變壓器直流電阻測(cè)試儀 一、產(chǎn)品特點(diǎn) 變壓器歐姆表 本機(jī)具備輕巧、便攜、容易操作、安全、精確等特點(diǎn)??蓽y(cè)量各式變壓器及旋動(dòng)機(jī)械裝置的直流電阻值,它也可測(cè)量在各連接處接點(diǎn)處及控制線路的低直流電阻值。 五、技術(shù)參數(shù) 測(cè)理原理:電子湯普森型電路
二、產(chǎn)品說明
此測(cè)試裝置也能檢查帶載分接變換器的適當(dāng)操作,這包括斷路操作的閉合和接觸電阻的測(cè)量。
三、產(chǎn)品應(yīng)用
此表用于:
1.驗(yàn)證廠內(nèi)測(cè)試讀數(shù);
2.作為定期維修的部分項(xiàng)目;
3.對(duì)有載分載開關(guān)進(jìn)行聯(lián)通檢查;
4.協(xié)助定位變壓器的現(xiàn)在缺陷,如松連接。
用該設(shè)備在定期維修時(shí)極為有效的測(cè)量繞組阻撓。如選定基準(zhǔn),可比較一系列測(cè)試結(jié)果來決定變壓器中的變。一繞組中的直流阻抗變化,表明短接、固定不牢或分接開關(guān)的虛接。
變壓器歐姆表通常用于以下設(shè)備:
1)功率變壓器 2)配電變壓器
3)儀表變壓器 4)輔助控制繞組
5)步進(jìn)調(diào)壓器 6)電動(dòng)機(jī)
7)發(fā)電機(jī) 8)斷路器觸點(diǎn)
9)各種連接(栓接、焊接、壓接等)
此測(cè)試裝置也能檢查帶載分接變換器的適當(dāng)操作,這包括斷路器操作的閉合和接觸電阻的測(cè)量。
四、產(chǎn)品特征
輸入:240V,40Hz,350VA
輸出:電流量程:5mA、50mA、500mA、5A(d.c.)
開路測(cè)試電壓:30Vd.c.
阻抗測(cè)量輸入:兩絕緣高阻輸入
量程:
標(biāo)稱(歐姆) 分辨率(歐姆) 顯示(歐姆) 2 0.001 1.999 20 0.01 19.99 200 0.1 199.9 2000 1.0 1999
標(biāo)稱(歐姆) 分辨率(歐姆) 顯示(歐姆)
2m 0.001m 1.999m
20m 0.01m 19.99m
200m 0.1m 199.9m
2 0.001 1.999
20 0.01 19.99
200 0.1 199.9
2000 1.0 1999
精度:±讀數(shù)0.5%,±全量程0.5%,
超量程:可指示
環(huán)境:操作—0~40℃ 相對(duì)濕度80%
儲(chǔ)存-40~65℃
濕度系數(shù):±使用精度0.05%
顯示:兩高溫,18㎜ 3 1/2液晶數(shù)字顯示,速率大約每秒三次
尺寸: 儀 器208H×406W×267D㎜
運(yùn)輸箱330H×508W×533D㎜
重量:儀器凈重 18㎏
運(yùn)輸 30㎏
ORDERING INFORMATION
Item
Transformer Ohmmeter
120 volt ,50/60Hz input
240 volt ,50/60Hz input
Included Accessories
Lead set , including
Potential leads, 33 ft (10m) [2pr]
Current leads, 33 ft (10m) [1pr]
Shorting leads, 9.9 ft (3m) [1]
Universal bushing adapters [set of 4]
AC power cord
Transport case
Instruction manual
Optional Accessories
Lead set , including
Potential leads, 66 ft (20m) [2pr]
Current leads, 66 ft (20m) [2pr]
Shorting leads, 9.9 ft (3m) [1]
Transformer Ohmmeter
Transformer Winding Resistance and Tap-changer Test Set
- Dual independent channels for simultaneous measurements on two windings
- Built-in safety discharge and shut-down feature
- Tests operation of on-load tap-changers
This lightweight, field portable unit safely and accurately measures the DC winding resistance of all types of transformers and rotating machines. A built-in circuitry safely discharges the specimen when the test is completed, if load accidentally disconnected or if line power is lost.
The Transformer Ohmmeter is extremely useful when testing the operation of on-load tap-changers. This instrument can be used to check the make-before-break operation of on-load tap-changers and also to measure the contact resistance of each tap position.
3677