃ , and the lower limit is -20 ℃ .

b) Altitude: not exceeding 2000m.

c) The average relative humidity of the surrounding air is not greater than 95% (25 ℃ ).

d) In a gas or steam environment that does not damage insulation.

e) Fixed installation and use.

4.2 Special working conditions

not in accordance with

The working conditions specified in 4.1 are special working conditions, manufactured according to the agreement signed with the user.

4.3 Design and Structure

4.3.1 Shell Manufacturing and Deviation

The shell should be manufactured according to the specified drawings.

The outer shell is welded with 2.5mm high-quality cold-rolled steel plate, and the internal support structure is made of 2.0-3.0mm high-quality cold-rolled steel plate.

4.3.2 Appearance

The surface of the panel and box of the 4.321 switchgear should be clean, beautiful, firm, and free of bubbles, deformations, and flow marks.

4.3.2.2 The surface of the switchgear should be marked with a warning message "Do not open the door with power on".

4.3.2.3 The marking color and phase sequence of the busbar inside the switchgear shall comply with the provisions of Table 2.

4.3.2.4 The diameter of the grounding screw for the switchgear shall not be less than 8mm, and the grounding screw shall be marked with a grounding symbol

4.3.3 通電操作

進行通電操作，檢查線路的正確性。

4.3.4 緊固件

緊固件材料應適用于外殼材料，且螺栓直徑應不小于M6.

4.3.5 電纜引入裝置

電纜引入裝置不應有尖銳棱角，以防損傷電纜。

設備外殼上不裝電纜或導管引入裝置的通孔應使用封堵件。

4.3.3 Power on operation

Perform power on operation and check the correctness of the circuit.

4.3.4 Fasteners

The fastener material should be suitable for the shell material, and the bolt diameter should not be less than M6

4.3.5 Cable entry device

The cable entry device should not have sharp edges to prevent damage to the cable.

The through holes on the equipment casing that do not have cable or conduit entry devices should be sealed with sealing components.