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What is the duty cycle and expected lifetime of the relays on the RLY-8?

Unread postPosted:Tue May 21, 2019 6:17 pm
by iragrollman
We are using 6 of the RLY-8 in a prototype industrial control application. Occasionally, we must cycle the relays on/off at approximately 1 second intervals for up to an hour (~1800 on/off cycles in an hour). This can occur up to 6 times per 24 hour period.

Can you supply the duty cycle and expected contact closure/open lifetime based on switching 110 VAC at about 0.25 amp? Alternatively, please respond with the part number of the relay and we can do the necessary research.

Regards, Ira Grollman

Re: What is the duty cycle and expected lifetime of the relays on the RLY-8?

Unread postPosted:Wed May 22, 2019 10:11 am
by nana.wang
iragrollman wrote:
Tue May 21, 2019 6:17 pm
We are using 6 of the RLY-8 in a prototype industrial control application. Occasionally, we must cycle the relays on/off at approximately 1 second intervals for up to an hour (~1800 on/off cycles in an hour). This can occur up to 6 times per 24 hour period.

Can you supply the duty cycle and expected contact closure/open lifetime based on switching 110 VAC at about 0.25 amp? Alternatively, please respond with the part number of the relay and we can do the necessary research.

Regards, Ira Grollman


Hi, thanks for your support.
After checking this in the datasheet http://cn.hongfa.com:8080/pdfjs/web/vie ... cqq_aiomsg we got data as below.
1. Its mechanical endurance is 10 million times.
2. RLY-8 is belongs to type Z, when its empty the electrical endurance is 50 thousand times. In the enviroment of 5A and 250V AC, resistive load and normal temperature 25°C, testing with 3s connected and 3s disconnects.
Due to the document is in Chinese, the key factors are remarked in the image1.

Re: What is the duty cycle and expected lifetime of the relays on the RLY-8?

Unread postPosted:Fri May 24, 2019 1:24 pm
by iragrollman
Thanks! We will verify this data as the installed base uses the device and provide feedback based on actual performance.

Re: What is the duty cycle and expected lifetime of the relays on the RLY-8?

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by tafep67142
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