Tödliche Steckdose? Der Test des Testers!

Zerobrain

22 Jan 202419:24

Summary

TLDRIn this informative video, the presenter explores the potential dangers of incorrectly wired electrical outlets, which can be hazardous or even fatal. The focus is on demonstrating how to easily and affordably identify such dangers using simple tools like a Duspol and a low-cost socket tester equipped with voltage indication and RCD (Residual Current Device) testing capabilities. Despite not being sponsored by any brand, the presenter reviews a specific tester, highlighting its functions, effectiveness in detecting wiring errors, and the importance of conducting a basic safety check. The video also humorously touches on a sponsored segment, emphasizing the importance of data recovery software, before delving into the technical analysis and disassembly of the socket tester to understand its workings and validate its utility in ensuring electrical safety.

Takeaways

😀 The video is about testing electrical outlets for safety issues using a simple tester device
🔌 The presenter wired the outlet incorrectly to demonstrate how the tester works
⚡️ The tester has LED lights that indicate if wiring is correct, reversed, or disconnected
🤓 The presenter analyzed the circuit inside the tester to explain how it functions
🔬 There is a constant current source to light the LEDs indicating issues
🔌 Diodes route current to light the proper LEDs for different wiring faults
⚠️ The most dangerous case is if live and ground wires are reversed
📝 All LEDs light up if live and ground are reversed and ground is disconnected
🔌 The device also has an RCD (residual-current device) test button
🛠 Overall it's a useful inexpensive way to do a first check for outlet wiring safety

Q & A

What is the purpose of the device being analyzed in the video?
-It is a socket tester with integrated voltage indicator and RCD (residual current device) test, designed to quickly and easily check sockets for basic wiring faults.
What key components does the device contain?
-It contains transistors, diodes, resistors, an LCD display, fuses, capacitors, and a microprocessor chip.
What safety feature does the device have?
-It has a built-in fuse connected to the line input for basic protection.
How does the device detect line and neutral being reversed?
-By using diodes and transistors to light up specific indicator LEDs based on the polarity and presence of line and neutral connections.
What does the RCD test section do?
-It tests that a residual current device / fault current interrupter is functioning by briefly connecting line and earth through resistors when the test button is pressed.
What is the purpose of the PTC component?
-It is likely to provide overcurrent protection for the RCD test section.
How are the LED indicator lights powered?
-Each has its own constant current source circuit to power it.
What wiring fault causes all 3 phase LEDs to light up?
-When line and earth connections are reversed, with earth not connected.
Why are resistors placed in series in the RCD test section?
-To limit fault currents and power dissipation as well as provide voltage withstand.
What critique does the video give of the device?
-It suggests having dual fuses to fully protect against all possible line/neutral/earth reversal combinations.