IEC60598-1 Clause 4.26 Figure 29 Uninsulated reverse polarity SELV component accidental short circuit protection test chain

Product Details

Product Description

Product Description
IEC60598-1 Clause 4.26 Figure 29 Uninsulated reverse polarity SELV component accidental short circuit protection test chain
1、Introduce
According to the requirement of IEC60598-1 clause 4.26 Figure 29. Used for accidental short circuit protection testing of SELV components that are not insulated and have opposite polarity that can be touched in lighting fixtures. The test chain is made of Cu63% and Zn37% uncoated metal.
2、Method of application:
The chain shall have a resistance value of 2.5 ± 20% Ω/m, and verify the resistance of the test chain before each measurement.
Measure the spatial distance between the two poles of the SELV component, denoted as X, in centimeters/cm.
Hang standard counterweights of 15 * X * g or 250g at both ends of the test chain.
Install thermocouples at appropriate locations on the tested sample and turn on the temperature monitoring device.
Connect the sample to a power supply of 0.9~1.1 times the rated voltage.
Place the test chain and conduct a short-circuit test.
Attention: Melting of the test chain may cause burns.
3、Attention:
The test chain is made of copper zinc alloy product, which has no coating on the surface and is prone to oxidation. Please pay attention to maintenance.
When the resistance fluctuates, ultrasonic cleaning or soaking in weak acid at a concentration of 0.5% can be used.
Excessive weight distribution can cause a decrease in wire diameter.

---

>> Waterproof 40X25X20cm Backpack with Durable Design and Stylish Multi-Pocket Layout
>> Automatic End Mill Sharpener for Professional Use, Compact Design, 350X230X240mm
>> USB 3.1 Type-C M. 2 Ngff SATA Hard Disk LED Light Metal Portable External USB Stick Hard Drive
>> Aspor Mini Size Speaker Input 5V Playing Time 4 Hours Black Color Speaker
>> High quality rear trunk lift gas spring for Proton Saga 2001-
>> LT942X electric piston flow and pressure regulator hollow injection plunger valve
>> 20L Agricultural Plastic PP PE Hand Manual Battery Electric 2 in 1 Knapsack Backpack High Pressure Power Pump Garden Farm Trigger Chargeable Portable Sprayer
>> 60 Station Low Pressure Polyurethane Pouring Machine for Sandal Slipper
>> Cheap Price 200mm Round Pipe Cutting Laser Machine for Sheets and Pipes 1530 1540 2060 with Exchange Table for Sale
>> Soybean Protein Drying Machine/Soybean Protein Dryer/Soybean Protein Desolventizing Equipment/Soybean Protein Drying Equipment
>> Popular Brushless 380 N. M Electric Cordless Li-ion Battery Power Impact Wrench
>> 2030c Woodwork Machinery Furniture Molding Wood German CNC Machines Other Woodworking Machinery
>> Chinese PTFE plate manufacturer
>> Sdlg 9t-E690f Chinese Crawler Excavator for Municipal Administration
>> Similar to 4380 High Temperature Resistant Masking Film for Car Painting
>> Pig Farm Feeding System Branches for Feeding Pipe
>> Customization Factory Price Aluminum Chainmail Ring Decorative Wire Mesh
>> Premium Frozen Diced Ginger - Affordable Bulk Supply for Resellers
>> D300mm Modern Hot Sale Ceiling Light 24W 2800K/4000K/6000K Adjustable Indoor Lighting IP40 Color Available
>> Ye2 160L-2 Series Asynchronous Three Phase AC Cast Iron Induction Electric Motor Wholesale Global Sources Asynchronous 1HP 2HP 3HP 5HP 7.5HP 10HP 15HP 20HP 25HP