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油浸式变压器保护用高压限流熔断器
从属类别:高压系列   

□本产品适用交流50Hz,额定电压10KV,在变压器中与其它保护电器(如:负荷开关等)配合使用,作为电力变压器及其它电力设备 的过载或短路保护。主要用于美式箱变中作后备保护用。
□The product can be used in system with AC 50Hz and rated voltage of 10KV, used togethe r with other protection electtic faciIities(such as loading switches). It can protect electtic transformers and other electtic faciIitles against overloading or circuit break. It is mainly used in American style box transformers as backup protection.
◆型号说明Type instruction
◆基本参数Basic parameters
熔断器的基本参数如表1 See chart for the fuse of basic parameters
型号 Type 额定电压(KV)
Rated voltage KV
最高工作电压 (KV)
Max working voltage KV
熔断器额定电流 (KA)
Fuse rated current KA
熔体额定电流 (A)
Rated current of fuse link A
OFG 10 12 125 63,80,100,125
200 160,200
◆主要技术特点Major technical characteristics
1、熔断器在规定的使用条件下,能可靠分断最小开断电流(2.5-5)ln至额定开断电流为50KA之间的任何故障电流。
2、熔断器时间-电流特性如图3,最小开断电流以上部分为虚线。    3,限流特性如图2。
1,The fuse link can break any problem current between the minimum break current(2.5-5)In to rated break current 50KA.
2,See chart 3 for the fuse time-current property.The upper section above the minimum break current is broken line.
3,See chart 2 for limn current property.
◆外型及安装尺寸Installation Dimensios
熔断器的外形及安装尺寸如图1所示。See Chart 1 for the fuse external structure and installation dimensions.
◆正常使用条件Conditions for normal use
熔断器正常使用于变压器油中,周围的温度上限不超过100℃
When the fuse link is in normal use in transformer oil,the max environmet temperature is less than 100℃



图1熔断器外形及安装尺寸图Chat1Fuse link external sturcture and installation dimensions

注:用户需要较长尺寸的熔断体件可与制造厂联系 Note:of longer fuse is needed,Please contactthefactofy.

弧前时间 (S) Pre-arc time(S)
预期电流有效值 (A) Anticipated limit current valid value
图3 OFG.OKG时间-电流特性曲线
Chhart 3 OFG.OKG time-current property
截断电流峰值 (A) Out-off current(A)
预期电流有效值(A)Anticipated limit current valid value
图2 OFG.OKG限流特性曲线
Chhart 2 OFG.OKG limit current property

◆概述General
□ZGR3 (XRNT5)-15.5油浸式变压器短路保护用高压限流后备熔断件(以下简 称熔断件)适用于交流50Hz,额定电压15.5KV,额定电流至75A的高压户内电 力系统,作为电力变压器的短路保护。它与ZGR4(PRNTl3)-15.5油浸式变压 器过载保护用高压熔断器串联可提供全范围保护。
□ZGR3(XRNT5)-15.5H.V.current-limiting back-up fuse for short-circuit protection of oil-immersed transformer(here-under fuse) is availab-le ailable for H.V. indoor electric system,with rated voltage 1 5.5Kv,rated cu rrent up to 175A, 50Hz a.c..It is used for protecting from short-circuit for power transformer.It can offer protection of all-round together in series with ZGR4(PRNTl3)-15.5 H.V.fuse for overload rotection of oiI-immersed transformer.
◆标准 Standard
符合GB15166.2交流高压熔断器 限流式熔断器
Accord with GB15166.2 Alternating-current high-voltage fuses Current-limiting fuse
◆订货号Order number
额定电流 (A) Rated Current 订货号 Order Number
31.5 ZGR3-31.5
40 ZGR3-40
50 ZGR3-50
63 ZGR3-63
80 ZGR3-80
100 ZGR3-100
125 ZGR3-125
150 ZGR3-150
175 ZGR3-175
◆基本参数Basic parameters
额定电压 KV 熔断器额定电流 A 熔体额定电流 A 外形尺寸 额定短路开断电流 A
17.2 125 31.5、40、50、63
80、100、125
图1 50
175 150、175 图2
正常工作条件:熔断件正常使用于变压器油中,周围油的温度上限不超过100℃
◆型号说明Type instruction



