浙江浙一电气有限公司

概述 Overview

本标准规定了 GKG- □ /10( 6 ) 矿用一般型高压开关柜的型号规格、要求、试验方法、检验规则、标志、包装、运输与贮存。

本标准适用于非煤矿山等其他类似的地下工业生产部门使用的GKG- □ /10( 6 ) 矿用一般型高压开关柜。( 以下简称开关柜) 的制造与检验。

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.

基本参数 Basic parameters

◆ 额定电压：10(6)kV ;

◆ 额定电流：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)

断路器基本参数 Basic parameters of circuit breaker

额定短路开断电流：31.5kA( 有效值)

额定短路关合电流：80kA( 峰值)

额定短时耐受电流：31.5kA( 有效值)

额定峰值耐受电流：80kA( 峰值)

额定短路持续时间：4s

3.5 开关柜主要保护功能：

a) 短路保护 b) 过负荷保护 c) 另具备故障记忆、故障查询、自检等功能。

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.

技术要求 Technical requirement

4.1 一般要求

4.1.1 开关柜应符合本标准的要求，并按国家指定的检验单位批准的图样及技术文件制造。

4.1.2 除符合本技术条件外还应符合GB/T12173-2008 标准的规定。

4.2 环境条件

开关柜在下列条件下应能正常工作：

a) 海拔高度：1000m ;

b) 环境温度：-20℃ ~40℃；

c) 相对湿度:95% ;

d) 在无破坏绝缘的气体或蒸汽环境中；

4.3 外壳

4.3.1 材料

开关柜外壳采用2.5mm 厚冷轧钢板制成。

4.3.2 强度

开关柜外壳材质符合GB3836.1-2010 第8 章的规定，并均应承受lkg/7J 的冲击强度冲 击试验。

4.3.3 防护等级

开关柜外壳的防护能力应符合GB3836.3-2010 第4.9 条的规定，防护能力应不低于IP54。

4.3.4 表面温度

开关柜的表面温度按GB/T12173-2008 中相关的规定，不超过85℃ ; 操作手柄、手轮应不高于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 爬电距离符合GB3836.3-2010 第4.4 条的规定距离见表2

开关柜污染等级3 级、材料组别I、额定工作电压确定；

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 接地连接件

开关柜应设置GB3836.1-2000 第15 章规定的符合内、外接地装置，并标注( 配置) 接地标 志 。

4.8 联锁

4.8.1 开关柜开关把手在切断电源后应能自锁，以防止误操作

4.8.2 开关柜应设置" 严禁带电开盖" 的警告牌

4.8.3 、断路器和接地开关分、合应顺畅、无卡阻；断路器处于合闸位置时，手车不能拉出；断路器和接地开关不得同时合闸。

4.9 温升

4.9.1 矿用低压开关设备内导体相互连接处允许温升不应超过表3 的规定。

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 过流保护试验

4.10.1 过负荷保护应符合表4 的规定，并具备告警功能

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 当电流超过短路保护设定电流(4Ie~10Ie ) 时 ，断路器立即分闸保护，动作时 间不大于100ms。

4.11 自检及故障查询功能, 开关柜应能通过自检回路进行自检，并具备故障查询功能。

4.12 主回路电阻测试, 主回路的接触电阻应不大于400μΩ。, 温升前后差值应小于10%。

4.13 绝缘水平如表5 所示

4.14 湿热性能应符合GB3836.1-2010 中附录C 规定的要求，严酷等级高温40℃ , 湿热试验周期2Id。

4.15 开断关合能力试验, 短路分断能力应符合GB1984 第6.104 条的规定，并满足标准上述3.4 条要求。

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、开关主电路及控制电路必须能承受交流50Hz 的工频试验电压，历时lmin 无击穿或闪络现象。

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 短时耐受电流和峰值耐受电流试验

额定短时耐受电流应符合GB/T 11022 第6.6 条的规定，并满足标准上述3.4 条要求。

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 " 表示需要进行检验的项目， "- " 表示不检验的项目，"*" 表示出厂只进行工频耐压。

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.