手持式开关柜局放检测仪
LECOM PD-LSGS
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瑞士LECOM集团新产品： PD-LSGS手持式局放检测仪，英国工厂生产，是一款具有双传感器的开关柜局放检测仪。
该检测仪能检测开关柜内部放电产生的TEV信号以及表面追踪产生的声学放电。双传感器包括：内置TEV传感器和内置超声波传感器。
在TEV模式下，PD-LSGS能探测开关柜内部局放引起的快速瞬时脉冲，当传感器紧靠开关柜的面板时，仪器的液晶屏将会显示局放活动的等级，LED灯可以指示PD是否超出临界阈值。
该检测仪的内置扬声器将局放PD活动解调至人耳能听见的频率，这样，在检测时，用户可以真切的听到放电声。PD-LSGS配套的耳机可以保证在嘈杂的检测环境下具备最大的灵敏度。有时被测的电气设备会产生类似于PD的高等级电气噪声并伴有瞬时脉冲，这时PD-LSGS配套的软件能识别典型的电气噪声并警告用户所记录的局放等级不是由PD源引起的。
PD-LSGS在超声波检测模式下，能探测任何表面局放，进而开始追踪，耳机可以再次被使用以确保最大的灵敏度。PD-LSGS在趋势模式下，屏幕以条形图绘出检测到的局放活动，并在最后突出显示该检测周期内所记录的最大局放等级。
一、特征利益：
- PD-LSGS是中高压电气设备局部放电检测的专业设备，手持式。
- PD-LSGS 手持式局放检测仪是一款具有双传感器的开关柜局放检测仪，具有TEV检测模式，超声波检测模式以及趋势模式。
- 快速、准确的进行电气设备绝缘状况的检测。
- PD-LSGS是瑞士LECOM集团根据电力和工业用户的需求设计的一款手持便携式，操作简单的局放检测仪器。英国工厂生产。
- PD-LSGS适用于对大量的高压开关柜和电力电缆进行初步检查，通常测试时间在5-10秒即可以完成
二、技术参数：
- TEV检测模式
传感器：电容性
测量范围：0—80dBmV
分辨率：1dB
精度：±1dB - 超声波检测模式
测量范围：-6dBuV至70dBμV
分辨率：1dB
精度：±1dB
传感器灵敏度：-65dB（0dB=1volt/μbar RMS SPL）
传感器中心频率：40KHz - 操作温度：-5℃至55℃
湿度：0—99%RH - 硬件：注塑外壳，OLED显示屏，防水防尘按键
硬件接口：电源，耳机，外接声波天线 - IP保护：54
- 尺寸：190*90*65mm
- 重量：300g
- 电源：内置充电锂电池，3.75V，2.2Ah
续航时间：约12小时
电池充电：90-264V AC，5V，2.6A
频率：47-63Hz
充电时间：2小时
Handheld Switchgear PD
Detector
About the
PD-LSGS
PD-LSGS has the following key
features:
- Measurement of TEV signals generated by internal PD
- Ultrasonic detection of surface PD activity
- Integrated Noise Detection Algorithm helps avoid ‘False Positives’
- Level Mode and Trend Mode
- Audible output through headphones or built in speaker
TEV – PD
Detection
Partial discharge activity inside metal clad high
voltage plant induces small voltage impulses called Transient Earth Voltages on
the surface of the metal panels. TEVs travel around the surface to the outside
of the switchgear, where they can be picked up externally using the PD-LSGS
detector.
AE – PD
Detection
Defects on the surface of high voltage insulators
are prone to a phenomenon known as surface tracking. Tracking causes carbon
deposits that build up over time, ultimately leading to flashover and insulation
failure. The PD-LSGS is highly sensitive to the ultrasonic emissions produced by
tracking and enable the on-set to be detected before insulation
failure.
The PD-LSGS is a dual transducer PD detector for Switchgear. The instrument detects TEV signals generated by internal discharge as well as acoustic discharge generated by surface tracking or corona.
Advantages of
the PD-LSGS
- Rapidly survey whole substation – detects MV and HV problems before they occur
- Personnel Safety Device – ensure the substation is clear of PD before conducting work
- Hear the PD – only instrument available that allows the user to hear both ultrasonic and TEV PD activity
- Ergonomic and compact design – fits in the user’s pocket and is easy to use
- Long lasting battery – allowing a whole day of testing without requiring a recharge
What’s in the box?
- PD-LSGS
- Headphones
- Mains charger
- Function Tester
- USB/Car Charger
- Hard wearing PELI™ case
Detailed
Specifications
1. TEV Measurements
- Sensor Capacitive
- Measurement Range 0 to 80 dBmV
- Resolution 1 dB
- Accuracy ±1 dB
2. Ultrasonic Measurements
- Measurement Range -6dBuV to + 70dBµV
- Resolution 1 dB
- Accuracy ±1 dB
- Transducer Sensitivity -65dB (0dB = 1volt/µbar RMS SPL)
- Transducer centre frequency 40 kHz
3. Hardware
- Enclosure Injection moulded plastic case
- Screen OLED with level LEDs
- Control Membrane keypad
- Connectors Power, Headphones and External Acoustic Sensor
4. Environmental
- Operating Temp -5°C to 55°C
- Humidity 0 to 90% RH non-condensing
- IP Rating 54
5. Dimensions
- Size 190 x 90 x 65
- Weight 300g
6. Power
- Internal Battery Lithium Ion, 3.75V, 2.2Ah
- Operating Time Approx. 12 hours
7. Battery Charger
- Rated Voltage 90 to 264 V AC, 5V, 2.6A
- Frequency 47 to 63Hz
- Charge time 2
hours