范文一:说明书变压器
BWDK 干式变压器温度控制器
国内知名度最高的温控器报价网有干变温控仪出售, 包括干式变压器温控器、干式变压器温度、干式变压器智能温度控制器、干式变压器用温度控制器、温控仪、智能温控仪、富士温控仪、多路温控仪、变压器温度控制器BWY 等产品。干式变压器温度控制器是专为干式变压器安全运行而研制生产的智能型仪表。
BWDK 干式变压器温度控制器 功能介绍
干式变压器温度控制器采用高性能PT100传感器,是保证干式变压器安全运行的控制装置。该仪表设计新式,结构紧凑、牢固、显示醒目、直观,具有更加完善的系统保护、参数保存与输出指示等功能。本产品具有精度高、体积小、寿命长、安装方便,易使用等特点。
1、对三相绕组温度的巡回显示或最高温度相绕组的跟踪显示(可随意切换)。任何一路超过预设点即起控风机。 2、实现冷却风机启停的自动控制或手动控制(可随意切换)。
3、风机启停、超温报警、超温跳闸信号的显示、输出及远传。
BWDK 干式变压器温度控制器 适用范围
本品广泛应用于电力部门使用的各种高低压开关柜、干式变压器、箱式变电站及其他相关的温度使用领域。
BWDK 干式变压器温度控制器 工作原理
该产品通过温度传感器对环境温度自动进行采样、即时监控,当环境温度高于控制设定值时控制电路启动,可以设置控制回差。当被控制的温度不能得到有效的控制时,为了防止设备的毁坏还可以通过跳闸的功能来停止设备继续运行。
BWDK 干式变压器温度控制器 主要技术指标
1.测量范围:0~200℃
2.使用条件: 工作温度:-10℃~+55℃
相对湿度:≤95% (25℃)
工作电源:AC220V ±10%,AC380V ±10%;50Hz 3.分 辨 率:0.1℃
4.测温精度:0.5级,控制误差:≤±1℃
5.显示方式:1位相位显示,3位半温度值显示
6.继电器触点输出:单相风机10A *250V .三相风机10A *380V .其他信号3 A*220V
7.传感器:Pt100铂电阻 (Φ3×25mm )
8、最大功耗:塑壳为≤5W; 铁壳为≤8 W
9.产品重量:塑壳为≤1kg; 铁壳为≤5kg
10.外形尺寸:
塑壳为:宽×高×长=160mm×80mm ×145mm
铁壳为:宽×高×长=200mm×250mm ×100mm
11.塑壳开孔尺寸:宽×高=153mm×77mm
12.模拟电流输出:4~20Ma(线性对应0~200.0℃)
BWDK 干式变压器温度控制器 干式变压器温度控制仪需注意事项:
1如果已经开孔,请注意安装尺寸,以免开孔过大或过小无法安装。
2本温控仪有两部分:主体和传感器。如果是更换旧产品需注意传感器是否配套的问题。一般来说,厂家不同,传感器的接口和协议也不同,无法交叉配套使用。
范文二:变压器说明书
GGAj02—□A/□kV
高压静电除尘用整流变压器
使用说明书
福建龙净环保股份有限公司
GGAj02-□A/□kV 高压静电除尘用整流变压器使用说明书
目录
一 安全信息
1 重要安全标识
有电危险。
注意安全。
2 安全注意事项
设备运行时带有高压电。为了你的安全,请遵守如下规定:
2.1 安装、调试、参数设置、维护和操作均要由专业人员进行;
2.2 整流变压器有高压,运行时请勿接触,否则将导致触电;
2.3 设备运行时不要拆卸或触摸任何部件,否则将导致触电;
注意! 为了避免被电击,请严格遵守本说明书的规定。只有专业技术人员才能打开、操作或维修本设备。
我公司将不对由于错误安装和使用本设备而造成的人身伤害负责。
二 接收、搬运和储存
1 接收
检查包装箱的外部,查看是否有损坏。
注意:任何外部损坏预示着设备可能受损。
2 搬运
用叉车或起重机移动包装箱。用叉车时将叉子放在包装箱的底部;当用起重机时,起吊用的绳子至少要足够承重,并且绳子要尽可能地放在包装箱的底部。包装箱尽可能放在平坦的地面上。搬运时,保留包装箱将有利于保护设备免遭损坏。任何时候都要保证设备是垂直的。
图1 整流变压器保装箱起吊示意图
3 开箱
首先打开包装箱上盖板,然后打开四周的包装物,整流变压器的底部已用螺杆固定在木板上,需先取去固定整流变压器底座的螺杆,整流变压器方可从底座上提起。整流变压器箱体上有四个吊攀,采用直径为20~25mm 的钢丝绳,均匀钩在吊攀上进行起吊;若采用吊钩起吊,则吊钩直径应≤30mm ,注意不要碰坏散热片,如图2。
注意!整流变压器箱盖上的四个吊环是用于整流变压器检修吊芯的,不能用箱盖上的吊环起吊整流变压器。
图2 整流变压器起吊示意图
4 储存
如果设备到达后没有立即安装,请不要拆箱并按下述过程保存:
4.1 存放在干净干燥的地方。
4.2 存放的环境温度保持在-40~40℃。
三 产品概述
本设备的基本作用是将工频交流电源变换成高压直流电源输出,在选用适当的电极等机械装置后,配套组成高压静电除尘设备,适用于除尘、除雾、脱水、杂质分离和回收稀有金属及其它原料等各方面。
主要工作原理
交流电源由反并联晶闸管交流调压后,送至整流变压器初级,再经升压、整流输出直流负高压。
四 安装
1 安装前的检查
1.1整流变压器的检查
1.1.1 检查整流变压器四周有无渗漏油现象,检查高、低压瓷瓶有无破损,检查各部件及紧固件有无松动现象。
1.1.2 检查低压绕组对地绝缘,用1000V 的摇表测量,其阻值应大于300M Ω。
1.1.3 检查高压输出端对地绝缘,用2500V 的摇表测量,其阻值应大于1000M Ω。
1.1.4 检查高压测与高压输出端阻值,用2500V 的摇表测量,额定直流输出电压50kV ~80 kV 的设备,阻值为78M Ω;额定直流输出电压90 kV~110 kV的设备,阻值为120 MΩ。
1.2 整流变压器的吊芯检查
全密封整流变压器一般不必吊芯检查。当有故障需吊芯检查时,按如下步骤操作:
1.2.1 吊芯检查注意事项
1.2.1.1 吊芯检查应在户内或临时封闭的地方进行,地面应平坦结实,四周清洁,设备和工具应干净。
1.2.1.2 环境温度应高于-15℃。器身暴露时间:空气相对湿度≤65% 时,不超过8小时;空气相对湿度≤75% 时,不超过6小时;空气相对湿度>75% 时,不允许吊芯。器身暴露时间从放油开始计算。
1.2.1.3 吊芯前先将整流变压器的外观处理干净,以免灰尘、杂质等进入整流变压器内部。
1.2.1.4 旋开整流变压器箱体下部的放油阀,将变压器油放出50kg 左右,变压器油必须用干净的油桶盛装,盖密,避免受污染。
1.2.1.5 松开箱盖中的螺栓及压力释放阀中的导油管,用起吊设备将箱盖吊起,移至安全位置。
1.2.1.6 打开箱盖中的手孔盖,将手伸入油箱内部,用扳手松开“-”高压引线,然后将箱沿螺栓拆下,用起吊设备的吊钩钩住箱盖上的吊环,平稳地将箱盖吊起,移至安全位置。注意器身不要与箱体或高压套管碰撞,以免损坏。
1.2.1.7 检查整流变压器内部的所有引线有无松动,位置是否发生偏移,以及有无和其他零部件相碰撞,各紧固件有无松动现象等等,发现问题及时处理。
