Rupert: Right on target you are. I was going to suggest the same thing to him, I was looking for the info about some thermal strips switches with current sensors to trip them, but up to now I have not been able to find the info and I may have thrown it out since I have limited storage space now.
Regards Nando ----- Original Message ----- From: "Evans Engineering" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, August 08, 2004 12:32 PM Subject: RE: [microhydro] suggestions required > Dear Manoj Pokhrel, > This problem of controlling consumer loads has come up many times over > the years since we supplied the first ELC to Nepal in 1982. Various > systems have been used including semi-conductor devices but most are too > expensive. A fuse probably won't work, because from my experience the > consumer sill simply wire it out if it's in the house. Placing the > control devices in a cluster at the top of a distribution pole makes it > more difficult to tamper with. By using a simple current rated > bi-metallic trip switch (that resets about five minutes after the load > switches off) is cheap at say R200 and encourages the customer to reduce > his load rather than 'punishing him' (less likely to result in conflict > because his lights have gone off). If you like the system I could make > some up for you to try. > Regards > Rupert > Evans Engineering UK > www.microhydro.com > > -----Original Message----- > From: Nando [mailto:[EMAIL PROTECTED] > Sent: 07 August 2004 14:16 > To: [EMAIL PROTECTED] > Subject: Re: [microhydro] suggestions required > > Manoj: > > Power control with such precision may require a small circuit to measure > the > voltage and the current to trip a TRIAC or a Relay to open for a few > moments. > > One problem would be the PFC of the load and by what you imply, it seems > that the load is going to be lighting and probably fluorescent lamps > that > should not have magnetics but electronic ballasts, also, they may not > have a > good PFC, just crest PFC -- please enlighten us about the lighting you > may > plan to implement there. > Also what other loads are going to be added ( like a battery charge > controller to have additional available power during the dark times ). > > Why don't you contact me directly -- to discuss your needs and the > possible > solutions > > Regards > > Nando > > ----- Original Message ----- > From: "MANOJ" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Wednesday, August 04, 2004 11:14 PM > Subject: [microhydro] suggestions required > > > > Dear all, > > I'd like to know about the cheap method to trip the > > current at required value...elaborating little bit > > detail,a community based micro hydro power plant of > > capacity 18 kW is going to be installed in the > > far-flung sector of Nepal....there are 180 > > beneficiaries' households....each household can not > > consume more than 100 watt.. i'd like to know about > > the provisions and instruments to control the current > > at exact value so that a household can not consume > > more than 100 watts. Effective suggestions for the > > same would be appreciated...... > > > > Regards, > > Manoj Pokhrel > > Nepal > > > > > > > > ===== > > Manoj Pokhrel > > Biratnagar, Kathmandu > > phone: 977-21-527467 > > > > > > > > __________________________________ > > Do you Yahoo!? > > Yahoo! Mail is new and improved - Check it out! > > http://promotions.yahoo.com/new_mail > > > > > > > > > > Does your company feature in the microhydro business directory at > http://microhydropower.net/directory ? If not, please register free of > charge and be exposed to the microhydro community world wide! > > > > NOTE: The advertisements in this email are added by Yahoogroups who > provides us with free email group services. The microhydro-group does > not > endorse products or support the advertisements in any way. > > > > More information on micro hydropower at http://microhydropower.net > > > > To unsubscribe: send empty message to > [EMAIL PROTECTED] > > Yahoo! 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