断路器规格一翻译-中英对照
表10
额定短时工频耐受电压（干、湿） 460kV
额定雷电冲击耐受电压 1050kV
无线电干扰水平 ≤500μV
瓷套管爬电比距 31mm/ kV*
注：*特殊订货不限
5 结构与工作原理
5.1 GIS系统
GIS系统一般包括进线间隔、出线间隔、测量和保护间隔等，它可根据用户的不同要求组成单母线、单母线分段、双母线及桥形接线等不同的接线方式。
典型间隔单元布置如图1所示。
图1典型间隔配置图
在本GIS系统中，除主母线为三相共筒结构外，其余元件均为分相式结构，利用这些标准元件可以组装成用户要求的各种间隔。主回路导体由固体绝缘件支承在外壳中央，利用梅花触头作为过渡连接。可以通过套管与架空线连接，也可以与电力电缆或变压器套管直接连接。
根据需要，GIS的气体系统可以划分为若干气室。如断路器室、母线室、进出线气室和电压互感器气室、避雷器气室等。
一般每个间隔设有一个就地控制柜，各气室的气体监视装置和各元件的控制回路等二次部分都集中配置在控制柜中。
5．2部件结构
5．2．1断路器
a）总体结构
断路器为分相罐式结构，如图2所示。每相用一台CTB-I 型弹簧操动机构，电气联动。
图2 三极断路器外形图
b）单极结构原理
如图3所示，静触头部分由两个环氧浇注的绝缘筒支承在罐顶部。动触头由绝缘筒支承在罐底部，且与绝缘拉杆和拐臂箱相连。灭弧室为有热膨胀室并带有辅助压气室的自能灭弧结构，灭弧过程以自能吹弧为主，压气灭弧为辅。
在合闸位置，主回路从上出线端子经静触头、动触头、气缸和中间触头到下出线端子。
分闸操作时，绝缘操作杆在分闸弹簧的作用下，使动弧触头、喷口、气缸、拉杆等一起快速向下运动。在运动中，静主触头和动主触头首先分离，接着静弧触头和动弧触头分离，产生电弧。在开断短路电流时，由于电流大，故弧触头间的电弧能量大，弧区热气流流入热膨胀室，在热膨胀室内进行热交换，形成低温高压气体；此时，由于热膨胀室压力大于压气室压力，故单向阀关闭。
图3 单相断路器
当电流过零时，热膨胀室的高压气体吹向断口间使电弧熄灭。在分闸过程中，压气室内的气体开始被压缩，但达到一定的压力时，底部弹性释压阀打开，一边压气，一边放气，使机构不必要克服更多的压气反力，从而大大地降低了操作功。开断小电流时（通常在几千安以下），由于电弧能量小，热膨胀室内产生的压力小。此时压气室的压力高于热膨胀室内的压力，单向阀打开，被压缩的气体向断口处吹去。在电流过零时，这具有一定压力的气体吹向断口使电弧熄灭。
合闸操作时，绝缘操作杆向上运动，推动动触头、气缸及其它可动部件亦向上运动，此时，SF6气体迅速进入气缸内，在合闸过程中，动静弧触头首先接通，然后主动静触头接通，完成合闸操作。
C) 弹簧机构的结构与原理
本断路器配用CTB-I型弹簧操动机构的结构。
弹簧操动机构安装在底座内，其外形及工作原理见图4
弹簧机构原理：
1) 储能操作 一个交直流两用的电机带动齿轮的旋转，通过90°¬¬¬¬¬¬¬¬¬¬¬¬换向传递给大、小棘爪，大、小棘爪推动棘轮旋转，一端固定的合闸弹簧被联动的拉杆压缩而储能；电机的停止由一个微动开关切断电源完成。电机具备过流保护以及15S内强制切断电源功能。
2) 合闸操作 合闸线圈接受指令使操作杆推动脱扣器脱开，合闸保持掣子被顶起释放棘轮，被保持的合闸弹簧释放能量驱动凸轮旋转，凸轮撞击滚轮使拐臂旋转完成合闸操作。合闸末端油缓冲器吸收多余能量。
另外，合闸操作的结果是与拐臂连接的分闸弹簧被压缩而储能。
3) 分闸操作 分闸线圈接受指令使操作杆推动脱扣器脱开，分闸保持滞子被顶起释放臂，拐臂在分闸弹簧的驱动下旋转完成分闸操作。在分闸末段缓冲器吸收多余的能量。
4) 重合闸操作 在合闸弹簧及分闸弹簧均储能状态时（也是GCB/GIS的工作状态），施加分－0.3S－合分指令便可以完成。
（图上文字，对照的方式：）
输出拐臂1
输出拐臂2
检修分闸部分的防动销
分闸线圈
合闸线圈
合闸弹簧
检修分闸部分的防动销
分闸弹簧及缓冲器
（图上文字，对照的方式：）
棘爪
凸轮
分闸弹簧
拐臂
合闸弹簧
分闸保持掣子
棘轮
灭弧室
合闸保持掣子
合闸脱扣器
合闸位置（合闸弹簧已储备能）
分闸线圈
分闸位置（合闸弹簧已储备能）
合闸位置（合闸弹簧已储备能）
图4 CTB-I型弹簧操动机构外形及原理图
Beijing Beikai Electric Co., Ltd.
