172JNN21032
•变压器配有由非腐蚀性金属制成的额定值和端子标记板。
铭牌包含有关额定值、电压比、重量、油量、矢量的信息
组等。铭牌还包括装置序列号。和制造年份。
4.2分接开关布置
（i） 断开电路开关
•变压器通常配有无回路分接开关，以获得所需电压
比率它可以通过安装在油箱盖或油箱侧的开关手柄手动操作。
锁定装置安装在手柄上，可锁定在任何轻敲位置。开关机构是这样的
只有当其位于正确位置时，才可以锁定，而不是在任何中间位置
位置
•变压器必须与所有带电线路隔离
操作开关。
•当变压器通电时，操作开关会因严重的
触点之间发生电弧，可能损坏变压器绕组。当开关手柄
提供在侧壁上的开关手柄总成必须在
正在取消链接。
（二）关断变比环节
•有时在变压器油箱内提供连接，以获得所需的电压比。链接
需要松开并固定在研发板中规定的新位置。链接是
可从检查盖接近。
（iii）有载分接开关
•有载分接开关是可选配件。有载分接开关配有本地
手动控制、本地电气控制和远程电气控制。自动电压
调节也可以作为可选配件提供。分接头位于高压位置
弯曲的
4.3接地端子
•铁芯叠片组件连接至铁芯夹紧装置，而铁芯夹紧装置又连接至
油箱。变压器箱上有两个接地端子。接地端子
应连接至接地。
4.4吊耳
•在油箱侧/顶盖上提供两个/四个容量足够的吊耳，以完全提升
组装好的充油变压器。所有吊耳设计为同时使用，必须使用
照着两个/四个吊耳均为重型配件，并配有单独的吊耳。

• The transformer is supplied with rating and terminal marking plate made out of noncorrosive metal. The plate contains information concerning the rating, voltage ratio, weights, oil quantity, vector group etc. The plate also includes unit Serial Number. and year of manufacturing. 4.2 TAP CHANGING ARRANGEMENT (i) Off-Circuit Switch • The transformer is normally fitted with an off-circuit tap changing switch to obtain required voltage ratio. It can be hand-operated by a switch handle mounted either on tank cover or on the tank side. The locking device is fitted to the handle to lock in any tap position. The switch mechanism is such that it can be locked only when it is located in its proper position and not in any intermediate position. • THE TRANSFORMERS MUST BE ISOLATED FROM ALL THE LIVE LINES, BEFORE OPERATING THE SWITCH. • Operating the switch when transformer is energised, will damage the switch contacts due to severe arcing between the contacts and may damage transformer winding. When the switch handle is provided on the side wall, it is necessary that Switch handle assembly is dismantled before untanking. (ii) Off-Circuit Ratio Changing links • Sometimes links are provided inside the transformers tank to obtain required voltage ratio. Links are required to be loosened and fixed in new required position as given in R & D Plate. Links are accessible from the inspection cover. (iii)On-Load Tap Changer • The on-load tap changer is an optional fitting. The on-load tap changers are provided with local manual control, local electrical control and remote electrical control. The automatic voltage regulation can also be provided as an optional fitting. The tappings are located on high voltage winding. 4.3 EARTHING TERMINALS • The core laminations assembly is connected to core clamping fame which is in turn connected to the tank. Two earthing terminals are provided on the transformer tank. The earthing terminals should be connected to the earthing. 4.4 LIFTING LUGS • Two/Four lifting lugs of adequate capacity are provided on tank sides/top cover to lift fully assembled transformer filled with oil. All lugs are designed for simultaneous use and must be used accordingly. Two/Four lifting lugs are all heavy fittings are also provided with individuals lifting lugs.