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JSH-4B type arrester online monitor

Key words:JSH-4B type arrester online monitor


A, scope of application 
JSH type arrester online monitor (ne arrester leaks current and action recorder) is communicate arrester online monitor apparatus in high pressure electric power system, should apparatus section milliammeter with arithmometer for one body, connects in series in arrester ground loop.Milliammeter be used for monitor execute voltage under by arrester leakage current crest value in monitor, can effective field checkout come out arrester inside whether be affected by damp and cold or inside groupware whether abnormal situation, arithmometer then records arrester action time under overvoltage. 

JSH- 3 type monitor design finger style action arithmometer, arithmometer faceplate big, convenients for distant place observation; increase by shine administer compose leak current alarm device, much obvious field give a clue inspect personnel pay attention to and during the night observation.Boundary dimension small appearance beautiful, installs convenience; outside meets measure jack (select install) makes outside meet measure appearance convenience field connect in series in leak current loop.Fors example by cable lead into center console cabinet, convenients for centralize stakeout; or cutovers obstruct sex current measurement appearance, at nots stop under electric situation, to arrester practice online monitor.

JSH- 4 type monitor at JSH- 3 type and make significant improvement on monitor’s basis, JSH- 3 type lacks zhi place consist in: In wet weather, porcelain sum of ostensible leaks current along together come into in monitor’s milliammeter, makes milliammeter zai zai porcelain a sum of appearance leak current big situation under in monitor, can not real field reflect arrester porcelain sum of internal problem, so some consumers by oneself adopt at porcelain increase a metal shield ring neighborhood a sum of base, will be porcelain a sum of appearance leak current lead into field in method, settles upmentioned product’s lack.JSH- 4 type monitor then changes into disthrone treasure, increase a piece of milliammeter in monitor, will shield ring collect arrester porcelain sum of appearance leak current- Symbols insulate dirt extent reflect out outside substation, make JSH- 4 type monitor much a characteristic.

JSH- 4 type monitor withs stainless steel fabricate screen ring and hot model insulation draw down-line, porcelain sum of exterior leaks current by fix at porcelain sum of bottom about 20mm metal ring above flange, boots right milliammeter, graduation is use reflect dirty a layer conductivity uS come denotative in milliammeter, it consider our country chief arrester manufacturing plant use porcelain sum of climb electricity distance and insulator shape factor, watches upper level graduation apply common porcelain skirt, lower level graduation applied size prevent dirty porcelain skirt. 

Two, uses environment 
1. Indoor or outdoor; 
2. Environmental temperature ± 40℃; 
3. Electrified wire netting rated frequency 50Hz or 60Hz; 
4. Installs place have no strong oscillation; 

Three, chief electric parameter 
JSH- 3A, JSH- 4A type monitor cooperates with 330-500 kilovolts electrified wire nettings use arrester; 
JSH- 3B, JSH- 4B type monitor cooperates with 110-220 kilovolts electrified wire nettings use arrester; 
JSH- 3C, JSH- 4C type monitor cooperates with 66 kilovolts and under electrified wire netting use arrester; 


Kind
Milliammeter man measuring span (mA) (crest value)
There is has not uS watch
2mS sides waves impact flow capacity (A)
4/10uS impacts go to flow ability (kA)
Marks weigh dash current (kA)
Marks weigh deformity press under dash current (kA)
Most petty action current (A) crest value
Marks weigh arithmometer action right rate under dash current (%)
2h works frequently leak current overload ability (mA) (crest value)
Normal creepages flow voltage both ends recorder (v) (effective value)
JSH-3A
9
have not
2000
100
20
<1.5
<5
100
100
<10
JSH-4A
9
there is
2000
100
20
<1.5
<5
100
100
<10
JSH-3B
3
have not
1200
100
10
<1.5
<5
100
100
<5
JSH-4B
3
there is
1200
100
10
<1.5
<5
100
100
<5
JSH-3C
0.9
have not
800
65
5
<1.5
<5
100
100
<5
JSH-4C
0.9
there is
800
65
5
<1.5
<5
100
100
<5


Four, appearance and installs illustrate 
SH- 3 type monitor appearance picture be like picture one show, JSH- 4 type monitor appearance picture be like picture 2 show. 

