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200W Aluminum Housed Wirewound Resistors For load bank, servo, automation,New energy vehicles

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Characteristics	Standards	Test methods
Resistance and Resistance tolerance	Resistance tolerance±5% (J)	/
Temperature coefficient	±300ppm	Test the resistance value at normal temperature and normal temperature added 100℃,calculate per℃ resistance value change rate .
Power rating load	△R/R≦± (1%＋0.05Ω) temperature 350℃ Max.	the power rating is applied to the resistor kept horizontally for 30 min.
Short-time overload	△R/R≦± (2%+0.05Ω)	At 10× rated voltage for 5 seconds.
Insulation resistance	≥1000MΩ	DC500V
Dielectric withstanding voltage	Without damage by flash-over, fire. or breakdown, etc.	≥AC2500V，60（sec.）
Vibration	no evidence of mechanical damage	Frequency：10~55Hz,Amplitude：1.5mm
Terminal strength	no evidence of mechanical damage	(Pull)：150N ， 30± 5 seconds
Resistor strength	no evidence of mechanical damage	250N，30± 5seconds
Heat resistance	△R/R≦± (1%+0.05Ω)	Immerge into 375±10℃ tin stove for 2~3 seconds.
Thermal shock	△R/R≦± (2%+0.05Ω)	Overload rated voltage or Max.working voltage (get the lower) for 1000 hours (1.5 hours on and half-hour off ) at the 40±2℃ and 90~95% relative humidity.
Power rating load	△R/R≦± (5%+0.05Ω)	Overload rated voltage or Max.working voltage (get the lower) for 1000 hours (1.5 hours on and half-hour off ) at the 40±2℃ and 90~95% relative humidity.
Load life in heat	△R/R≦± (5%+0.05Ω)	Overload rated voltage or Max.working voltage (get the lower ) for 1000 hours (1.5 hours on and half-hour off) at the 70±2℃.

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Q1. How is the quality of your products? A: We have more than 20 patented technologies and enjoy a high reputation in the industry. The production of smokeless ceramic tube resistors and chip resistors exceeds the industry level. Q2. How about MOQ? A: For trial orders, the MOQ is generally subject to the MPQ of our resistors, or it can be negotiated. Please contact us for more details. Q3. How long is the delivery time? A: Normally, 3-7 working days after receiving payment. For bulk orders, the delivery time can be negotiated. Q4. How do you ship? A: The goods can be shipped by UPS/DHL/TNT/EMS/FedEx/air or sea, even according to customer's request. For countries and regions that cannot be reached by EMS, please choose another shipping method. We are not responsible for any accidents, delays or other problems caused by the shipping agent. Any import fees or charges are the responsibility of the buyer. When an order or part of an order is shipped, an email will be sent with shipping details. Q5. How to pay? A: We accept Alibaba Trade Assurance; T/T; T/T/Western Union and PayPal etc. Other payment terms can also be negotiated. Under normal circumstances, we will not change the payment account midway, in this case, please confirm with our relevant personnel before arranging payment.