概述 Overview

本標準規(guī)定了 GKG- □ /10( 6 ) 礦用一般型高壓開關柜的型號規(guī)格、要求、試驗方法、檢驗規(guī)則、標志、包裝、運輸與貯存。

本標準適用于非煤礦山等其他類似的地下工業(yè)生產(chǎn)部門使用的GKG- □ /10( 6 ) 礦用一般型高壓開關柜。( 以下簡稱開關柜) 的制造與檢驗。

This standard specifies the model specifications, requirements, test methods, inspection rules, marking, packaging, transportation, and storage of GKG - □ /10 (6) general high-voltage switchgear for mining.

This standard is applicable to GKG - □ /10 (6) mining general high-voltage switchgear used in non coal mining and other similar underground industrial production departments. Manufacturing and inspection of switchgear.

基本參數(shù) Basic parameters

◆ 額定電壓：10(6)kV ;

◆ 額定電流：1250( 1100、1000、880、800、630、550、500、400、300、250)

◆ Rated voltage: 10 (6) kV;

◆ Rated current: 1250 (1100, 1000, 880, 800, 630, 550, 500, 400, 300, 250)

斷路器基本參數(shù) Basic parameters of circuit breaker

額定短路開斷電流：31.5kA( 有效值)

額定短路關合電流：80kA( 峰值)

額定短時耐受電流：31.5kA( 有效值)

額定峰值耐受電流：80kA( 峰值)

額定短路持續(xù)時間：4s

3.5 開關柜主要保護功能：

a) 短路保護 b) 過負荷保護 c) 另具備故障記憶、故障查詢、自檢等功能。

Rated short-circuit breaking current: 31.5kA (effective value)

Rated short-circuit closing current: 80kA (peak)

Rated short-time withstand current: 31.5kA (effective value)

Rated peak withstand current: 80kA (peak)

Rated short-circuit duration: 4s

3.5 Main protection functions of switchgear:

a) Short circuit protection b) Overload protection c) It also has functions such as fault memory, fault query, and self check.

技術要求 Technical requirement

4.1 一般要求

4.1.1 開關柜應符合本標準的要求，并按國家指定的檢驗單位批準的圖樣及技術文件制造。

4.1.2 除符合本技術條件外還應符合GB/T12173-2008 標準的規(guī)定。

4.2 環(huán)境條件

開關柜在下列條件下應能正常工作：

a) 海拔高度：1000m ;

b) 環(huán)境溫度：-20℃ ~40℃；

c) 相對濕度:95% ;

d) 在無破壞絕緣的氣體或蒸汽環(huán)境中；

4.3 外殼

4.3.1 材料

開關柜外殼采用2.5mm 厚冷軋鋼板制成。

4.3.2 強度

開關柜外殼材質符合GB3836.1-2010 第8 章的規(guī)定，并均應承受lkg/7J 的沖擊強度沖 擊試驗。

4.3.3 防護等級

開關柜外殼的防護能力應符合GB3836.3-2010 第4.9 條的規(guī)定，防護能力應不低于IP54。

4.3.4 表面溫度

開關柜的表面溫度按GB/T12173-2008 中相關的規(guī)定，不超過85℃ ; 操作手柄、手輪應不高于60℃。

4.1 General Requirements

4.1.1 The switchgear shall comply with the requirements of this standard and be manufactured according to the drawings and

technical documents approved by the designated inspection unit of the country.

4.1.2 In addition to meeting the technical requirements, it should also comply with the provisions of GB/T12173-2008 standard.

4.2 Environmental conditions

The switchgear should be able to operate normally under the following conditions:

a) Altitude: 1000m;

b) Environmental temperature:- 20℃ ~40℃；

c) Relative humidity: 95%;

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

4.3 Shell

4.3.1 Materials

The outer shell of the switchgear is made of 2.5mm thick cold-rolled steel plate.

4.3.2 Strength

The material of the switchgear shell shall comply with the provisions of Chapter 8 of GB3836.1-2010 and shall withstand an impact strength impact test of 1kg/7J.

4.3.3 Protection level

The protective capability of the switchgear shell should comply with the provisions of Article 4.9 of GB3836.3-2010, and the protective capability should not be lower than IP54.

4.3.4 Surface temperature

The surface temperature of the switchgear shall not exceed 85 ℃ in accordance with the relevant provisions of GB/T12173-2008;

The operating handle and handwheel should not exceed 60 ℃ .

