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1楼 yushuli
等级:小学生
发帖数:19
回帖数:40
|  发帖时间 - 2005/1/13 9:28:17
| 1 Disconnecting switches
1.1 Design data
The ratings and performance shall be equal to or better than the following values:
Data 230 kV 66 kV
Service voltage kV 230 66
Highest system voltage kV 245 72.5
Type of disconnector HCB HCB
Power frequency 1 min. withstand voltage (wet/dry)to earth and (phase-to-phase) kVacross open contacts kV 395460 140160
Lightning impulse withstand voltage 1.2/50microsecto earth and (phase-to-phase) kV (peak)across open contacts kV (peak) 10501050 325350
Rated normal current A 2000 2500
Rated short time current, 3 sec kA 40 31.5
Rated peak short circuit current kA (peak) 100 80
Operating mechanism Motor
Rated supply voltage(auxiliary circuit) 3 ph ac, V 380+10%-15%
Rated supply voltage for control circuit V DC 220+10%-20%
Creepage distance to earth (IEC815 ) mm/kV 7595mm 2247mm
Operating mechanism for earthing switch motor Hand
Disconnecting switches, single three phase single Three
1.2 Technical requirements
Disconnecting switches shall be outdoor type, shall comply with IEC 129, IEC265,
IEC518 and IEC 1128 and be capable of carrying the full-load current of the circuit and
shall be arranged for operation while the equipment is alive. They will be required to
break the charging current of open busbars and connections to busbars.
The minimum total length of air gap between terminals of the same pole with the
disconnecting switch open, shall be designed to provide an impulse voltage withstand
level as per IEC 129 andIEC694 (latest edition).
Disconnecting switches shall be so designed that they shall not open by forces due to
currents passing through it, and shall be self-locking in both the "open" and "closed"
positions.
The disconnecting switches shall be provided with electrical operating mechanism and
shall be arranged for local and remote control and with manual operation.
Means shall be provided at the local control point to prevent the local and remote
control equipment from being in operation simultaneously.
The operating mechanism shall be located so that it can be maintained while the
disconnect is alive.
The mechanism shall normally open and close all three poles simultaneously.
The equipment shall operate safely and reliably and without undue maintenance or
operator attention under all operating and site conditions.
Service conditions require that disconnecting switches shall remain alive and in service
without being operated and without maintenance for period of up to 1 year. The
contacts shall therefore remain capable of carrying their rated load and short-circuit
currents without overheating for this period under the atmospheric and climatic
conditions existing at site. After such periods, the maximum torque required to open
them at the manual operating handle shall be within the capabilities of one man.
Life lubrication of the bearings of all disconnecting and earthing switches shall
guarantee maintenance free service life.
2 Current transformers