1.2.1.8 检查高压测量电阻有无损坏,引线片接触是否良好,位置是否移动。
1.2.1.9 检查铁芯接地是否可靠,而且只有一点接地。检查方法:将接地螺栓松开,用1000V 的摇表测量铁芯与夹件的绝缘电阻,其阻值要大于300M Ω,测量后将接地螺栓锁紧。
1.2.1.10 检查高、低压瓷瓶有无损坏。
1.2.1.11 检查硅堆极性是否正确。用2500V 摇表测量硅堆,其反向阻值须大于1000 MΩ,正向阻值必须接近为0。
1.2.1.12 吊芯检查完毕,把器身缓慢地放回箱体内,注意避免器身与箱体碰撞。按对称方式均匀锁紧箱盖上各箱沿螺栓;接好“-”高压引线,锁紧手孔盖。从注油口处加入合格的变压器油,直至油面到规定的刻度处。
1.3 关于变压器油,由于整流变压器与电力变压器结构不同,造成许多差异,具有特殊性。
1.3.1 整流变压器在进行高低压绕组之间测试、高压绕组对地绝缘测试、低压绕组对地绝缘测试、高压绕组直流电阻试验、低压绕组直流电阻试验、高压硅堆绝缘试验、取样电阻试验后,本设备变压器油确保符合GB/T7595-2000《运行中变压器油质量标准》中投入运行前油的各项指标。
1.3.2 为了确保整流变压器在现场运行质量,我公司整流变压器在出厂前又增加了运行考核,即在厂内以模拟电场为负载,进行额定电压、额定电流的满负载运行、油温升曲线测试、闪络冲击和短路冲击等项目的试验,整个过程运行时间4小时以上,因而变压器油会产生一些气体。根据我公司多年的经验,氢气、乙炔、总烃的含量就不能按投入运行前油的指标考核,而是介于运行前油和运行油之间。
1.3.3 整流变压器在现场运行168小时后,变压器油质量指标按运行油考核,在此之后,变压器油的气体含量进入稳定状态,基本不会发生大的变化。
1.3.4 我公司生产整流变压器有三十多年历史,积累了丰富的经验,整流变压器的生产工艺保持国内领先水平,对变压器油的各个过程制定了严格的企业标准。
变压器油的质量指标见表1。
表1 变压器油质量指标
2 机械安装
2.1 在选择设备的安装位置时,要考虑到设备周围的余留空间。当整流变压器安装于户内时,距离墙壁应保持1m 以上。
2.2 整流变压器可安装在钢轨上或槽钢上。
2.3 当整流变压器装有气体继电器时,需打开气体继电器内的气塞,排除气体。使气体继电器内充满变压器油,当气塞有油排出时关紧气塞。
2.4 温度计管中必须先装15~20mL 的变压器油,再装入温度计。
3 电气安装
3.1 接线时,控制电缆和动力电缆不要放在同一个电缆管、同一电缆沟或同一电缆桥架中。如果在同一电缆沟或同一电缆桥架中,控制电缆与动力电缆至少要分隔布置。
3.2 根据电缆清册接线。如果是多根电缆,应按图3所示接线,以减少涡流。
图3 多根电缆接线图
3.3 当整流变压器安装于户内时,整流变压器输出端到负载的连接线应采用高压绝缘电缆。
3.4 设备应按要求接地。
3.5 整流变压器的接地端与负载阳极的接地母线,应采用6mm 2以上多股铜芯导线。
3.6 设备出厂时同一套控制柜与整流变压器有相同的出厂序号,最好匹配使用。
3.7 整流变压器的接地端以及负载外壳接地端都必须可靠接地,其接地电阻不得大于2.0Ω。为了防止干扰,整流变压器上二次电流、电压取样电阻的接地端均应可靠相连后接到整流变压器接地端。
3.8 整流变压器温度计接线见图4:温度计共有4根线,其中公共端为线Ⅰ(紫色或黑色线),与控制柜端子排X102的端子10(N )相连;“临界油温”信号为线Ⅱ(红色或绿色线),与控制柜端子排X102的端子11(229)相连;“危险油温”信号为线Ⅲ(灰色或黄色线)与控制柜端子排X102的端子12(230)相连。
图4 整流变压器温度计接线图
3.9 气体继电器、油位计、压力释放阀的接线已经与温度计的接线连接好,不必另外接线。
五 设备的维护保养
注意!维护保养工作必须在安全条件下进行。
1 根据环境条件定期对整流变压器进行清扫,尤其是保持整流变压器高、低压套管的清洁。
2 每年要进行一次变压器油耐压试验和油中溶解气体色谱分析,油的击穿电压不低于35kV/2.5mm,否则要重新滤油或更换新油,新油的耐压应大于40kV/2.5mm。油中气体含量的注意值参照表1的规定。
3 电除尘器大修后,整流变压器的试验项目和要求:
4.1 高压输出对地的绝缘电阻,采用2500V 兆欧表,绝缘电阻>1000M Ω;
4.2 低压输入对地的绝缘电阻,采用1000V 兆欧表,绝缘电阻>300M Ω;
4.3 高压测与高压输出端阻值,用2500V 的摇表测量应为78M Ω(电压等级50~80kV )或120M Ω(电压等级90~110kV );
4.4 接地可靠,接地电阻不应大于2.0Ω;
4.5 检查整流变压器四周,不得有渗漏油现象,必要时更换密封件。
4.6全密封整流变压器不带储油柜,由油位计指示油位。当油位计显示红色浮标时,此时必须添加变压器油至油标显示蓝色,设备才可运行。
六 常见故障处理
1.1 整流变压器一般检查
1.1.1 用1000V 的兆欧表测量低压绕组对地的绝缘电阻,其阻值应大于300M Ω,否则需检查。
1.1.2 用2500V 的兆欧表测量高压输出“-”极与“高压测”的阻值,额定直流输出电压50kV ~80 kV的设备,阻值为78M Ω,额定直流输出电压90 kV~110 kV的设备,阻值为120 MΩ。若阻值不符,则高压测量电阻击穿,需更换。
1.1.3 用2500V 的兆欧表测量高压输出“-”极对地的绝缘阻值为1000M Ω,否则需检查。
1.1.4 变压器油耐压应大于40kV/2.5mm,若小于35kV/2.5mm,则要进行检查。
1.2 故障判断和处理
当怀疑整流变压器有故障时,可把隔离开关打到“接地”位置,使整流变压器输出端处于开路状态。从控制柜缓慢调节输入电压,正常时升至一次电压200V 时一次电流几乎为0,如发现一次电流有明显指示,则可判断整流变压器有故障,必须吊芯检查。
1.2.1 硅堆板的测试。用2500V 的摇表检查硅堆的正反向极性,若反向阻值为“0”,则可能是硅堆损坏。把硅堆拆下再测试,如反向阻值仍为“0”,则是硅堆损坏;如反向阻值不为“0”,则与之连接的高压电容发生短路。
1.2.2 看绕组外观。如果发现绕组外表面有烧焦或发黄现象,则该绕组存在短路现象。
1.2.3 直流电阻测量:断开各高压绕组与硅堆的连线,用万用表测量各高压绕组的直流电阻,把测量值与标签上的电阻值进行比较,如相差较大,则该绕组被损坏;如相差不大,则需进一步作变比试验判断。
1.2.4 变比试验:用调压器从低压绕组输入U1=5~10V ,观察一次电流的变化,若I1>1A,则肯定有绕组短路。这时,用万用表分别测量各高压绕组的感应电压,同匝数应同电压,否则电压较低的视为短路。若高压绕组同匝数对应同电压,而I1有明显变化,则判断低压绕组有短路现象。
通过以上方法发现绕组、硅堆或高压测量电阻等有问题,则必须进行更换。
范文三:变压器说明书(PLC)
1、安全信息(先阅读)
首先, 感谢您选择深圳市帕瓦科技有限公司PTS/PTI系列变压器产品!