◆熔断器的选用
ZGR3、ZGR4熔断器的选用推荐
用于10KV级油浸式变压器初级端熔断器的一般选用指南
变压器容量 (KVA) 额定电流 (A) ZGR3额定电流 (A) ZGR4额定电流 (A)
50 2.75 31.5 6.3
100 5.5 40 10
160 8.8 63 16
200 11.0 80/63 25A
250 13.7 80 25A
315 17.3 100 40A
400 22.0 125 40A
500 27.5 150 50A
630 34.6 175 63A
800 44.0 100双拼 63A
1000 55.0 100双拼 100A
1250 68.7 125双拼 140A
◆外型及安装尺寸Installation Dimensios
熔断器的外形尺寸及安装尺寸见图1
ZGR3-15.5/(31.5-125) A熔断器外形尺寸
熔断器的外形尺寸及安装尺寸见图2
ZGR3-15.5/(150-1 75) A熔断器外形尺寸

◆熔断器的结构Construction
熔断器为螺栓连接结构
熔断器是由熔体、熔管、帽、石英砂、骨架、密封圈等组成。熔体由纯银加工成高精度的变截面带状体。熔体有序地缠绕在骨架上 放置在熔管内,管内填充满石英砂作为灭弧介质。为适应浸入变压器油中使用,在帽和熔管之间采用密封圈,并用耐油、耐高温的 胶粘剂粘接,设置两道密封防线来确保可靠封口。
◆熔断器的安装、使用、维护

熔断器推荐水平安装
□当熔断器断后,必须换上型号尺码和参数相同的新熔断器,切勿以其它器件代替,在更换熔断器时,发现熔断器的 熔管发黄属于正常现象。□对三相安装的熔断器,除非已肯定仅其中一只承担过故障电流,否则即使一只熔断器动作,其它两只均应更换。
□熔断器的额定电流至175A。当用户需要更大电流等级时,推荐使用双拼熔断器。同时在使用双拼时要考虑到温度相互 影响因素,般要熔断器降容10%-20%使用。

熔断器的时间.电流特性 The Timecurrent Characteristic Of The Fuse
时间-电流特性曲线 ZGR3后备熔断器

熔断器的时间-电流特性 The Timecurrent Characteristic Of The Fuse
熔断器额定电流为1 50A、1 75A的时间-电流特性曲线

◆型号说明Type instruction
◆熔断器的性能Performance
熔断器不允许单独使用,必须与后备熔断器串联组成全范围熔断器。在组合上应充分考虑熔断器和后备熔断器的保护特性。图1为熔 断器和后备熔断器的时间-电流特性曲线。图中A点为两曲线的交点。B点为后备熔断器的额定最小开断电流。C点为熔断器额定最大 开断电流。当熔断器与后备熔断件组合使用时,首先A点必须存在,其次B点位于A点之上,C点位于A点之下。
Fuse can’t be used aIone. It must be used in series with the back-up fuse to become protection of alI-a round. In using,the characteristic of the fuse and the back-up fuse must be considered enough. Figure the time-current characteristic of the fuse and the back-up fuse. A in figure is a point of the meeting two curves. B is min. breakina capacity current of the back-up fuse-Iink C is rated max. breaking capacity current of the fuse. When fuse wiII be used in series with the back-up fuse-Iink, first the point A must be existence,second the point B is above the point A and the point C is below the point A.
◆订货号Order number ◆图 熔断与后备熔断器保护特性配合图
额定电流 A Rated current 熔断件订货路号 Fuse-link Order number STR4底座订货号 Fuse-base Order number
6.3 STR4-6.3 STR4-D
10 STR4-10
16 STR4-16
25 STR4-25
40 STR4-40
50 STR4-50
63 STR4-63
100 STR4-100
140 STR4-140



