EEVblog Electronics Community Forum
Electronics => Beginners => Topic started by: Shubham on June 16, 2024, 09:55:27 pm
-
Hello everyone, I am designing a PCB for a three-phase system and considering using the http://www.xinyaelectronic.com/product/xy2500fa-50-xy2500fb-508 (http://www.xinyaelectronic.com/product/xy2500fa-50-xy2500fb-508) Xinya XY2500 4-pin pluggable terminal connector (pitch 5.08 mm, rated 15A @ 300V) to connect R (Phase 1), Y (Phase 2), B (Phase 3), and N (Neutral). My concerns are whether this connector can safely handle the voltage requirements:
1) Is the 300V rating sufficient for typical three-phase voltages, especially considering peak values?
2) Are the creepage and clearance distances provided by the 5.08mm pitch sufficient for safety and compliance with standards such as IEC and UL?
Additionally, if there are other factors I should consider or alternative connectors you recommend, I would greatly appreciate your insights. Thank you!
-
The Xinya XY2500 connector can be used for your three-phase system provided that the line-to-line voltage does not exceed 300V and the creepage and clearance distances are verified against the specific environmental conditions and standards.
-
It depends on the overvoltage category and system voltage, the humidity, the altitude. Will there be Cat. II or Cat. III overvoltage transients?
A connector can be rated to "300V" but no good once mounted on a PC board. You don't really achieve the spacings. The PCB connector can have 5.08mm pin spacing, but then you need to add the pad size and not forget the pin hole.
Example 5.08mm pin spacing, 2.5mm dia. pads w/1.5mm hole gives you 2.58mm spacing and only 0.5mm annular ring which is not much.
If the wires going in to the connector are poorly done - over-stripped, loose strand, it can arc there. Ferrules can help but are not always used.
For this reason, I go upsize to 7.5mm
Note there is no mention if the Xinya connector have UL/CSA approvals.