本手册提供给使用者安装、使用、维护本产品的相关注意事项,为了确保能够正确地安装和操作本产品,请在安装使用前详细阅读本手册,若有任何疑问之处请联络深圳市帕瓦科技公司或与代理商洽询,我们的专业人员乐意为您服务。
以下为客户特别需要注意的安全事项,以保证您的生命安全以及保护产品和所连接的设备的安全。这些注意事项在本手册中用警告三角形突出强调并根据危险等级注明如下:
危险:
(1)在实施连接或相关操作之前,务必切断输入电源,否则会引起触电或产品损坏。 (2)请在开启或关闭变压器前,务必先行将变压器后接的负载断开。禁止带负载开
启或关闭变压器,否则会引起变压器故障。 (3)产品通电后,切勿打开机箱触摸任何带电部位。
(4)务必在本产品的前端(输入端)设置断路开关,以保障安全。
警告:
(1)只有合格技术人员才允许安装、操作和维护本产品;
(2)产品安装接线时请务必按照端子标识和产品使用手册的规定连接,切勿将输入、
输出反接;切勿将零线与相线反接。
(3)请按照本产品的额定容量配接负载,长时间连续工作或有冲击性负载或非线性
负载及谐波较大和有零序电流时请留有功率富裕度,切勿超载。
(4)本产品只能用于本手册所认可的环境场合,未经认可的使用环境可能导致火灾、
漏电等事故。
(5)本产品在安装时请妥善接地。
注意:
(1)在安装、操作和维护本产品时,请详细阅读本手册; (2)防止无关人员操作本产品;
(3)本产品顶部不得放置任何物品,不要让导电物体从风扇孔、通风孔、机箱门盖
内进入,否则有可能引起故障、漏电、甚至火灾。
(4)本产品的周边及顶部必须留有足够的通风空间,以及方便进行维护和保养。 (5)请不要擅自拆卸和改装产品,否则会引起故障、漏电、甚至火灾。 (6)产品和产品使用手册可能会有改变,届时恕不另行通知;
(7)本使用手册的解释权归本手册的制定部门,对本手册的任何修改,都必须得到
本手册制定部门的审批。
(8)产品报废时,请作为工业废弃物进行处理或与本公司联系回收事宜。
2、环境要求 2.1、使用环境:
A、无水滴、蒸汽及油性灰尘; B、无腐蚀、易燃、易爆气体、液体; C、无漂浮性尘埃及金属微粒; D 、坚固无振动之基础;
E 、环境条件:室内型:温度:-10℃~+40℃ 湿度:0~90%(无冷凝) 海拔:P ro g ra m C a r d S e t u p S t a s t
””键,来选择不同项目。
将光标移到“Program ”,按“OK ”键,则PLC 切换到编程菜单:
>Ed it C l e ar p ra P a ss w o rd
将光标移到“Edit ”, 按“OK ”键,PLC 切换到:
>E d i t P rg E d i t N a m e A Q i n s to p M em o ry?
将光标移到“Edit Prg”, 按“OK ”键,PLC 切换到编程状态:
此时, 光标在Q1
” 键选择Q1、Q2、Q3、Q4。
假设先选Q1
”移动光标到图形左侧,此时光标闪烁,按“OK
”键,出现
Q 1
SF ”
B 1按“OK ”键,进入到
T rg
”键来选择到,
N o 1N o 2
N o 3
Pa r
Q 1
B 1
Q 1
按“OK
No3下方,按“OK ”键,进入到
B 13+1
D =---------o n =----:---o ff =----:---
在此状态下可设置星期及开关时间。D
完成设置。On 为开机时间,OFF 为关机时间,设Q1(110V 输出电压)为每天13:30开机,14:30关机,则显示为
B 13+1D =M TWT FSS o n =13:30o ff =14:30
M :星期一 设定时间从00:00到23:59任选。 T :星期二
W :星期三 如只有星期二工作则D=-T----- T :星期四 F :星期五 S :星期六 S :星期六
N o 1N o 2N o 3
设置完成后,按“OK ”键,返回到 如需3个时间段工作可分别依以
B 1
Q 1
上方法选择“No1”No2”进行设置,如开通
时间和断开时间冲突,No3时间段优先权高于No2时间段,No2时间段优先权高于No1时间段。
如每天只需一个时间段,则设置完No3后,按“ESC ”键返回到,
>E d i t P rg E d i t N a m e
选择“Edit Prg”。按“OK ”键,再次进入
1
Q 1
将Q1改为Q2或Q3、Q4,B1通过“ OK”键和
键选择为“
SF ”状态,
然后通
过“OK ”键和键选择为“NO1、NO2、NO3” 状态,然后依以上方法分别设置Q2、Q3、Q4开关机时间,如不用可不设置。 设置完成后,按“ESC ”键,返回主菜单,
>P ro g ra m C a r d S e t u p S t a s t
星期 00:00 年 月 日
将光标移到“Stast ”,按“OK ”键,PLC 即可执行程序。显示为
注:1. 如需在执行过程中停止程序,可按“ESC ”键进入,
“OK ”,进入
选择“YES ”,按“OK ”键确认即可退出程序,进入主菜单。
>P ro g ra m
>S to p S et P aram S et P rg N am e
选择“Stop ”,按
>S to p P rg N o Y es
>P ro g ra m C a r d S e t u p S t a s t
C a r d S e t u p S t a s t
2. 如想继续执行程序在主菜单中,
选择“Stast ”,按“OK ”键确认,即可重新执行程序。 3. 如想在执行过程中更改参数,可按“ESC ”键,进入
>S to p S et P aram S et P rg N am e
选择“Set Param”,按“OK ”键,进入编程状态,通过
” 和“OK ”配合更改参数,更改完成后按“OK ”键,即可执行程序。返回运行状态,按“ESC ”键。 4. 删除程序 在运行状态,
星期 00:00
年 月 日
>S to p
按“ESC ”键,进入
S et P aram S et P rg N am e
选择“Stop ”,按“OK ”键,选择“YES ”,按“OK ”键,进入主菜单, 选择“Program ”,按“OK ”键,进入,
>Ed it C l e ar p ra P a ss w o rd
>P ro g ra m C a r d S e t u p S t a s t
选择“Cleat Prg”,按“OK ”键,进入,
>C l ear P rg N o Y es
选择“YES ”,按“OK ”确认。此时程序删除,PLC 中无程序。按“ESC ”返回主菜单,此时可重新编程或关机,待下次使用时再编程。
9、维护保养
当变压器出现故障或疑似故障时,请致电深圳市帕瓦科技公司技术支持部门。当需要深圳市帕瓦科技工程师上门服务时,请确认到达时能否停机检查及是否具备检修条件。如深圳市帕瓦科技工程师按约定时间到达现场后并不具备维修条件,则深圳市帕瓦科技工程师可在客户现场等待4小时。若用户4小时后仍不具备维修条件则深圳市帕瓦科技工程师将与客户商定再次上门时间,再次上门服务费用需要客户另行承担。
注意:
(1)发现输出电压偏离额定电压较多时,首先检查输入电压是在本产品规定的输入
电压。
(2)当变压器有异味时,应检查是否缺相. 负载是否超过变压器的额定电流较多。
如以上情况正常仍有异味时,请通知深圳市帕瓦科技公司或代理商处理。
范文四:变压器说明书
BWD-3K207 series 干式变压器温度控制器
使用说明书
山大华天科技股份有限公司
安 全 指 导
在安装、操作和运行本温控器前,请仔细阅读本说明书,并妥善保管。
本温控器有危险电压,并监控电力变压器,如果不按照本说明书的规定操作可能会导致财产损失或人员严重受伤甚至死亡。
只有合格的技术人员才允许操作本温控器,在进行操作之前,要熟悉说明书中所有安全说明、安装、操作和维护规程。本温控器的正常运行取决于正确的运输、安装、操作和维护。
1、温控器是电子计量产品,其使用寿命为五年,每年需进行周期检验。