4.6.2 爬電距離符合GB3836.3-2010 第4.4 條的規(guī)定距離見表2

開關柜污染等級3 級、材料組別I、額定工作電壓確定；

4.6.2 Creepage distance complies with the provisions of Article 4.4 of GB3836.3-2010. The distance is shown in Table 2 

Determination of pollution level 3, material group I, and rated working voltage for switchgear;

4.7 接地連接件

開關柜應設置GB3836.1-2000 第15 章規(guī)定的符合內(nèi)、外接地裝置，并標注( 配置) 接地標 志 。

4.8 聯(lián)鎖

4.8.1 開關柜開關把手在切斷電源后應能自鎖，以防止誤操作

4.8.2 開關柜應設置" 嚴禁帶電開蓋" 的警告牌

4.8.3 、斷路器和接地開關分、合應順暢、無卡阻；斷路器處于合閘位置時，手車不能拉出；斷路器和接地開關不得同時合閘。

4.9 溫升

4.9.1 礦用低壓開關設備內(nèi)導體相互連接處允許溫升不應超過表3 的規(guī)定。

4.7 Grounding connectors

The switchgear should be equipped with internal and external grounding devices that comply with the provisions of Chapter 15 of GB3836.1-2000, and marked with (equipped with) grounding signs.

4.8 Interlocking

4.8.1 All switch handles of the switchgear should be self-locking after cutting off the power supply to prevent accidental operation

4.8.2 The switchgear should be equipped with a warning sign that reads' No opening with live power '

4.8.3. The opening and closing of circuit breakers and grounding switches should be smooth and unobstructed; When the circuit breaker is in the closed position, the handcart cannot be pulled out; Circuit breakers and grounding switches shall not be closed simultaneously.

4.9 Temperature rise

4.9.1 The allowable temperature rise at the interconnection of conductors in mining low-voltage switchgear should not exceed the provisions in Table 3.

4.10 過流保護試驗

4.10.1 過負荷保護應符合表4 的規(guī)定，并具備告警功能

4.10 Overcurrent protection test

4.10.1 Overload protection shall comply with the provisions of Table 4 and have alarm function

4.10.2 當電流超過短路保護設定電流(4Ie~10Ie ) 時 ，斷路器立即分閘保護，動作時 間不大于100ms。

4.11 自檢及故障查詢功能, 開關柜應能通過自檢回路進行自檢，并具備故障查詢功能。

4.12 主回路電阻測試, 主回路的接觸電阻應不大于400μΩ。, 溫升前后差值應小于10%。

4.13 絕緣水平如表5 所示

4.14 濕熱性能應符合GB3836.1-2010 中附錄C 規(guī)定的要求，嚴酷等級高溫40℃ , 濕熱試驗周期2Id。

4.15 開斷關合能力試驗, 短路分斷能力應符合GB1984 第6.104 條的規(guī)定，并滿足標準上述3.4 條要求。

4.10.2 When the current exceeds the short-circuit protection set current (4Ie~10Ie), the circuit breaker immediately opens for protection, with an action time not exceeding 100ms.

4.11 Self check and fault query function: The switchgear should be able to perform self check through the self check circuit and have fault query function.

4.12 Main circuit resistance test: The contact resistance of the main circuit should not exceed 400 μ Ω., The difference before and after temperature rise should be less than 10%.

4.13 Insulation level as shown in Table 5

4.14 The wet heat performance shall comply with the requirements specified in Appendix C of GB3836.1-2010, with a severity level of high temperature of 40 ℃ and a wet heat test cycle of 2Id.

4.15 Breaking and closing ability test, the short-circuit breaking ability should comply with the provisions of Article 6.104 of GB1984 and meet the requirements of Article 3.4 of the standard mentioned above.

注 ：1、 控制回路2kV。

2、開關主電路及控制電路必須能承受交流50Hz 的工頻試驗電壓，歷時lmin 無擊穿或閃絡現(xiàn)象。

Note: 1. Control circuit 2kV.

2. The main circuit and control circuit of the switch must be able to withstand the AC 50Hz power frequency test voltage without breakdown or flashover for 1 minute.

表Table 5

4.16 短時耐受電流和峰值耐受電流試驗

額定短時耐受電流應符合GB/T 11022 第6.6 條的規(guī)定，并滿足標準上述3.4 條要求。

4.16 Short time withstand current and peak withstand current test

The rated short-time withstand current shall comply with the provisions of Article 6.6 of GB/T 11022 and meet the requirements of Article 3.4 of the standard mentioned above.

注 ："O " 表示需要進行檢驗的項目， "- " 表示不檢驗的項目，"*" 表示出廠只進行工頻耐壓。

Note: "O" indicates the items that need to be inspected, "-" indicates the items that do not need to be inspected, and "*" indicates that only the power frequency withstand voltage is tested at the factory.