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可攜式200A大電流微歐姆計

TENTECH 200A High Current Micro-Ohmmeter 型號：MPK203x

微處理器控制型、字母數字顯示幕。
解析度0.1μΩ；電阻讀值達20mΩ；測試電流達200A。
採用Kelvin型4線式測量法。
內建記憶體可儲存多達200個讀值。
數位式直接讀值與顯示可達4½位數。
過熱保護；配備USB介面；內建感熱式印表機。
應用：能以最高達200A的測試電流，精準測量高壓斷路器與開關、匯流排...等的極低接點電阻。

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產品特點產品規格 Features Specifications

- 微處理器控制型。
- 字母數字顯示幕。
- 解析度：0.1μΩ。
- 電阻讀值達：20mΩ。
- 測試電流達：200A。
- 採用Kelvin型4線式測量法。
- 內建記憶體可儲存多達200個讀值。
- 數位式直接讀值與顯示可達4½位數。
- 過熱保護。
- 配備USB介面。
- 內建感熱式印表機。
- 應用：能以最高達200A的測試電流，精準測量高壓斷路器與開關、匯流排...等的極低接點電阻。
- 系統簡介：
  - MPK203x大電流微歐姆計為可攜式微處理器控制型儀器，配備適合在電氣變電所進行測量的最佳濾波器與保護功能。
  - 採用4端測試法（電壓/電流測量原理），可避免由測試導線及其接點電阻造成的測量誤差。
  - 先進的信號放大系統，能確保測量精度 - 無偏移及具有高度的長期穩定性。
  - 在字母數字顯示幕上顯示電阻讀值，可達4½位數解析度。
  - 可測量電阻達20mΩ，最佳解析度為0.1μΩ。
  - 測試電流可由操作員調整，並以類比條狀圖形式顯示其數值。
  - 內建記憶體可儲存多達200個讀值。
  - 配備USB介面，可連接至電腦，以便下載儲存的數值。
  - 大電流產生系統採用現代技術，可大幅減少儀器的重量與體積。
  - 機箱採用高度耐撞擊性塑膠材質製成。
  - 在所有敏感元件中的內部熱感測器，能避免因過熱而對儀器造成的任何損害。
  - 輕量、強固，單人即可輕鬆攜行；防水，並可在惡劣的天氣條件下使用（關閉上蓋時為IP54防護等級），能在實驗室與現場提供優異的性能。
- 測試電流：
  - 100A、200A（真DC）。
  - 電流可從0%到100%連續調整。
- 電阻範圍：
  - 0～1999μΩ（測試電流達200A）。
  - 0～19.99mΩ（測試電流達100A）。
- 讀值解析度：
  - 0.1μΩ＠R < 2000μΩ。
  - 1μΩ＠R < 20mΩ。
- 輸出電壓：
  - 3.5Vdc@200A。.
  - 4.5Vdc@100A。
  - 5.8Vdc（無載）。
- 最大負載電阻：
  - 10mΩ@200A。
  - 30mΩ@100A。
- 測量原理：4端點式，電壓/電流。
- 熱保護：可保護所有敏感元件，避免因過熱造成任何損壞。
- 連續操作時間：
  - 200A：可連續操作約1分鐘，才啟動熱保護功能。
  - 100A：可連續操作約15分鐘，才啟動熱保護功能。
- 基本精度：±0.5% rdg. ±2位數。
- 先進功能：
  - 數位式直接讀取極低電阻值及顯示在螢幕上達4½位數。
  - 超快速及精準的測量。
- 內建記憶體：可儲存多達200個測試讀值。
- 介面：USB。
- 防護等級：IP54，關閉上蓋時。
- 安全等級：符合IEC 61010-1標準的要求。
- 電源：主要電源220 – 240V~。
- 體積/重量：502x394x190mm/11kg。
- 詳細規格、配件、軟體及選購，歡迎洽詢。
- Microprocessor controlled
- Alphanumerical display
- Resolution: 0.1 μΩ
- Resistance reading: up to 20 mΩ
- Up to 200 A test current
- Kelvin-type (4-Wires) measurement
- Internal memory for up to 200 readings
- Direct reading (up to 4½ digits)
- Overheating protection
- USB interface
- Built-in printer
- Applications: Can be used to accurately measure very low contact resistances of high voltage circuit-breakers and switches, busbars, etc., with test currents up to 200 A.
- Description:
  - The MPK-203x high-current micro-ohmmeter is a portable, microprocessor-controlled instrument. Has optimized filters and protections for measurements in electrical substations.
  - It employs the 4 terminals-method (U/I measuring principle) to avoid errors caused by test leads and their contact resistances.
  - Measurement accuracy is guaranteed by a state-of-the-arts signal amplification system, offset-free and of high long-term stability.
  - Resistances readings are shown in the alphanumeric display with up to 4½ digits-resolution.
  - It allows to measure resistances up to 20 mΩ, and the best resolution is 0.1 μΩ.
  - Test current may be adjusted by the operator and his value is measured using an analog indicator (bargraph).
  - It has an internal memory for up to 200 readings.
  - The USB interface may be connected to a computer to download the stored values.
  - The high-current generation system is based on modern technology that allows to significantly decrease both its weight (approx. 24.25 lb ) and size.
  - The cabinet is made of plastic material highly resistant to impacts and to environmental challenges.
  - Internal thermal sensors in all sensitive components avoid any damage caused to the instrument due to overheating.
  - This is strong but lightweight equipment, and may be easily carried by one person. It is water-resistant and can be used under severe weather conditions (IP54 with closed lid) offering an excellent performance working both in the laboratory and out in the field.
- TEST CURRENT:
  - 100 A, 200 A (True DC).
  - The current may be continuously adjustable from 0 to 100%.
- RESISTANCE RANGES:
  - 0-1999 μΩ (test current: up to 200 A).
  - 0-19.99 mΩ (test current: up to 100 A).
- READING RESOLUTION:
  - 0.1 μΩ for R < 2000μΩ.
  - 1 μΩ for R < 20 mΩ.
- OUTPUT VOLTAGE:
  - 3.5 Vdc @ 200 A.
  - 4.5 Vdc @ 100 A.
  - 5.8 Vdc (without load).
- MAXIMUM LOAD RESISTANCE:
  - 10 mΩ @ 200 A.
  - 30 mΩ @ 100 A.
- MEASUREMENT PRINCIPLE: Four-terminal, U/I.
- THERMAL PROTECTION: Protects all sensitive components, avoiding any damage due to overheating.
- CONTINUOUS OPERATION TIME:
  - At 200 A this equipment may be used continuously for approx.1 minute before the thermal protection activates.
  - At 100 A this equipment may be used continuously for approx.15 minutes before the thermal protection activates.
- BASIC ACCURACY: ±0.5 % of reading ± 2 digits.
- ADVANCED FEATURES:
  - Digital direct reading of very low resistances in the alphanumerical display, with up to 4½ digits.
  - Very fast and accurate measurements.
- BUILT-IN MEMORY: It allows the storage of 200 tests readings.
- INTERFACE: USB.
- ENVIRONMENTAL PROTECTION: IP54 (with closed lid).
- SAFETY CLASS: Meets the requirements of IEC 61010-1.
- POWER SUPPLY:
  - Mains: 220-240 V~.
- EQUIPMENT WEIGHT: Approx. 24.25 lb (11 kg).
- DIMENSIONS: 502 x 394 x 190 mm
- Please feel free to contact for detailed specifications, accessories, software and options.

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可攜式200A大電流微歐姆計

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