2、本温控器只能按照本公司规定的目的和方法使用。未经授权的修改和使用非本公司所出售或推荐的零配件都有可能导致本系统出现故障,甚至损坏。
3、使用前请您详细阅读该说明书。设计部门的工作人员请重点参阅性能指标、外形尺寸、机械安装及电气连接;安装人员请重点参阅外形尺寸、机械安装、电气连接及异常现象处理;使用人员请重点参阅基本操作及异常现象处理。
4、每台温控器在使用前应进行功能测试,以保证使用的可靠性及测量、控制的精度。 5、温控器在运输时应采用原包装,以免造成机械损坏。 6、温控器不使用时,请进行防潮处理。
7、温控器使用时应注意电源等级(无特殊说明时,一般为AC220V 、50Hz )。
8、当您准备使用温控器时,请仔细阅读该说明书的电气连接部分,确认连接无误后再给温控器送电! 9、为保证温控器输入信号质量,温控器正常运行前务必拧紧传感器插头。
10、在干式变压器进行耐压测试前,必须将传感器插头与温控器分离,以避免温控器被损坏。 11、切勿用打火机等明火对传感器探头进行模拟温升试验,否则会损坏Pt100传感器。
12、避免在含有二氧化硫(SO 2)或其他腐蚀性气体的环境中使用本温控器,否则会使继电器的触点失效。
温控器属于电子精密仪表,请客户妥善保管和放置,如确有问题,本说明书上或温控器面膜上有我公司的服务电话,请客户与本公司联系,公司有专人负责处理,谢谢合作。同时感谢您使用我公司的温控器产品,不足之处请您提出宝贵意见。
目 录
概述??????????5 机械安装????????11 性能指标????????6 电气连接????????13 型号简介????????7 基本操作????????19 功能特点????????8 485通讯 ????????26 外形尺寸????????10 异常现象处理??????30
概 述
BWD-3K207系列干式变压器温度控制器是专为干式变压器安全运行而研制生产的高新技术产品。该系列温度控制器采用单片机技术,利用预埋在变压器绕组测温孔中的铂热电阻来测量绕组的温度并进行数字显示,提供绕组超温报警、绕组超温跳闸以及传感器故障报警等功能,使您随时了解干式变压器运行的温度参数,还可以根据设定温度点自动启停风机对绕组进行风冷,有效地提高干式变压器运行的安全性、可靠性及使用寿命。同时产品还提供RS485通讯方式,可方便地与监控系统连接。
本说明书适用的温度控制器有BWD-3K207J(R)、BWD-3K20D6(R)、BWD-3K207D1(R)和BWD-3K207D1P(R)。
用户订货时需按本说明书的功能分类,注明所需仪表的型号。用户对仪表的传感器规格或其他方面有特殊要求的,订货前请说明。 性能指标
工作温度:-10℃~+55℃ 相对湿度:≤95% (25℃) 工作电源:AC220V ±10%,50Hz 传 感 器: Pt100
显示方式:1位相位显示,3位半温度值显示 测量范围:0~200℃ 分 辨 率:0.1℃
1
测温精度:0.5级 控制误差:≤±1℃ 控制温度设定范围:
风机启动温度50~200℃ 风机停止温度50~200℃ 超温报警温度100~200℃ 超温跳闸温度100~200℃ 最大功耗:5W 重 量:1kg
外形尺寸:宽×高×长=160mm×80mm ×145mm 开孔尺寸:宽×高=153mm×76mm
抗干扰性能:优于JB/T7631-94《变压器用电阻温度计》标准要求。
1
检测并巡回显示三相绕组温度或只显示三相绕组中温度最高的一相绕组温度,巡回显示时每相显示5秒。 2、故障报警功能:
传感器断线或输入开路、短路时,温控器自动发出声光报警,面板上的故障指示灯亮,对应相的温度显示为Err 或-Err ,并可以接通故障输出端子,送到远方的控制柜。故障继电器触点容量为AC220V/7A或DC28V/10A。 3、风机启停功能:
当三相绕组中任意一相绕组温度达到设定的风机启动温度时,风机自动启动,风机指示灯亮。当三相绕组温度全部下降到设定的风机停止温度时,风机自动关闭,风机指示灯熄灭。 4、超温报警功能:
当三相绕组中任意一相绕组温度达到设定的超温报警温度时,温控器发出声光报警,并接通报警输出端子,向远方的控制柜送出一开关信号,供控制柜启动声光报警系统。继电器触点容量为:AC220V/7A或DC28V/10A。 5、超温跳闸功能:
当三相绕组中任意一相绕组温度达到设定的超温跳闸温度时,温控器发出声光报警,并接通跳闸输出端子,给远方的控制柜送出一开关信号,启动跳闸电路。继电器触点容量为:AC220V/7A或DC28V/10A。 6、参数设定功能:
可在面板上通过按键直接设定风机启动温度、风机关闭温度、超温报警温度、超温跳闸温度、本机机号和风机定时启动时间,并且在停电后设置数据不丢失。 7、手动启停风机功能:
按“手动”键,风机启动,再按“手动”键,风机关闭;若仅按一次“手动”键,风机启动10分钟后自动关闭。 本功能也可以作为测试风机功能用。 8、风机定时启停功能:
温控器提供定时启动风机的功能,用于防止风机长时间不运行而发生故障。用户可在面板上进行0~200个小时任意设置(当设置为0时,表示取消此项功能),定时时间到达后,风机自动运行2分钟后停止。出厂时设置为24小时。风机每次定时启动运行时间为2分钟,用户无法自行修改。
6
9、消音功能:
当温控器处于声音报警状态时,如有需要可按“消音”键停止蜂鸣器工作。 10、通讯功能:
提供RS-485串行通讯口,经过RS485/RS232转换器,可以与计算机进行通讯,传送距离可达1200米。 11、“黑匣子”功能:
可记录温控器最后4次断电时的三相绕组温度和本机的工作状态,以备查询。 12、温控器功能检测:
用户可通过面板操作模拟温度升高和降低的过程,检测温控器的各项功能是否正常。 外形尺寸 温控器的外形尺寸如下图:
7
建议变压器开孔尺寸
安装示意图
如图示,将温控器嵌入变压器外壳,然后装上温控器的紧固件并拧紧。
如果您要卸下温控器,先卸下紧固件,然后按住安装锁扣,向相反方向从支架上取下温控器。
8
电气连接
a
b .传感器型号: CA 型铂电阻传感器连线图:
Pt100
Pt100
Pt100
CB
Pt100
Pt100Pt100
注:加长电缆两端插头不同,A 端为针型,与温控器相连;B 端为孔型,与普通传感器相连。
9
传感器规格参数表:
c .传感器的安装: 安装步骤:
1、将传感器打开,根据上夹件与变压器低压侧的距离将铂电阻引线拆开适当长度。
2、将传感器铂电阻及引线穿过传感器走线槽,然后将传感器塞入走线槽内,将走线槽固定到变压器的上夹件上。 3、将铂电阻穿过上夹件对应的孔插入到变压器低压侧绕组的测温孔内,铂电阻一定要插到底,然后加以固定。
4、铂电阻安装牢固后,将传感器的插头与温控器后部的传感器插座对准,将传感器插到传感器插座上,并将插头拧紧。 d.
e.
10
超温指示灯跳闸线圈故障警铃
L长度根据用户要求定做,L ≤500m 。
风机
BWD-3K207D6(R)接线示意图: 风风风风风风
电源 AC220&DC28V
BWD-3K207D1(R)
指示灯线圈
AC220V
故障警铃AC220V
超温指示灯 跳闸线圈
AC220V
11
2、首次上电:
温控器接好传感器上电后便处于正常工作状态:三相绕组温度巡回显示,风机处于自动启停状态。 3、最大值显示与三相巡回显示切换:
按面板上的“最大”键,则为最大值显示方式,温控器只显示三相绕组中的最高温度及对应相序,同时“最大”指示灯亮。再按此键,温控器又处于巡回显示状态,“最大”指示灯熄灭。 4、手动启停风机:
当风机没有自动启动时,按“手动”键,风机启动,此时“手动”指示灯和“风机”指示灯亮。再按“手动”键,风机关闭,“手动”指示灯和“风机”指示灯均熄灭。如没有手动关风机,10分钟后风机自动关闭。 5、消音:
按“消音”键则报警声消除。 6、设定值查询:
7、设定值修改:
12
8、查看历史记录:
*工作状态字解释:
0:C相无故障0:A相无故障0:超温报警关闭0:风机自动状态0:B相无故障1:B相有故障
0:超温跳闸关闭1:超温跳闸启动
0:风机关闭1:风机启动
0:三相巡显1:最大显示
9、温控器功能测试:
注意:
1、 为避免引起变压器误跳闸,不提供跳闸输出接点的状态模拟!
