Leakage Current Monitoring: MLCM
Our MLCM is a lightweight, cost-effective, and portable solution that comes in handy to monitor the healthiness of the lightning arrester. MLCM measures the fundamental and third harmonic leakage current down to microampere.
Our MLCM is a lightweight, cost-effective, and portable solution that comes in handy to monitor the healthiness of the lightning arrester. MLCM measures the fundamental and third harmonic leakage current down to microampere. This makes it easy for the maintenance engineer to check and monitor in-service lightning arresters periodically and determine their healthiness. When the LA’s deteriorate, the third harmonic leakage current also increases which provides a clear indication for the maintenance engineer to take immediate actions.
Application
A lightning arrester is connected between high-voltage terminals and ground terminals for the protection of the equipment at the substations against traveling waves i.e., in parallel with the equipment to be protected at the substation. In other words, when a lightning surge (or switching surge) travels along the power line to the arrester, the current from the surge is diverted through the arrester, in most cases, to the earth without affecting the continuity of supply.
Lightning arresters at substations are exposed to a variety of stress factors originating both from the network and from their service environment. These stressors can cause premature aging or even damage to their varistor blocks. The main types of such degradation can be classified as either:
- Degradation of insulation properties
- Degradation of protective characteristics
Even though they are not a very costly device, their maintenance is very critical because they protect substation essential assets. It is a necessity that these LA’s are periodically monitored to ensure all essential assets are protected. There are various methods as per IEC 60099-5 to monitor the LAs. It is very simple and easier to monitor the in-service lightning arrester without dismantling it by measuring the 3rd harmonic leakage current using B1 and B2 methods.
Main Application
Used to check the healthiness of lightning arresters
Used to measure the leakage currents
Features
Simultaneous display of fundamental, three harmonic
leakage current, and resistive 3rd harmonic leakage current
Highly immune to noise in the system
Direct data transfer to your smartphone
Android app to monitor your LA trend
Export report to excel / graphical pdf format directly from the app
User friendly, rugged, and very lightweight
Simultaneous display of fundamental, three harmonic
leakage current, and resistive 3rd harmonic leakage current
Highly immune to noise in the system
Direct data transfer to your smartphone
Android app to monitor your LA trend
Export report to excel / graphical pdf format directly from the app
User friendly, rugged, and very lightweight
POWER:
Rechargeable Li-ion batteries that can be charged with a 9v charger
RANGE:
1uA to 30mA total and 3rd harmonic resistive current (B1 Variant),
1uA TO 30 mA – resistive current after compensation of capacitive current,
temperature and voltage coefficients (B2 Variant).
Continuous update of display and app every second without processing delays.
ACCURACY:
+/- 5 % , +/- 5 least counts
VARIANT’S:
IEC 60099-5 B1, B1& B2
SOFTWARE:
Android app to download test data and to monitor the trend of LAs.
CLAMP DIAMETER:
20mm/40mm/68mm
CORRECTION Factor:
Temperature and voltage correction for B1 and B2 variants. System 3rd harmonic compensation as per B2.
Calibration:
Inbuilt calibration of both B1&B2.
TEMPERATURE:
Storage: -20 to 70 C,
Operating: -10 to 50 C
DIMENSIONS in mm: 95 x 175 x 40
WEIGHT:
MLCM UNIT: less than 2kg
Standard Accessories
1 No. Leakage current monitor unit MLCM
1 No. 20mm/40mm/68mm high sense current probe.
1 set hook stick, base plate, cables for B2 method.
1 No. Smartphone(Optional).
1 No. Android app
1 No. Charger for MLCM
2 No. Battery for MLCM
1 No. USB cables and smartphone charger.
1 No. Operating and instruction manual
Our Customers
Motwane’s customer base is a testament to its ongoing ability to provide reliable, accurate, and long-lasting products, resulting in enduring relationships that are based on mutual satisfaction, loyalty, and trust.
Contact Us
Start your journey with Motwane
It’s easy to switch to Motwane. Our specialists take care of all conceivable requirements your project may have. With over a 100 years of experience in delivering world-class projects, Motware is the right choice.
Enquire NowBook a demo
⨯