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MT-5030 Digital Insulation Tester
User’s Manual
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1 Introduction
The digital megohmmeter uses the DC-excited transducer to convert DC
12V to DC high voltage 1000V/2500V. The main amplifier tests the
insulation voltage by the current ratio measurement of traditional megger.
The input terminal uses micro-current to test anti-interference circuit and
the output terminal adopts the division function of double integrating digit al
voltmeter to process the data conversion. It is characteristic of strong
loading capacity, high anti-interference of electric field, portable operation,
wide range, backlight display and so on. It could also be used to test
commercial electric power. With its stable performance and high grade
appearance, it is widely used to test the insulated voltage resistance for
electrical equipment, instrumentation, cables and so on.
2 Appearance Description
1~4: Voltage Selection Switch (It
includes AC750V/200M/
2GΩ/20GΩ)
5: Voltage Selection Switch
(1000V/2500V) (except
AC750V)
6: Power Switch: Self-locking
power switch
7: High voltage indication: LED
display.
8: Test Switch
9: LCD display: display the
measuring value and unit
symbol.
10:Instrument mode
11: L: jack for circuit under test.
12:G: Protection jack. When the object under test is requested to add the
protection ring to eliminate leakage effects, the electrode wire of
protection ring should be connected to "G" jack
13. ACV: Input end for AC voltage measurement.
14. E: Jack for object under test.
15. Power adapter jack .
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3 Technical Features
Basic function
Range
Basic
accuracy
Output Voltage
1000V/2500V
±10%
Short-circuit current
<4mA
√
200MΩ:6.0-199.9MΩ
±(5%±5 digit
2GΩ:0.06-1.999GΩ
±(5%±5 digit
Insulated
resistance 1000V
20GΩ:0.6-19.99GΩ
±(5%±5 digit
200MΩ:5-199.9MΩ
±(5%±5 digit
2GΩ:0.05-1.999GΩ
±(5%±5 digit
20GΩ:0.5-19.99GΩ
±(5%±5 digit
Insulated
Resistance 2500V
200GΩ:5.0-199.9GΩ
±(5%±5 digit
Voltage Measurement
AC750V
±(1% +6 digit
Jack Position
Insulated Resistance:
L. E. AC750V: ACV. G
3.1General Features
(1) Display: 84.8×59.8mm LCD display. The max display “1999”.
(2) Over range indication: the MSD shows "1" when it is over ranged.
(3) Alarm function: the meter will alarm automatically when the tested
resistance is below the lower range and the reading is invalid.
(4) Power supply: AA batteries (1.5) ×8.
(5) Low battery indication: “ ”displays
(6) Operation environment: temperature 0 40℃ 30% R.H- 85% R.H
(7) Weight: Approx.566g (not including batteries)
3.2Technical index
ACV750V input impedance: 1MΩ.
ACV750V frequency response: 50 200 Hz.
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4 Operating Instruction
4.1Open the back cover of
the battery case and put
the 5# batteries (8) (see
the pictures). Be sure the
batteries are placed in
correct polarity.
4.2Push the power switch
button "POWER".
4.3Selected the voltage under test according to measurement needs
(1000V/2500V)
4.4Selected the range switch according to measurement needs
4.5High voltage output terminal, which connects to tested circuit by special
cable.
G: Protection terminal, which connects to the protection terminal of
three electrodes and eliminate the leakage effect of the tested surface.
E: Ground terminal, which connects to the GND of the tested objects.
For example, connects to the metal shell of tested polarity, transformer
core, the cable shield, the earth and the artificial discharge wand.
4.6Press the test switch, and the test starts. The reading is available when
the display value becomes stable. After the reading is finish, release the
test switch.
4.7If the MSD displays "1", it means over range, please set a higher range
to read data.
5 Insulated Resistance Measurement
6 Safety Precautions
6.1Pay attention to safety! L is high voltage
output terminal! E terminal must be connected to ground; the tested
object must be removed from power network and could only be
connected or disconnected after artificial discharge to prove safety.
During measurement, try to avoid high voltage sparking discharge.
Frequent sparking will cause damage to the instrument.
6.2When measuring, please check if the selected testing voltage accords
with the voltage supplied by LCD or panel.
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6.3The symbol“ ”indicates lack of battery power, please replace
batteries accordingly.
6.4When measuring, unstable reading may c aused due to environmental
interference or unstable insulated material. Please connect “G” terminal
to the shied side of the tested object to get a stable reading.
6.5Keep the instrument away from humid place and avoid direct sunlight in
case the life of LCD Monitor is affected.
6.6To guarantee the safety of measurement, the silicone rubber cable line
is used. Don't replace the measuring line at random.
6.7When the external adapter is used, it will disconnect the battery power
automatically. Please don't charge the batteries at this time. No te:
Please select power supply mode.
