Notícias

Guia do testador MPPT solar: Teste de painéis fotovoltaicos de 2000 W
As photovoltaic (PV) modules become more powerful and solar installations grow in complexity, accurate on-site performance testing is increasingly important for installers, EPC contractors, and operation and maintenance (O&M) teams.

Resolução de problemas relacionados com tensões fantasmas e interferências de variadores de frequência (VFD): Como os modos LoZ e LPF lhe poupam tempo
A digital multimeter can show voltage on a disconnected conductor, even when that wire is not connected to an energized source. And when you measure a variable frequency drive (VFD),

O equipamento desliga-se ao arrancar? Como medir com precisão a corrente de arranque
A motor starts, the lights flicker, and the circuit breaker trips—even though the equipment’s running current looks normal. For HVAC technicians and industrial maintenance teams, this can be a frustrating

Como escolher o medidor MPPT adequado para testar os painéis solares do seu sistema fotovoltaico
Choosing a solar panel tester starts with three electrical limits: power, voltage and current. All three must suit the module or circuit you intend to test. A higher wattage figure

Resolução de problemas em painéis solares com um medidor MPPT: 7 problemas comuns em sistemas fotovoltaicos e respetivas soluções
A solar panel producing less power than expected is not necessarily faulty. Changing sunlight, high cell temperature, shading and dirty surfaces can all reduce output. Loose connections or internal module

Medidor MPPT para teste de painéis solares: Como testar a potência de saída real de um painel solar
A solar panel can show a normal voltage reading and still deliver less power than expected. For anyone checking a new module, comparing existing panels or investigating low output, voltage

How to Measure Battery Voltage with HK78M Digital Automotive Multimeter
Battery voltage measurement is one of the quickest methods for evaluating battery charge condition and identifying potential electrical issues. Before performing more advanced diagnostics, such as charging system analysis or

How to Choose the Right High Voltage Clamp Meter for Electrical & Solar Applications
In modern electrical systems, especially in solar PV installations, industrial maintenance, EV charging infrastructure, and commercial power distribution, standard multimeters are no longer enough. Technicians today need a tool that

Leakage Current Clamp Meter: An Essential Tool for Electrical Safety Testing
In modern electrical systems, safety is not only about overload protection and circuit breakers. One of the most overlooked but critical risks is leakage current. Even a small leakage current

HK888B vs HK888E Solar PV Clamp Meter: What’s the Real Difference?
What Is a PV Clamp Meter? A PV clamp meter — short for photovoltaic clamp meter — is a specialized electrical measurement instrument designed for solar energy systems. Unlike a

CAT III vs CAT IV: Que classificação de segurança do multímetro precisa?
When choosing a digital multimeter, understanding CAT III vs CAT IV safety ratings is critical. These categories define how well a meter can withstand voltage spikes (transients) in different electrical

How to Test Solar Panels with Clamp Meter
Introduction Testing solar panels accurately is essential for maintaining system performance and ensuring operational safety. For installers working under time pressure, efficiency and reliability are critical. A PV clamp meter
