It is currently Thu Mar 28, 2024 1:53 pm

All times are UTC






Post new topic Reply to topic  [ 25 posts ] 


Author Message
 Post subject: Re: Switching on Times
PostPosted: Fri Feb 05, 2016 6:51 pm 
Offline
Member
User avatar

Joined: Wed Jan 11, 2012 9:09 am
Posts: 97
Interesting topic! We have our Sangamo solar dial 54deg model controlling an ESLA on the front of our shed, but also separately switched by a SELC photocell on top of our nearby Simplex Diadem 125W MBFU. This means that in the depths of winter, the timeswitch takes precedence, and switches on after the photocell has decided it is dark, but the timeswitch is then also set to switch off at 11pm.

In the summer, the photocell tends to dominate, as the solar dial is switching at around 21.30 when it is still light - and so the photocell prevents the light coming on until the Lux level has dropped.

I'm tempted to source a Raspberry pi now...  :mrgreen:


Top
 Profile  
 
 Post subject: Re: Switching on Times
PostPosted: Sat Feb 20, 2016 8:57 pm 
Offline
Member
User avatar

Joined: Sat Jun 23, 2012 8:21 pm
Posts: 299
Images: 6
Lamplewie wrote:
My street is group switched from a central point, one of those SELC digital solar clocks. I think the switch time moves 2 minutes each night.


Hi Lampewie,

The solar clock on my shed appears to switch 2 mins each day.

Regards,

Andrew.


Top
 Profile  
 
 Post subject: Re: Switching on Times
PostPosted: Sat Feb 20, 2016 9:04 pm 
Offline
Member
User avatar

Joined: Sat Jun 23, 2012 8:21 pm
Posts: 299
Images: 6
Doive wrote:
Interesting topic! We have our Sangamo solar dial 54deg model controlling an ESLA on the front of our shed, but also separately switched by a SELC photocell on top of our nearby Simplex Diadem 125W MBFU. This means that in the depths of winter, the timeswitch takes precedence, and switches on after the photocell has decided it is dark, but the timeswitch is then also set to switch off at 11pm.

In the summer, the photocell tends to dominate, as the solar dial is switching at around 21.30 when it is still light - and so the photocell prevents the light coming on until the Lux level has dropped.

I'm tempted to source a Raspberry pi now...  :mrgreen:



Hi Doive,

Sounds like you have a nice setup there.

You should get a raspberry pi they are great and quite cheap. It would be quite interesting for you to take both switches into the unit and  Log the on/off times of both switches. You could gather the data for a year then plot the two switches against each other.

Regards,

Andrew.


Top
 Profile  
 
 Post subject: Re: Switching on Times
PostPosted: Fri Aug 31, 2018 7:25 pm 
Offline
Member
User avatar

Joined: Mon Nov 09, 2009 5:27 pm
Posts: 1814
Images: 200
I did a review of switching on times this evening.

19:43 - sun disappeared over the horizon
20:03 - Philips Lumas with CMS on motorway
20:08 - Urbis ZXU1s (2no.) (SON) with mincells
20:09 - Philips Libra (PL-L) with photocell
20:16 - Philips Libras (3no.) (PL-L) with photocells
20:17 - Philips Iridiums (SON) and Philips Libras (PL-L) on Hampshire Mayflower CMS

The ZXU1s are believed to be 70LUX switching, and represent what used to be a common switching on time for street lighting in years gone by before councils implemented trimming with lower LUX photocells and CMS. So, despite the motorway having LED (instant switch on) and a CMS, the lighting switched on 14 minutes before the Hampshire CMS which is switching discharge lighting, and is even switching on lighting 5 minutes earlier than "traditional" SON lighting.


Top
 Profile  Personal album 
 
 Post subject: Re: Switching on Times
PostPosted: Sun Sep 02, 2018 6:20 pm 
Offline
Site Administration
User avatar

Joined: Mon Nov 09, 2009 5:38 pm
Posts: 3402
Images: 27
Location: Salisbury
My village has some 70/100 Lux cells,  and others which are 55 Lux. The latter when used with SOX are just about right, however 55 Lux with SON is still too early.

As meppso, has mentioned, 35 and even 20 Lux cells are becoming more common. For the Lumas in my village, 55 Lux is still too early and one of the lower Lux cells would be a better match. In fact 35/20 would do for any light source other than SOX.


Top
 Profile  Personal album 
 

Display posts from previous:  Sort by  


Post new topic Reply to topic  [ 25 posts ] 

All times are UTC



You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  

Who is online

Users browsing this forum: No registered users and 31 guests



Search for:

cron