Design document
Product Name: ZF19- 252 Type Gas Insulated Mental-claded Switchgear
File name: Operation Instruction of Installation
File code: 0BK.411.045
Beijing Beikai Electric Co., Ltd.
ISO9001 and ISO14001 Certified
August of 2005
1. Scope
The contents of this documentation specified the installation and operation instruction of ZF19- 252 type gas insulated mental-claded switchgear after manufacturing.
This document is applicable to the ZF19- 252 type gas insulated mental-claded switchgear (hereafter referred to as GIS) and its spring operating mechanism (hereafter referred to as the mechanism).
2. Normative Reference
The clauses of the following files are quoted and became the clauses of this file. All the dated reference and the subsequent modification (the list of correction is not included) and revision are not suitable for this file; all the dated reference and the subsequent modification and revision are not suitable for this file.
GB311.1-1997: Insulation Coordination of High Voltage Transmission and Transformation Equipment
GB1984-2003: HV Alternating - Current Circuit Breakers
GB1985-2004: Alternating Current High-Voltage Disconnectors and Grounding Switches
GB/T3222-1994: Measurement of Acoustics and Environmental Noise
GB3309-1989: Mechanical Test at Ambient Temperature for High-Voltage Switchgear GB4109-1999: Technical Specification of High Voltage Bushing
Grade of GB4208-1993: Outer Covering Protective Grade (IP code)
GB5582-1993: External Insulation Pollution Classes of High-voltage Electric Power Equipments
GB7354-2003: Partial Discharge Measurement
GB7674-1997: Gas-Insulated Mental-claded Switchgear for Rated Voltages of 72.5 Kv And Above
GB/T8905-1996: Guide for Processing and Measuring SF6 Gas in Power Apparatus
GB11022-1999：Common Specifications for High-Voltage Switchgear and Control Gear Standards
GB11023-1989：Test Guide of SF6 Gas Tightness for High-Voltage Switchgear
DL/T617-1997：Specification for Gas-insulated Mental-claded Switchgear
3 Summaries
This manual is applicable to the GIS of Model ZF19-252, which introduce the relevant contents of the installation, operation and maintenance of GIS, as well as the security norm that should pay attention to and possible danger during the course. Any operator shall read this manual carefully before the installation and operation of GIS. It is required to be familiar with the relevant content before operation. Please contact manufacturer in case of doubt or need more detailed materials,
3.1 The GIS of Model ZF19-252 is suitable for AC power system of 50Hz and 252kV. It is the controlling and protection equipment of the power system.
3.2 The GIS unit is complied with the regulation of GB7674 and IEC60517.
GIS takes the SF6 gas as insulating and arc-quenching medium, which adopts the principle of self energy arc-quenching and cooperates with the spring operating mechanism. This unit is characterized by strong breaking performance, low operating power and high dependability.
3.3 Operational environmental condition
3.3.1 The normal operational environmental condition shall comply with the regulation of GB11022.
a)Environmental temperature -25 degrees Centigrade- +40 degrees Centigrade
b) Daily temperature difference ≯15K
c) Daily relative humidity ≯ 95%, monthly relative humidity ≯ 90%
d) Altitude: Do not exceed 1000m
e)Tolerance earthquake intensity: 9 degrees
3.3.2 Unit exposes outdoor such as bushing
a) Environmental temperature -35 degrees Centigrade- +40 degrees Centigrade
b) Daily temperature difference ≯ 32K
c) Solar radiation intensity ≯1000W/ m2 (at fine noon)
d) Wind pressure ≯ 700Pa
e) Thickness of ice covering ≯ 10mm
f) Air pollution: Do not exceed the III grade of GB5582
g) The tolerance earthquake intensity is about 9 degrees;
