Megger AVO
MIT300 MIT310 MIT320 MIT330
绝缘电阻与连续性测试仪
主要特点：
l 操作极其简单
l 全塑料外壳设计
l 自带多种保护保险
l 带电电路指示
l 携带方便
特征利益：
MEGGER的MIT300系列带有数字与模拟的显示方式，20㎜宽的显示屏上提供了数字显示和在试验一个模拟仪器时，在它的弧形模拟显示上有一个模拟指示。它的长方形设计和仪器的平衡性可以使你把它挂在脖子上，而空出双手去操作别的东西。它有一系列的安全保护措施，包括：安全互锁、安全接触指示器、带电压警告、安全停工和连续性检查。其绝缘与连续性试验性能，能使各款仪器能对各种固定配线装置，方便检测。
技术参数：
绝缘量程
测试电压：1000 V, 500 V, 250 V (d.c.)
测量范围
短路电流：1.5mA
带负载的测试电流：最小1mA
精确度（20° C)
MIT300, MIT310, MIT320, MIT330: ±3%, ±2 位数
MIT310A: 标度尺的长度的±2.5% (或者读数的 30% 200 kΩ到 10 MΩ)
连续性范围
测量：0,01 Ω - 100 Ω (0 -50 Ω 模拟刻度)
断路电压：5 V ±1 V
短路电流：205 mA, ± 5 mA (0 to 10Ω) (>20 mA 高达 100Ω)
精确度 (20° C)
MIT300, MIT310, MIT320, MIT330: 3%, ±2 位数
MIT310A: 刻度长度的±2.5% (或者读数的 30% 0.2Ω到 200 MΩ)
零(点)偏移调整:
MIT300, MIT310, MIT320, MIT330: 0 - 9 Ω
MIT310A: 0 - 0.5Ω
阻抗范围 (MIT 320 和 MIT330)
(可以用来测试二极管)
测量范围: 10 Ω - 1 MΩ
断路电压: 5 V
短路电流 : 1.5 mA,
精确度 (at 20°C): ±5% ±2 个数字
电压范围
测量范围0 - 600 V a.c. (50/60 Hz) 或者 d.c.
精确度 ( 20° C)
MIT300, MIT310, MIT320, MIT330: d.c. 或a.c. (50/60Hz): ±1%,±2 位数
MIT310A: 刻度长度的±2.5% 50/60Hz
温度系数：所有量程上0,1% 每 °C
环境
操作范围：10°C 到 +60°C
操作湿度：3% R.H. 在 +40°C .
储存温度: -25°C 到 +70°C
仪器保护: IP54
结果存储和下载
容量: >1000 测试结果
下载: USB 下载线1.8m (提供的)
下载导线：类型A到类型B
电源
电池: 8 x 1,5 V 电池 IEC LR6 类型(AA碱性).可充电镍镉电池或者镍电池
电池使用寿命
5000 组连续测试 (5 秒/次)
尺寸
203 x 148 x 78 mm
重量
980gms
Megger MIT300 series
Insulation tester for electricians
• Extremely easy to use
• Tough rubber armoured case
• Self contained protective cover
• Live circuit warning
• Weatherproof to IP54
• Intelligent Safety System for protection.
MEGGER INSULATION TESTERS COMBINE SAFETY WITH DURABILITY
Developed, after extensive customer research, specifically to meet the needs of today's electrical contractors, the new MIT300 range of insulation and continuity testers from Megger is not only durable and easy to use, but also incorporates a comprehensive set of features designed to ensure operator safety, even under conditions of accidental misuse.
The range includes four models, ensuring an exact match for the needs of every user, all of which offer automatic discharge of the circuit after testing, audible and visual warning if the test probes are applied to a live circuit, and a test inhibit feature which operates automatically under live circuit conditions. The units also conform fully to IEC 61010-1 for use in Category III 600V applications, and provide all of the facilities needed to meet insulation testing requirements relating to the current edition of the IEE Wiring Regulations.
In line with other products in Megger's comprehensive new contractor range, MIT300 insulation testers feature rugged construction, with an impact-resistant rubber-overmoulded case, and innovative circuitry which guarantees high accuracy combined with stability of calibration.
All instruments in the new range provide indication of insulation resistance up to 999Mohms, 200mA continuity testing, a fast-reacting continuity buzzer, and facilities for nulling the resistance of the test leads. The entry-level MIT300 offers insulation test voltages of 250V and 500V, while the remaining models allow testing at 250V, 500V and 1,000V.
In addition to the basic features, the mid-range MIT310 adds a default voltmeter function, while the MIT320 supplements these facilities with an a backlit display, illuminated range panel, insulation limit alarm, resistance measurement, and an adjustable threshold for the continuity buzzer. The MEGIT320 is also supplied with a switched test probe to speed hands free testing.
An illuminated switched test probe is available as an optional extra for use with the MIT320.
The MIT310, MIT320 and MIT330 testers incorporate dual solid-state displays which simultaneously show the test results numerically, and in the form of a moving-arc bar graph that accurately simulates the operation of an analogue meter.
The MIT330 additionally offers the facility to save test results to internal memory. Over 1000 result can be saved on site, and downloaded to a computer when convenient.
Data is stored in non-volatile memory, being retained when the instrument is switched off or batteries are exhausted.
A Job reference number can be selected for a range of results, allowing separate locations to be tested with the same tester and easily separated when downloaded.
A memory bar graph acts as a ‘Fuel Gauge’ showing how much memory has been used. Test results are downloaded to CSV (Coma Separated Variable) spreadsheets. If certificates or reports are required, the results can be downloaded directly into Megger Powersuite Professional with a range of features for creating professionally finished documentation.
All testers come complete with a full calibration certificate. For users who prefer a true analogue device, however, Megger is offering the MIT310A which has features similar to those of the MIT310, but with a conventional moving-coil meter movement in place of the digital display.
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