7 The Whole Components of the Instrument
• Megohmmeter x 1
• Measuring leads x 2
• Instruction Manual x 1
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MT-5030絕緣測試儀操作手冊
1.介紹
數位化的 megohmmeter使用直流 DC-excited轉換器把直流 12V轉換成直流
高電壓 1000V/2500V。主要放大器測試採用傳統 megger的電流比率量
測，測量絕緣電壓的電流。輸入端子使用微電流測試抗干擾電路和輸出端
採用雙功能整合數位電壓表來處理數據轉換。它的特點是承載能力強，高
抗干擾的電場，手提式操作，大測試範圍，背光顯示等等。它也可以用來
測試商業電力。憑藉其穩定的性能和高規格的外觀，它被廣泛用於測試絕
緣耐電壓電氣設備，儀器儀表，電纜等。
2.外觀描述
1.2.3.4.電壓選擇開關(包括 AC750V/200M/ 2GO/20GO)
5.電壓選擇開關 (1000V/2500V)
(除 AC750V之外)
6.電源開關︰電源開關自動上
鎖.
7.高電壓指示︰LED表示。
8.測試開關
9.LCD 螢幕︰顯示測量的結果
10.儀器模式
11. L:迴路測試插孔。
12. G:保護插孔。當被測對象是
要求增加保護迴路，
以消除漏電影響，電線的保
護迴路應該連接到“G”的
插孔。
13. ACV︰AC電壓測量的輸入
14. E :測試物品插入孔。
15.電源變壓器插入孔 （ ）.
和單位符號。
端。
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3.技術特性 (產品特性)
基本功能
範圍
準確度 (誤差)
輸出電壓
1000V/2500V
0%
短路電流
<4 mA
v
200MO︰
6.0-199.9MO
±(5%±5 digit）
2GO︰0.06-1.999GO
±(5%±5 digit）
絕緣阻抗 1000 V
20GO︰0.6-19.99GO
±(5%±5 digit）
200MO︰5-199.9MO
±(5%±5 digit）
2GO︰0.05-1.999GO
±(5%±5 digit）
20GO︰0.5-19.99GO
±(5%±5 digit）
絕緣阻抗 2500 V
200GO︰5.0-199.9GO
±(5%±5 digit）
電壓測量
AC750V
±（1% +6 digit）
插孔位置
絕緣阻抗： L、E AC750V: ACV G
3.1.一般的特徵
(1)螢幕︰84.8×59.8mm LCD 螢幕。 最大顯示值 999
(2)超過範圍指示：當 MSD顯示“1”時，表示超過測試範圍。
(3)警報功能：當測試阻抗低於下限和讀值是無效的時候 ，測試儀器會自
動警報。
(4)電源︰ AA電池 (1.5) ×8
(5)低電壓指示：當出現“ ”表示測試儀器電壓太低
(6)操作環境︰ 溫度 0 ~40 ℃，濕度 30%R.H ~85%R.H
(7)重量︰ 大約 566克(不包括電池)
3.2技術指標
ACV750V 輸入阻抗：1MΩ.
ACV750V頻率響應：（50～200）Hz
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4.操作指南
1.打開電池底蓋並且放 AA電
池 8顆 (圖示) .確定電池
被放在正確的極性裡。
2.按下電源開關 " POWER"按
鈕.
3.根據測量需要選擇測試電壓
（1000V/2500V）
4.根據測量需求選擇範圍開關
5. L:高電壓輸出端，連接到測試電路的特殊電纜 。
G :保護終端，連接到保護終端三個電極，
消除測試物表面漏電的現象 。
E :接地端子，測試物品連接到 GND。例如，連接到金屬外殼的極性測試，
變壓器芯，電纜遮蔽層，地球和人工放電棒。
6.按測試開關開始測試。當螢幕數值趨於穩定後閱讀數值。閱讀完成後，
鬆開測試開關。
7.如果 MSD 顯示" 1 " ,表示測試值在範圍之上，請設定更高的範圍來讀
取數據。
5.絕緣阻抗測試
6.安全注意事項
1.注意安全！ L為高電壓輸出終端! E終端
必須連接到地面，被測試的物品必須遠離
電源處，連接或斷開後只能以人工方式放
電證明安全。在測量期間，盡量避免高壓
火花放電。頻繁的火花會導致儀器損壞。
2.當測量時,透過 LCD螢幕請檢查被選擇的
測試電壓與電源電壓是否一致 。
3.符號“ ”表示電池電力不足，請更換
電池。
4.測量時，由於環境干擾或不穩定的絕緣材料可能會造成不穩定的讀
值。請連接“G”終端迴避一邊讓測試物品可以獲得穩定的讀值 。
5.儀器遠離潮濕的地方並且避免直射陽光，以防止 LCD 顯視器的壽命被
影響。
6.為了確保測量的安全，必須使用矽橡膠電纜線。不要隨意拿取測量線
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代替。
7.當使用外部電源時 ，會自動切斷電池電源供應 。請不要在這個時候進
行電池充電。注：請選擇（ ）供電方式
7.儀器的配件
•Megohmmeter儀錶 1只
•測試線 2付
•說明書 1份
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©2011 Prokit’s Industries Co., LTD. All rights reserved 2011001(T)
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