2.1 Design data
The ratings and performance shall be equal to or better than the following values:
Data 230 kV 66 kV
Service voltage kV 230 66
Highest system voltage kV 245 72.5
Power frequency 1 min withstand voltage kV 460 160
Lightning impulse withstand voltage 1.2/50 KV(peak) microsec 1050 350
Cores No 3 3
Rated primary current A 200/400/5/5/5 600/1200/5/5/5
Rated secondary current A 1 5
Accuracy class and burden Corel Cores 2 and 3 (protections) Core 4(main 2)+ Core 5(if any) 30 VA 0.5 Not less than 30 VA 5p40Class x for diff. Prot. 30VA 0.5 Not less than 30 VA 5p30
Rated continuous thermal current (over load) 120% the rated current
Rated short-time current (3 sec) KA 40 31.5
Creepage distance to earth (IEC815) mm/kV 7595mm 2247mm
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2楼 thundern
等级:初中生
发帖数:18
回帖数:129
| 发帖时间 - 2005/1/13 11:55:10
| 数量够大的
收费哦~
1断路开关
1.1设计资料
额定性能应该相当或超过下列标准：
基准230千伏66千伏
供给电压 千伏 230 66
***系统电压 千伏 245 72.5
断路器类型：HCB HCB
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3楼 thundern
等级:初中生
发帖数:18
回帖数:129
| 发帖时间 - 2005/1/13 12:04:48
| 电源频率 1 ***小接地耐电压值 (湿/干)与(相位之间的) 从千伏断开接点 千伏 395460 140160
接地承受雷电冲击电压 1.2 / 50微秒 (相位之间的)千伏 (***值) 宽 断开接点 千伏(***值) 10501050 325350
额定正常电流 2000 2500
额定短时电流 3秒 kA 40 31.5
额定***短路电流kA (***值) 100 80
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4楼 CHRISTULIP
等级:小学生
发帖数:1
回帖数:20
| 发帖时间 - 2005/1/13 14:30:32
| 你不会什么都不会吧，那么多都需要翻译么？
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5楼 thundern
等级:初中生
发帖数:18
回帖数:129
| 发帖时间 - 2005/1/13 14:33:47
| 执行机构马达
额定电源电压(辅助电路) 3 ph?交流电380+10% - 15% V
控制电路额定电源电压 伏 直流电 220+10% - 20%
接地漏电距离( iec815) 毫米/千伏 7595mm 2247mm
接地开关马达柄执行机构
断路开关,单三相 单三相
1.2技术要求
断路开关应该是露天式的,应该符合国际电工委员会129, IEC265标准。
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6楼 thundern
等级:初中生
发帖数:18
回帖数:129
| 发帖时间 - 2005/1/13 15:26:04
| 国际电工委员会518以及国际电工委员会1128标准，并且能够承受电路的满载电流和
应该针对操作进行调整，当设备是通电的时候，要求它们
断开开路导电条的充电电流以及导电条的电路.
在相同的带有断路开关开路的磁极末端之间***小总长,应该能够达到国际电工委员会129和694标准(***的版本）规定的冲击电压承受水平.
断路开关应该经过设计,以致它们不会被通过其中的电流力打开,并且应该在"开路"和"闭路"位置间自动锁定。
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7楼 thundern
等级:初中生
发帖数:18
回帖数:129
| 发帖时间 - 2005/1/13 16:01:06
| 断路开关应该装备有电动的执行机构，以及应该适合现场操作和遥控，并带有手工操作。
应该在局部控制点提供防止局部的和遥控设备同时操作的方法。
执行机构应该固定，以便当断开连接的时候可以维护。
机件通常应该同时启闭全部的三极。
装置应该安全可靠，并且按照全部的操作和场地条件下无过度的的维护保养或作业者。
操作条件要求断路开关应该通有电流并且在运行中。
1年期间不需操作，不用维修。触点应该保持能承受它们的额定负荷，并且在上述期限内，在现场大气和气候条件下承受短路电流不会过热。上述的期间之后,极限扭矩要求打开，
***情况下以手控手柄打开。
使用期限：全部的断开连接和接地开关的轴承的润滑应该具有免费维修服务期。
2 电流互感器
2.1设计资料
额定性能应该相当或超过下列标准：
基准 230千伏66千伏
供给电压千伏 230 66
***系统电压千伏 245 72.5
电源频率 1分 耐压 千伏 460 160
雷电冲击耐受电压 1.2 / 50 KV (***值) 微秒 1050 350
芯 号 ３３
额定初级电流 A 200 / 400 / 5 / 5 / 5 600 / 1200 / 5 / 5 / 5
额定次级电流 A 1 5
精度等级和负荷 芯 2 和3 (保护装置) Core 4 ( main 2) +芯 5 (如果有的话) 30伏安0.5至少30伏安、5p40class 电抗 对微分电路防护 30va 0.5至少30伏安5p30
额定连续热电流(过度负荷) 额定电流的120%
额定短时电流( 3秒）KA 40 31.5
接地漏电距离( iec815)毫米/千伏 7595mm 2247mm
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8楼 thundern
等级:初中生
发帖数:18
回帖数:129
| 发帖时间 - 2005/1/13 16:02:21
| 凑合用吧，好不容易翻译完了，不太好，请喝茶吧。
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