2、 若风机处于开路或堵转等故障状态,应先排除故障后再进行功能检测!
3、 上述操作介绍假定温度设定值为出厂设定值,若用户已修改设定值,则根据温控器修改后的实际温度设定值进行状态模拟。 485通讯
在本机中通讯协议采用标准通讯协议。 1、波特率:9600bps
2、数据位:8位数据位,1位启始位,无校验位,1位停止位。 3、数据格式:
所有数据全部为:8位二进制数 下位机上传
3.1 CRC 校验:CRC16 3.2 地址码范围:1-99 (0X01-0X63) 3.3 命令字:01 读线圈状态 03 读数据寄存器
3.4数据长度:从Data 0 到Data n 的个数
3.5数据:
注:若A 、B 、C 、三相有故障,而对应的温度值大于200.0℃则该相为开路故障,若温度值为零则为短路故障。 相对应的 00200-00207 和40200-40206前一次掉电前的数据;
00300-00307 和40300-40306前二次掉电前的数据; 00400-00407 和40400-40406前三次掉电前的数据; 00500-00507 和40500-40506前四次掉电前的数据。
4、通讯实例:
上位机读取下位机风机状态,下位机地址为01 上位机发送:
0 &h01 ; 地址码
1 &h01 ; 功能码 读线圈状态 2 &h00 ;
3 &h65 ; 数据启始地址为 &H0065 (101) 读地址102开始的数据 4 &h00 ;
5 &h01 ; 读一个状态 6 &hED ; 校验码高位 7 &hd5 ; 校验码低位 下位机回送:
0 &h01 ; 地址码 1 &h01 ; 功能码 2 &h01 ;1个数据 3 &h01 ; 风机状态开 4 &h90 ; 校验码高位 5 &h48 ; 校验码低位
上位机读下位机三相温度值,下位机地址为01 上位机发送:
0 &h01 ; 地址码
1 &h03 ; 功能码,读数据 2 &h00 ;
3 &h63 ; 数据启始地址为 &H0063 (99) 读地址100开始的数据4 &h00 ;
5 &h03 ; 读3个数据 6 &hF5 ; 校验码高位 7 &hD5 ; 校验码低位 下位机回送:
0 &h01 ; 地址码 1 &h03 ; 功能码 2 &h06 ;1个数据 3 &h01 ;
4 &h01 ;a 25.7 5 &h01 ; 6 &h15 ;b 27.7 7 &H01 ;
8 &h08 ;c 26.4 9 &h0d ; 校验码高位 a &H0a ; 校验码低位
注:如用户需要其他的通讯协议,请在订货前说明!
异常现象处理
附录:BWD-3K207D1P 使用说明
BWD-3K207D1P 温控器与BWD-3K207系列中的BWD-3K207J 和BWD-3K207D6的基本功能、面板布置和基本操作是完全相同的,用户可阅读BWD-3K207系列说明书。
下面对BWD-3K207D1P 温控器的功能和接线方法进行介绍: 主要功能
1、 三相巡回显示/ 2、 输入开路报警;故障自检报警显示并输出。 3、 线圈超温报警和超温跳闸报警功能并提供输出控制。 4、 自动/手动控制风机功能。
AC220V
为保障温度控制器的安全与正确使用,请务必将该使用说明书随温度控制器一起送达最终用户手中!!!
谢谢合作!
山大华天科技股份有限公司
地址:山东省济南市经十一路17号 邮编:250014 电话:(0531)82950104 传真:(0531)82950104
范文五:变压器说明书
目 录
一、油浸电力变压器安装使用维护说明书 ……………………………. 11
总则 ...…………………………………………………………………………………11 变压器结构简介 ………………………………………………………………………………11 运输 …... ………………………………………………………………………11 验收 …………………………………………………………………11
贮存 ……………………………………………………………………………………12 总装配... ………………………………………………………………………………12 投入运行. ………………………………………………………………………12
二、无励磁分接开关使用维护说明书 ..……………………………………14
使用范围. ……………………………………………………………………. 14
用途 ………………………………………………………………………………14 使用方法 ………………………………………………………………………………. 14 维护 ...…………………………………………………………………………14 三、35 千伏及以下套管使用说明书 .…………………………. 15
用途 ……………………………………………………………………………….15 结构 …………………………………………………………………………….15 维护 ..…………………………………………………………………………. 15
四、吸湿器使用说明书 …………………………………………………………. 16
概述 …………………………………………………………………………………. 16 结构及工作原理 ..…………………………………………………16
使用与维护 .…………………………………………………………16
五、QJ 1-50/80 型气体继电器使用说明书……………………………………17
用途 .………………………………………………………………………………17 结构原理 .……………………………………………………………………………17 技术参数 …………………………………………………………………17
按装使用维护 .…………………………………………………………17
六、WTZ-288型电接点压力式温度计使用说明书 ...……………………………. 19 用途 .………………………………………………………………………………19 工作原理 .………………………………………………………………………19 使用与维护 .…………………………………………………………19
七、玻璃温度计使用说明书 ... ………………………………………20
用途 .………………………………………………………………………………20 结构 .……………………………………………………………………………20 使用维护 .…………………………………………………………20
八、压力释放阀使用说明书 .…………………………………………………21
用途 .………………………………………………………………………………. 21 结构 …….. …………………………………………………………………………. 21 使用维护…. ………………………………………………………….. 21
一、油浸电力变压器安装使用维护说明书
(一)总则
1. 本说明书使用于容量在6300千伏安及以下,电压等级在35千伏及以下的油浸电力
变压器。
2. 油浸电力变压器的技术性能和结构要求,符合国家标准GB1094.1-1996和国际电工
委员会IEC 标准。
(二)变压器结构简介
3. 变压器由铁芯、线圈、油箱套管、无励磁分接开关等主要部件构成。
4. 无励磁分接开关,用于调整电压,它安装在箱盖上。变压器的高压线圈均有分接头,
并与分接开关相连接。用户可根据电网电压进行交换。注意转接分接开关时,必须
先切断高低压侧线路,确定变压器无电时方可进行。
5. 带储油柜的变压器,储油柜上装有油表,便于观察油位,储油柜中的油量应符合油
位标志的要求。储油柜还装有带吸湿剂(硅胶)供“吸湿”和呼吸两用的吸湿器。
6. 变压器箱盖上设有玻璃温度计使用的管座,1000千伏安以上的变压器,在铭牌附
近装有电接点压力式温度计一支,此温度计能按用户要求将温度固定在0~100oC
中的任意点。在运行中,当变压器油的温度超出限值时,此温度计能通过接点装臵,发出讯号警报,使控制系统动作,以保证变压器的安全运行。
7. 容量800千伏安及以上的变压器,在油箱与储油柜的联管上有气体继电器,当变压
器由于油面过低或变压器内部发生故障而产生气体时,使继电器动作,联动保护装
臵,对变压器起保护作用。
8. 容量800千伏安及以上的变压器箱盖上装有压力保护装臵,以保护油箱在变压器发
生故障内压力突增的情况下,不致破坏。
9. 变压器油箱底部设有底座,根据用户要求可装滚轮,共变压器安装和短途运输时使
用。波纹油箱变压器箱盖上设有吊板,(一般油箱的变压器,油箱上装有吊拌),供
吊装变压器使用。
10. 变压器油箱还有放油装臵,油箱下部有接地螺栓,以便油箱接地。
(三)运输
11. 变压器与应附带的零件、配套件、出厂技术文件等一起或另装成箱,同时发运。
12. 起吊变压器时,起吊绳与垂线之间夹角不得大于30 o 。
13. 运输过程中变压器的倾斜度不得大于15 o。
(四)验收
14. 用货单位收到变压器以后,应立即按铭牌查对所收到的产品规格是否与订货合同
相符,随之按出厂文件一览表查对技术文件及产品与附件是否齐全并检查:
(1) 变压器有无漏油渗油现象。
(2) 产品与零件有无损件。
(3) 易损部件:如压力保护装臵、讯号温度计、套管、气体继电器等有无损坏。
(五)贮存
变压器贮放时,油箱油面应该经常保持在箱盖以上,并定期检查其贮存情况,对
于拆卸储油柜运输的变压器,必须装有储油柜,以保证有一定的油压与油量,适应
其温度变化的需要。
(六)总装配
15. 不拆卸运输的变压器即可做投入运行前的试验项目,拆卸运输的变压器下必须先装
好储油柜安全气道及散热器。
16. 装水银温度计,讯号温度计的同时要将温度计内注满变压器油。
17. 将吸湿器的下部加注变压器油。
18. 将散热器及储油柜的蝶阀板门打开,注入合格变压器油至储油柜正常油面高度(视
其环境温度定其油面高度)注油时所有放气塞必须打开,冒油时再密封好。
19. 注入变压器油后,将散热器,气体继电器、套管等的放气塞密封好,并检查所有密
封面,停放24小时后,检查是否有渗漏油现象、并再次放出气体继电器的气体。
在补注变压器油时,必须注意补注变压器油型号、产地或油基,不同型号的变压器
油,一般不得混合使用,若混合使用,需试验合格后方可使用。
20. 变压器如装有气体继电器安装到地基后,储油柜一端应垫高10~15毫米,是变压器
略有些倾斜,以增加气体继电器动作灵敏度。
21. 如果变压器有必要,需吊芯检查时,器身在空气中的停留时间,在干燥的空气中(空
气的相对湿度不大于65%)应不超过16小时,在潮湿的空气中(空气的相对湿度
不大于75%)应不超过12小时,否则器身应重新进行干燥。
(七)投入运行
22. 变压器总装后,投入运行前,应经过如下试验:
(1)测量绝缘电阻,用2500伏兆欧表,所测的绝缘电阻值不低于出厂证明书所测定值70%(换算到变压器出厂测试温度,绝缘电阻的换算系数如下):
二、无励磁分接开关使用维护说明书
使用范围
用途
使用方法
维护
三、35 千伏及以下套管使用说明书
用途
结构
维护
四、吸湿器使用说明书
概述
结构及工作原理
使用与维护
五、QJ 1-50/80 型气体继电器使用说明书
用途
结构原理
技术参数
按装使用维护
六、WTZ-288型电接点压力式温度计使用说明书
用途
工作原理
使用与维护
七、玻璃温度计使用说明书
用途
结构
使用维护
八、压力释放阀使用说明书
用途
结构
使用维护
List