◆概述General
ZGR4(PRNTl3)-15.5油浸式变压器过载保护用高压熔断器(以下简称熔断器)适用于交流50Hz,额定电压15.5KV,额定电流 至140A的高压户内电力系统,它必须与ZGR3(XRNT5)-15.5油浸式变压器短路保护后备熔断器(以下简称后备熔断器)串联才能 组成作为电力变压器的过载和短路保护,即提供全范围保护。熔断器在全范围保护作用中仅用来保护变压器二次侧短路故障及小范 围的故障电流。
.ZGR4(PRNTl 3)-1 5.5H.V_Fuse For Overlcad Protection Of OiI-immersed Transformer(here-under fuse) is avallable for H.V.indoor electric system,with rated voltage15.5KV,rated current up to 140A,50Hz a.c..It is used for protecting from overlcad and short-circuit for power transformer.It can offer protection of all-round together in series with ZGR3 (XRNT5)- 1 5.5H.V.current-limiting back-up fuse for short-circuit protection of oll-immersed transformer(here-under back-up fuse).In the protection of all-round fuse is only used protection to short-ircuit malfunction of the secondary side of transformer and malfunction cu rrent of the small area.
◆标准Standard
符合GB15166.3交流高压熔断器喷射式熔断器
Accord with GB15166.3 Alternating-current high-voltage fuses Expulsion fuse
◆熔断器的结构Construction
熔断器为插杆式结构。它由熔断件、底座、手柄组成,熔断件帽的一端为喇叭形,另一端为漏斗形。熔断件插入手柄中 的螺丝管内,喇叭形帽端与手柄的握柄部分通过螺纹可靠接触。漏斗形帽通过展平帽的上端与螺丝管接触良好,用末端螺栓 加以固定。手柄插入底座,转动手柄的锁扣,锁住熔断器。
Construction of fuse is insertion. The fuse consist of a fuse-link a fuse-base and a fuse-carrier.Fuse’s plugs are contact flare and tulip tip.
◆基本参数Basic parameters
额定电压 (KV)
Rated voltage
15.5
最高电压 (KV)
MAX.voltage
17.2
熔断器额定电流 (A)
Rated current of the fuse-link
140
熔体额定电流A
Rated current of the fuse-element
6.3、10、16、25
40、50、63、100、140
使用环境
Operating condition
变压器油中
in the transformer oil
额定最大开断电流KA
Rated short-circuit breaking capacity current
2.5

熔断器的外形尺寸和安装尺寸图3                熔断器的外形尺寸图2

熔断器的外形尺寸及安装尺寸Dimensions of the Overall and Installation

◆熔断器的安装Wedge

步骤:
1、打开手柄上的锁扣,从底座中拔出手柄;
2、用板手旋松手柄中螺丝管和末端螺栓;
3、松开螺丝管和末端螺栓;
4、把熔断件插入螺丝管内;
5、熔断件的喇叭形帽必须装在螺丝管和握柄之间;
6、用扳手固定握柄,扭矩约5.6—7.9N.m。
7、展开熔断件漏斗形帽。
8、用一个扳手卡住螺丝管端部螺栓,用另一个扳手旋紧末端螺栓,扭矩约5.6—7.9N.m。
9、把手柄插入底座,转动手柄的锁扣,锁住熔断器。

Sl EP:
1、Unlock fuse holder latch handle,draw the fuse holder out from the base.
2、Use a wrench to remove fuse cartridge from fuse cartridge and end plug.
3、Remove fuse cartridge and end plug.
4、lnsert fuse link into fuse car-tridge.
5、Fuse-link’s trumper tip must be fixed between fuse cartridge and fuse cartridge holder.
6、Use a wrench to tighten fuse cartridge holder using 5.6-7.9N.m of torque.
7、Sp read tulip tip.
8、Use a wrench to straighten edge plug and the other tighten end plug using 5.6-7.9N.m
of torque
9、lnsert handle into the base,rotate fuse holder latch handle:and lock the fuse.
◆注意事项Notice
1、熔断器手柄插入底座应用力插到位,压紧并旋转锁扣使手柄在锁住位置时确保不锈钢垫圈在熔断器管的肩节处,手柄闭锁在肩节处,以 保证箱变全密封,不进潮气。
2、当熔断器装在油箱内,油箱内的油面应在图3所示的范围内。
3、当溶断器动作后需要更换熔断件,打开手柄上的锁扣,转动手柄90°,以消除密封垫圈和外管间的粘附作用,拔出手柄。
4、当熔断件熔断后,必须换上型号和规格等参数相同的新熔断件,切勿以其它器件代替。
5、对三相安装的熔断器,除非已肯定仅其中一只承担过故障电流,否则即使一只熔断器动作,其它两只均应更换。
6、熔断器的开断会引起油的变质、污染和炭化。
1.A slight resistance may occur when inserting fuse-link into cartridge.When the fuse cartridge holder is locked.the steel’s packing ring. is the shoulder of the fuse cartridge.So the bin can be ensured to sealed and not be into wet air.
2.When the fuse is into the oil bin.the oil level in the oil bin is as shown in Figure 3.
3.When replacing fuse-link,unlock fuse holder,turn fuse holder 90 in the housing to break the seal between the seal packing ring and
housing,d raw the fuse holder out.
4.If damaged,the type and main technical data of the new fuse-link must be same completely,not to replace by the other.
5.The fuse in three phase,one of fuses is damaged,the other will be replaced,unless one of them has been known to be breaking
Operation.
6.Breaking of fuse will be cause the metamorphosis of oil.pollution and carburetion.



熔断器的时间-电流特性 The Timecurrent Characteristic Of The Fuse
时间-电流特性曲线