JSH- 3 type, JSH- 4 type monitor installs height suit to properly, as convenient operator on duty look clear monitor in milliammeter and action take count of finger.(picture 3, picture 4) 

Connections hold meet arrester insulate base top monitor, outer shell’s fixed hole earth. 

JSH- 4 type monitor is equipped with have stainless steel shield ring and insulate draw down-line, shields ring install at porcelain about 2cm above a sum of base, passes equip with insulate down-lead, will shield ring with monitor porcelain sum of in metal ring fastness connection, insulates down-lead usableness insulate bring fix draw down-line on at arrester, fors fear wind blow time swing.JSH- 4 type monitor bilateral fixation kong ju, with JSH- 2 type same, so if need will JSH- 2 type replacing for JSH- 4 type, very is convenience, only need will JSH- 2 type tear open under, at aboriginal hole location installs and then be OK. 

Five, maintain and execute
1, glass have dust effect observation time on monitor escapement inspection hole, usablenesses cloth or paper wipe go dust.Can not have small bead in glass, if discovers have huge amount of beads, illustrate monitor seal up performance has already met with breakage, can with our company contact change. 

2, checks action arithmometer time in monitor, a kind of simplest meanses are use 110-250V alternating currents, will monitor put insulation thing on, uses alternating current one end touch on outer shell, another one end short-time touch once porcelain sum of on connection hold, this moment arithmometer’s finger can move once, touch once move once.If outer shell already conductive earth, then needs distinguish communicate electric fire, ground wire, will ground wire meet outer shell, live wire touches connection hold.Another kind of means is use 1000 and above insulate shake watch to microfa grade capacitor charge, then will be capacitor to monitor discharge.Each sets free once electricities, takes count of finger should jump once in monitor, milliammeter finger greatly swings once behind, recovered go at first position. 

3, uses outside meet leakage current survey appearance time, first will right under jiao outside meet socket cover rotate open, uses common television plug (stamen a gleam of is in empty style) inserts meet jack outside monitor, and then be OK will outside meet measure appearance connect in series cutover leak current loop.Measure finish, please must will jack cover rotate enter. 

4, monitor brings into operation behind, observes each look milliammeter finger whether basically unanimously in monitor.Requests inspect personnel pay attention to observation, in time record, once discovers milliammeter designation change abnormal and exceptional look monitor red shine administer lucency, wants timely to the authority concerned reflect. 

5, if day at rainy day and fog, JSH- 3 type milliammeter designation generally augmentation in monitor, red shines administer all lucencies, illustrates is porcelain a sum of exterior leakage current increase cause.JSH- 4 type monitor uS watch has designation, if in green range, illustrates dirt not heavy, if in crimson range, illustrates dirt seriously, pleases in time clean. 

6, if execution voltage have fluctuation time, milliammeter designation all can have little changes in monitor, this is normal. 

7, in executive monitor, ifs have certain exceptional monitor’s milliammeter designation have obviously change, pleases refer following experience disposal: 

7.1 By two sections and above groupware composes arrester, take place defection inside thereinto a section groupware, and gradually development time, milliammeter designation gradually augmentation in monitor, ifs than original value augment 30%, then need alert; ifs than original value augment 50%, then needs in time retirement, otherwise will take place accident. 

7.2 If adopt JSH- 3 type monitor monitors cell groupware arrester, is like 110 kilovolts voltage grades arresters, bigalopolis is single section groupware composing, once be affected by damp and cold at rainy day, milliammeter has can not distinguish between is porcelain sum of inside or porcelain sum of exterior leak current augment, be affected by damp and cold inside single section groupware arrester, maybe can not go on go then take place breakdown behind rain.Suggest changes to JSH- 4 type monitor. 

7.3 If milliammeter’s designation decrease, has even already went back to zero position, mayed was insulate base insulate descend many or was short, too mayed was header or groupware was damage inside monitor.This time uses digital universal meter alternating voltage measure monitor both ends voltage, if voltage unders 3V or have not voltage, illustrates insulate base insulation level descend or short.If voltage for about 8-10V, then illustrates header or groupware already damage in monitor. 

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