Operation Description for Oil-immersed Power Transformer ……………………………. 11 (Ⅰ) Generals ...…………………………………………………………………………………11 (Ⅱ) Construction ………………………………………………………………………………11 (Ⅲ) Transportation …... ………………………………………………………………………11 (Ⅳ) Check and acceptance …………………………………………………………………11 (Ⅴ) Storage ……………………………………………………………………………………12 (Ⅵ) Assembly ...………………………………………………………………………………12 (Ⅶ) Put into operation .………………………………………………………………………12 Description Manual for Non-excited Tapping Switch ..……………………………………14 (Ⅰ) Suitable range of use .……………………………………………………………………. 14 (Ⅱ) Application ………………………………………………………………………………14 (Ⅲ) Operation ………………………………………………………………………………. 14 (Ⅳ) Maintenance ...…………………………………………………………………………14 Description Manual for Porcelain Bushings (35kV and below) .…………………………. 15 (Ⅰ) Application ……………………………………………………………………………….15 (Ⅱ) Construction …………………………………………………………………………….15 (Ⅲ) Maintenance ..…………………………………………………………………………. 15 Description Manual for Desiccator …………………………………………………………. 16 (Ⅰ) Generals …………………………………………………………………………………. 16 (Ⅱ) Construction and working principle ..…………………………………………………16 (Ⅲ) Operation and maintenance .…………………………………………………………16 Description Manual for Model QJ1—50/80 Gas Relay ……………………………………17 (Ⅰ) Application .………………………………………………………………………………17 (Ⅱ) Construction .……………………………………………………………………………17 (Ⅲ) Technical parameters …………………………………………………………………17 (Ⅳ) Operation and maintenance .…………………………………………………………17 Description Manual for Model WTZ—288 Electric Contact ...……………………………. 19 (Ⅰ) Application .………………………………………………………………………………19 (Ⅱ) Working principle .………………………………………………………………………19 (Ⅲ) Operation and maintenance .…………………………………………………………19 Description Manual for Glass-stem Thermometer ... ………………………………………20 (Ⅰ) Application .………………………………………………………………………………20 (Ⅱ) Construction .……………………………………………………………………………20
(Ⅲ) Operation and maintenance .…………………………………………………………20 The Instruction of Press Releasing Valve .…………………………………………………21 (Ⅰ) Instruction .………………………………………………………………………………. 21 (Ⅱ) Structure …….. …………………………………………………………………………. 21 (Ⅲ) Usage and maintenance …. ………………………………………………………….. 21 Operation Description for Oil-immersed Power Transformer
(Ⅰ) Generals
1. This manual tends to give proper operation information of the oil-immersed transformer with capacity of 630kVA under voltage of 35kV and below.
2. Technical performance and construction of the transformer are inconformity with standard GB1094.1-1996 and IEC.
(Ⅱ) Construction
3. The transformer is composed of core, coil, tank, bushing, non-excited tapping switch etc. .
4. The non-excited tapping switch mounted on tank cover is used to adjust voltage. There are terminals on the high voltage side of the transformer to connect with the tapping switch .Before shifting the tapping switch, this can be done on user ’s own according to location network voltage, care must be taken to switch-off both electric circuits of high and low voltage side and ensure the transformer is at non-voltage state.
5. The conservator is fitted with oil gauge to observe level of oil in the oil tank. Oil capacity in the conservator should meet with the requirement shown by mark on the oil gauge. There is also desiccators serving the function of desiccating and breathing in the conservator.
6. There is a socket on the tank cover for mounting the glass-stem thermometer. The transformers with capacity of 1000kVA and above are in conjunction with an electric contact pressure thermometer near by name plate, it can maintain oil temperature at any point between 0 oC-100 oC according to users requirement. When operating, if oil temperature exceeds predetermined device to put control system into action and ensure the transformer for regular operation.
7. For the transformer with capacity of 800kVA and above, there is a gas relay on connecting pipe between oil tank and conservator, when producing gas owing to too lower oil level or other inner faults, the gas relay is brought into action and actuates protective device to prevent the transformer form damage.
8. There is a safety gas channel on tank cover of the transformer with capacity of 800kVA and above. As the pressure in oil tank rises suddenly to 1.5-1 atm. , the film glass
9. There is a base frame on bottom of the oil tank. Under it wheels can be mounted for installation and short-way transportation of the transformer. Cover of the corrugated oil tank transformer is fitted with lifting plate (plain oil tank is fitted with lifting lug) for lifting transformer.
10. Also oil tank is incorporated with oil draining device and earthing bolt.
(Ⅲ) Transportation
11. The transformer is transported together with accessories, extra parts and technical documents in a case or individual case.
12. When lifting transformer, tilted angle of lifting rope should not be over 30.
13. During transportation, slope of the transformer should not be over 15.
(Ⅳ) Check and acceptance
14. After receiving the transformer, user should verify immediately whether the specifications given in name plate of the transformer are in conformity with the order contract and according to delivery document check whether technical information and accessories are complete, and then examining the following:
(1) Whether oil leakage is present.
(2) Whether the transformer and parts are in good condition.
(3) Quick-wear parts, such as film glass in safety channel, alarm thermometer, bushing and gas relay are without any damage.
(Ⅴ) Storage
As the transformer is to be stored for a long time, oil level in tank should be kept above tank cover and periodically check the storage condition of the transformer. If the transformer unassembled conservator for transporting is to be stored, the conservator should be assembled again to maintain some oil pressure and oil capacity and accommodate the change in temperature.
(Ⅵ) Assembly
15. After receiving the transformer which is non-disassembled in transportation can be put into survey before operation. For the unassembled transformer, the conservator, safety gas channel and heat radiator should be assembled, then, the survey can be done.