3.3.3 The special environmental condition of operation may consult separately.
4 Specified technical parameters
4.1 Common technical parameters of GIS: (form 1)
Form 1
Rated voltage 252kV
Rated frequency 50Hz
Rated current 3150A
Rated short time endured current/ duration
40kA/4s , 50kA/3s
Rated peak endured current 100kA , 125kA
Rated short time work frequency endured voltage ( 1min)
Phrase to phrase and grounding 460kV
Between the fractures 395+145* kV
Rated lightning impulse endured voltage
Phrase to phrase and grounding 1050kV
Between the fractures 950+206* kV
SF6 gas pressure (20 degrees Centigrade) rated value / alarming value Circuit breaker compartment: 0.6/0.55MPa
Other compartments: 0.5/0.45± 0.02MPa
SF6 gas moisture content (volume ratio)
Control value Circuit breaker compartment: ≯150μL/L
Other compartments: ≯250μL/L
Annual gas leakage rate of SF6 ≤0.5%
Control circuit and voltage of auxiliary circuit DC 110V or 220V, AC220V or 380V
Note: * voltage value of reverse polarity
4.2 Parameters of the components
(1). Circuit breaker (form 2)
Form 2
Serial number Project Unit Parameter
1 Centre distance between the polarity of circuit breaker
mm 580
2 Moving contact travel 145±3
3 Contacting travel of moving contact( Measuring unit) 61±2
4 Connecting rod travel of operating mechanism 97±1
5 Opening velocity
m/s 5.8
6 Closing velocity
3.2
7 Opening time
ms 30
8 Closing time
70±10
9 Opening- closing time 300
10 Closing- opening time 60
(Continuing)
Serial number Project Unit Parameter
11 Synchronization of the three-pole opening brake ( Time difference ) ms ≯ 3
12 Synchronization of the three-pole closing brake ( Time difference ) ≯ 5
13 Resistance of main circuit μ Ω ≯80
14 Specified operation order O-0.3s-CO-180s-CO
15 SF6 gas locking pressure (20 Centigrade) MPa 0.5
16 Spring operating mechanism CTB-1 type
17 Rated voltage of control circuit V DC220
18 Rated voltage of opening (closing) coil V DC220
19 Rated voltage of opening coil A 2
20 Rated voltage of closing coil A 2
21 The motor spring mechanism Voltage: DC220V
Power: 450W
22 energy storage period in case of rated voltage of stored energy motor
s ≤15
(2) Isolating switch (form 3)
Form 3
Rated operating time Opening : ≤6s
Closing : ≤6s
Rated controlling voltage / power DC or AC220V/240- 360W
Rated operation moment ≤200N•m
Rated conversion current / voltage of bus bar 1600A/20V
Rated charging current of bus bar 0.1
(3) Earth switch (form 4)
Form 4
Specified operating time Opening : ≤6s
Closing : ≤6s
Rated controlling voltage / power DC or AC220V/240- 360W
Rated operation moment ≤200N•m
Fast-type rated closing current of shorts current 100/125 kA
Fast-type rated current of electromagnetic induction / voltage 160A/15kV
Rated charging current of bus bar 5A/6kV
(4) Current transformer (form 5)
Form 5
Rated primary current 300,400,600, 800, 1000,1200,1600,2000, 2500A
Rated secondary current 5A
Rated output capacity and accuracy grade See forms 6
Form 6
Current ratio Rated outputs capacity VA Accuracy grade of measurement Accuracy grade of protection
300/5 40 0.5 5P20
400/5 40 0.5 5P20
600/5 40,40 0.5 5P20
800/5 40,40 0.5 5P20
1000/5 40,40 0.5 5P20
1200/5 40,40 0.5 5P20
1600/5 50 0.5 5P20
2000/5 50 0.5 5P20
2500/5 50 0.5 5P20
(5). Voltage transformer (form 7)
Form 7
Rated primary current 252/ kV
Rated secondary current 100/ V
Rated voltage of residual winding 100V
Amount outputs the capacity and accurate grade Secondary measuring winding 100VA/0.5 grade or 75VA/0.2 grade
Secondary protecting winding 150VA/30 grade
Residual winding 150VA/30 grade
(6). Lightning protector (Form 8)
Form 8
Rated voltage 252kV
Continuous operating voltage 168.5kV
DC 1mA reference voltage ≥ 314kV
1/4μs slope impulse residual voltage ≤ 630kV
8/20μs thunder impulse residual voltage ≤ 562kV
30/60μs operating impulse residual voltage ≤ 478kV
Resistance ability of 2ms rectangular wave current 600A, 800A, 20 times
Resistance ability of 4/10μs impact current 100kA, 2 times
(7) Bus bar (Form 9)
Form 9
Rated current 3150A
Rated short time work frequency endured voltage
To the ground: 460kV
Phrase to phrase: 460kV
Rated lightning impulse endured voltage
To the ground: 1050 kV
Phrase to phrase: 1050 kV
(8) Bushing (Form 10)
Form 10
Rated short time work frequency endured voltage ( Dry and wet)
460kV
Rated lightning impulse endured voltage
1050kV
Radio interference level
≤ 500μV
Porcelain bushing creep distance
31mm/ kV*
2013.6.2