16. In the same time of assembling glass-stem transformer and alarm transformer, fill up transformer oil into transformer socket.
17. Fill lower portion of the desiccators with transformer oil.
18. Open butterfly valve between the radiator and conservator; fill with correct transformer oil to required oil level. (Base on ambient temperature). During filling, all exhaust plugs should be opened, as the oil spilled form the conservator, seal up the exhaust plugs.
19. After filling oil, seal up all exhaust plugs on the radiator, gas relay and bushing etc., and check all sealing surfaces. Bring the transformer into static state for 24 hours then check whether oil leakage is present and gas is exhausted form the gas relay. If is necessary to replenish oil, the oil to be replenished should be in the same as the original oil in type, manufacturer or oil base. Usually, different oil should not be mixed to use, if not, test must be taken then qualified oil can be used.
20. When mounting the transformer fitted with gas relay, the end on which conservator is mounted should be raised up for 10-15㎜ to increase sensitivity of the gas relay.
21. During lifting the core for examination, time of transformer body exposing to the weather
should not be over 16 hours in dry air (relative humidity is not over 65%) and 12 hours in wet air (relative humidity is not over 75%). Otherwise, the body should be dried again.
(Ⅶ) Put into operation
22. After assembling and before putting into operation, the transformer should undergo following tests:
(1) Measure insulating resistance by means of 2500V mega-ohmmeter. The measured
resistance value should not be less than 70% rated value given in the delivery certificate, then, the measured resistance is converted into the resistance which is measured at the temperature of delivering the transformer. Conversion coefficient of the insulating resistance as follows:
Note: Where t2=Temperature when practical measuring,
t 1 =Corresponding delivery temperature
As the temperature is of negative value, inverse of the coefficient given in the table should be taken.
(2) Measure D. C. resistance.
(3) Put it to the test under high voltage and power frequency for one minute, the voltage is
90% as the testing voltage when delivery.
(4) No-load testing under the voltage less than 130% rates value for half minute, in so
doing, care should be taken to observe the change in temperature phone and meter display.
(5) Measuring no-load current and loss and making a comparison with the product
certificate. Above tests are performed after 10 hours filling temperature with oil.
(6) As a satisfactory testing result is obtained the temperature can be put into operation on
load.
(7) During operation, all temperature displaying and oil displaying devices, protective
devices and sealing portion should be checked frequently to ensure reliable service.
Description Manual for Non-excited Tapping Switch
(Ⅰ) Suitable range of use
1. This manual gives the information dealing with the non-excited tapping switch used for
adjusting voltage under no-load, it is matched with three-phase and single-phase temperatures at rated voltage of 10kV, current of 350A and below, and rates voltage of 35 kV, current of 120A and below.
(Ⅱ) Application
2. The non-excited tapping switch is employed for adjusting output voltage by means of shifting
winding turn of the temperature.
(Ⅲ) Operation
3. Only after switching-off both electric circuits at the high and low voltage sides and confirming
the transformer is at no-voltage state, the non-excited switch can be operated.
4. Remove shield, loose positioning parts. Adjust main interconnected shaft to desired tapping
position to set up the required voltage then fasten the positioning parts and cover the shield. (Ⅳ) Maintenance
5. During operation, as it is necessary to change tapping position, rotate the switch to and for
above ten times to remove oxide film and oil dirty stuck on the switch contacts. If oil leakage occurs on sealing parts, fasten the sealing bolts. If oil leakage occurs on sealing parts, fasten the sealing bolts. If rubber seals are aged, hardened, rotted or split, the rubber seals should be replaced. During operation, if no change in voltage is needed, also it is necessary to rotate the switch to and for above ten times per year.
6. After the switch is adjusted to the desired tapping position, should measure D. C. resistance
to check whether the contact is at good condition. As the lead wire form temperature to the switch are renewed when maintaining the temperature, in addition to measure D. C. resistance, voltage ration should be measured to examination whether connection of the lead wire is correct.
Description Manual for Porcelain Bushings (35kV and below)
(Ⅰ) Application
By the aid of high and low voltage porcelain bushings mounted on the cover of temperature, the lead wires form H. V. and L. V. windings of the temperature can be connected with outer H. V. and L. V. electric circuit separately. The requirements of the bushings for voltage and working current depend upon the rated voltage and current of windings connected with the bushings. The conduction portion of the bushings should be in reliable connection and possesses excellent electrical performance and the insulation has sufficient insulating voltage-resistant performance to ensure a long time in regular operation.
(Ⅱ) Construction
The bushing is made up porcelain sheaths, rainproof cap, conductive rod, nut, washer, seal gasket and other parts. The low voltage bushings, rated voltage is less than 1kV, have a compound structure, i. e. they consist of upper and lower porcelain sheaths and fixed onto tank cover by means of the conductive rod and nut. The H. V. bushing are of cable pull-through type or rod pull-through type, the cable pull-through type bushing has a short conductive rod, lower end of the rod is connected with winding through annealed rope copper wire or round copper wire.
The H. V. bushings is fixed in the tank cover by bolts welded onto the tank cover and clamp. Sealing surface of the H. V. and L. V. bushings are constructed with seal ring made of oil proof rubber.
The 35kV H. V. bushing should be filled with temperature oil in its cavity and so an exhaust bolt should be filled on the conductive rod.
The combination of all accessories of the H. V. and L. V. bushings is separable, so the H. V. bushings a be replaced without lifting the temperature core.
(Ⅲ) Maintenance
1. Before putting the transformer into operation, check should be taken whether the H. V.
and L. V. bushings are without damage and crack, accessories are complete and no oil leakage occurs on sealing portion.
2. The connection between the conductive rod and electric circuit should be reliable. Do
not screw up the nut by overexerting force to avoid the damage to the conductive rod.
3. During operation, surface of the bushings should be kept clean to prevent form
flashover discharge caused by deposited dust (only when the H. V. and L. V. bushing is at deenergised state the cleaning can be performed).
4. Prevent the bushings from stricking of heavy and violent vibration and timely renew
damaged bushings.
5. As there is oil leakage on sealing portion screw up the nut corresponded with the
leakage position. If the leakage is caused by aged and deteriorated rubber seals, renew the rubber seals.
6. Before replacing damaged bushing or other parts, drain the temperature oil in oil tank
until the oil level is lower than tank cover, then remove the bushing or other parts which are to be replaced. For 35kV bushing, before draining oil, the exhaust bolt on conductive rod should be screwed off.
Description Manual for Desiccators
(Ⅰ) Generals
1. These desiccators is employed for removing impurity and wet entered into conservator
of transformer as there is a change in temperature of the transformer.
(Ⅱ) Construction and working principle
2. The body of the desiccators is a glass tube which is fitted with silicon rubber, as a
hygroscopic agent, immersed with cobalt chorile.
Lower shield is filled with transformer oil being function as filler to remove impurity.
3. As there is an expantion or shrinkage in oil volume owing to the change in load or
ambient temperature, the air in the conservator is forced to breathe out or breathe in. So impurity and wet in the air can be removed to ensure insulating strength of temperature oil.
4. Colour of silicon rubber is white and blue at drying state. After absorbing wet the white
one changes into yellow, blue into red. This shows that the silicon rubber has been out of the hygroscopicity, drying or replacing should be given.
(Ⅲ) Operation and maintenance
5. Before using, check whether the glass tube has been broken, the silicon rubber
changes into pink color. Fill shield with transformer oil, then, check whether sealing portion is tight to prevent form leakage of gas.
6. When replacing user silicon rubber, disassemble the desiccators from transformer and
remove its cap, then, renewing of the silicon rubber can be performed via the outlet at base.
7. After during at 140°C for 8 hours, the wetted silicon rubber may change into white or
blue color, if not, extend the time of drying until the silicon rubber entirely changes into white or blue color.
8. During operation, frequent monitor should be taken to find out whether the silicon
rubber in the desiccators changes in color and the transformer oil is reduced in volume owing to vaporization. As the silicon rubber changes into color and oil level is too low or oil is dirty, dry or renews the rubber according to the procedure given in above item 7, and replenishes or replaces the transformer oil based on item 5.
Description Manual for Model QJ1—50/80 Gas Relay
(Ⅰ) Application
Model QJ1-50/80 gas relay (hereinafter called relay for short) is a protective device used
on oil-immersed transformer with conservator. It is mounted on the connection pipe between oil tank of transformer and the conservator.
(Ⅱ) Construction
The construction of the relay core is shown in following sketch. When the transformer
operates regularly, the relay is filled with transformer oil. As a slight fault occurs in the transformer, the oil level drops down by force of gas form resalved oil. When the open-cup E drops to a limited position, the spring-contact R is closed by, means of the magnet D, thus making signal circuit and giving out a fault signal. As lowering of the oil level is caused by oil leakage, the same fault signal can also be given out. When heavy fault occurs in the transformer, this may make an oil surge and oil flow in connection pipe, the oil flow strickes on the apron plate L and makes it motion. When the plate l arrives on a predetermined position, contact P is closed by the magnet M and so the tripping circuit is switched-on, thus, all electric circuist can be cut-off to apply a protection on the transformer.
(Ⅲ) Technical parameters
1. Working temperature -30°C~+95°C
2.
(1) Bore diameter of pipe ?50㎜ (QJ1—50)
?80㎜ (QJ1—80)
(2) Gas volume to actuate 250~300㎝3
signal contact
(3) Speed of oil flow making 0.6~1.2m/s (QJ1—50)
trip contact action 0.7~1.5m/s (QJ1—80)
(4) Rated capacity A. C. 220V 0.3A
D. C. 220V 0.3A (S≯ 5x 10-3 sec)
(5) Insulation strength
(6) Sealing performance
Filling the gas relay with transformer oil and bring a pressure of 15㎏/㎝2 to
bear on it for 20 minutes, no oil leakage is present.
(7) Shock proof performance
When shock frequency (sin wave) ranges from 4 to 20Hz and acceleration is 4g (g
= gravitational acceleration), there is no fault action on the gas relay.
(8) Weight approx 10㎏.
(Ⅳ) Operation and maintenance
3. During mounting take out the core of relay, remove binding tape, check whether all
fastening screws are without ant loose, the open-cup and plate can move easily, the contacts can open and close reliably and the lead wires are reliable connected.
4. Setting gas volume. By changing position of the heavy weight F, the gas volume can
be adjusted in the range of 250-300㎝3
5. Setting speed of oil flow: Before delivering, this speed has been adjusted to 0.7m/s
(model 70) and 1m/s (model 80). If other setting of speed is needed, loose regulating bolt Q to change length of spring K, thus the speed of oil flow making trip contacts actuation can be set up.
6. The bolt N is employed for regulating the distance between the magnet M and the
spring contact P(usually this distance ranges 0.3-1.0㎜). Do not randomly adjust the bolt.
7. After checking and regulating, put the core into cavity of the relay (the cavity should be
cleaned with transformer oil), then fix the gas relay to connecting pipe between oil tank and conservator. When mounting, care must be taken that the arrow the arrow marked on the relay should point to the side at which conservator is mounted.
8. After mounting, open oil valve on the connecting pipe, fill the relay with oil, then
remove the cap of nozzle on gas plug C, loose needle B, gas in the relay can be exhausted until the oil spillers from exhausting hole.
9. By blowing air into the relay via the air plug T, the action reliability of the signal contact
can be examinated.
10. Screw-off the cover A, probe G, the action reliability of the trip contact can be
examinated.
11. The gas relay is unsuitable fo0r use in the location with heavy shock and strong
magnetive field and its working temperature should be in the range of -40°C~100°C to avoid demagnetization. The fittings near by the magnet and spring-contact should be made from non-magnetic materials.
12. Do not randomly remove the spring contact, especially, the lead wire should not be
bent wantonly to prevent from damage.
Description Manual for Model WTZ—288 Electric Contact
(Ⅰ) Application
This transformer is used to measure the temperature transformer oil surface, it is also in conjunction with glass-stem thermometer. The transformer can give out an alarm signal through electric contact system and actuate controlling system to ensure a safety and reliable pertain of the transformer.
(Ⅱ) Working principle
The construction of this device is shown in the following sketeh. Depending on the relationship between temperature and pressure of saturated steam arising from vaporable liquid in a sealed measuring system, the oil temperature can be measured through this transformer. The bulb 1 filled with chloroform or other gas is connected with the single-coil hollow-spring 3 through the capillary 2. When the bulb is heated in hot transformer oil, the pressure force of saturated steam arising from vaporable liquid in the bulb is transmits to the hollow spring and making this spring deformation, in the meanwhile, by the aid of the pull rod 4which is connected with loose end of the hollow-spring, the gearing 5 is driven and enables the pivot 7 fitted with needle 6 to rotate an angle, thus, the temperature of the hot transformer oil can be indicated on the dial. Position of the limit indicating needles 9and 10 can be adjusted by means of a special key, in so doing, position of the superior and inferior limits of the electric contacts are also determined. When measuring, the moveable contact runs after the needle 6. As the needle 6 comes to the limited position, the moveable contact is in touch with the superior limit contact or inferior limit contact and alarm signal can be given out. (Ⅲ) Operation and maintenance
1. Before operating, take care to check the effectual time of the thermometer.
2. The thermometer is suitable for use in the location with ambient temperature of 5°C~60°C and relative humidity less than 80%.
3. The thermometer should be fixed on the mounting board without vibration, and keep it at the same level with the bulb to reduce additional error.
4. Check whether all contacts are in good condition, fill socket pipe of the thermometer with transformer oil. Passing through the socket pipe, immerse the bulb into oil, the fix the thermometer onto the socket. The meter dial is mounted on wall of the transformer tank or special board at outside of the cooler.
5. Radius of bending curvature of the capillary should not be less than 50㎜. The capillary must be straightened and fixed with clamps. The distance between the clamps is not over 300㎜.
6. Adjust the needles which display the position of the superior and inferior limit contacts to desired position by special key.
7. Frequent working temperature of the thermometer should be in the range of 1/2~3/4 measuring limit value.
8. Under any condition (transportation, installation or operation), the thermometer should
be prevented from shock and strick.
Description Manual for Glass-stem Thermometer
(Ⅰ) Application
The glass-stem thermometer mounted on the cover of transformer tank is employed for measuring the temperature of oil upper layer when the transformer operates.
(Ⅱ) Construction
The sheath for packing thermometer is fixed onto the cover of tank by nut and sealed with sealing washer. The lower end of the sheath is immersed into oil.
(Ⅲ) Operation and maintenance
1. During transportation, the thermometer should be removed and packed separately. After installation and before operation, put the thermometer into place as following procedure:
Remove the plug. Fill socket pipe with transformer oil. Carefully put the thermometer into the pipe.
2. When taking reading of temperature, care must be taken to keep away from voltage side to avoid electric shock.
3. As the temperature rise exceeds the value specified in the technical requirement, check should immediately be taken to learn whether operation of the transformer is regular or on condition of overload. Then, adopt necessary measure timely to ensure safe operation of the transformer.
The Instruction of Press Releasing Valve
(Ⅰ) Instruction
It can be used on the transformer which is isolated from liquid or gas. It fixed on the top
of cover or oil box of the transformer. When the inside of the oil box full of lots of gas, because of the malfunction of transformer, and the press raising rapidly, the press releasing valve will release the press drop down enough to make the press releasing valve close itself, so, the oil box be protected.
(Ⅱ) Structure
Press releasing valve is consist of base seat, film, pole, rubber circle, flange, spring, etc. It fixed on the top of cover or oil box of the transformer.
(Ⅲ) Usage and maintenance
It can be maintained at time the facility be shut down and maintained:
1. If the action of switch is yare
2. If the rubber circle is aging. It must be replaced after ten years of the date of production.
3. Clearing the inside of valve. Accessories should be replaced on time if there are rusted or shape changed or damaged.
Note: The nut should be loosed and sheet metal must be dismantled before
switch on, and the screw down the nut.