Re: [RE-wrenches] DC Solenoid Coil Current

2014-02-14 Thread Larry Crutcher, Starlight Solar Power Systems
...600 Watt HOURS per day…. It must be active 24/7. If deactivated, the battery is disconnected. Thanks but this is irrelevant now since I found a 500 amp solenoid that only consumes 41 WH per day. Larry On Feb 13, 2014, at 4:33 PM, Jerry Shafer wrote: OK So if you only have the 600 watts p

Re: [RE-wrenches] DC Solenoid Coil Current

2014-02-13 Thread Jerry Shafer
OK So if you only have the 600 watts per day when you are either on shore power or on a genny can you design the system to not be needed when they are off and kill that load Jerry On Feb 13, 2014 11:51 AM, "Larry Crutcher, Starlight Solar Power Systems" < la...@starlightsolar.com> wrote: > Hi Jerr

Re: [RE-wrenches] DC Solenoid Coil Current

2014-02-13 Thread Larry Crutcher, Starlight Solar Power Systems
Hi Jerry, The no-fault condition from the CPU is +12Vdc. A fault causes 0 volts. These are the contactors I plan to use: http://www.alliedelec.com/search/productdetail.aspx?SKU=70062412 Larry On Feb 13, 2014, at 12:38 PM, Jerry Shafer wrote: So Ian clear does the fault activate the relay

Re: [RE-wrenches] DC Solenoid Coil Current

2014-02-13 Thread Jerry Shafer
So Ian clear does the fault activate the relay or does the absence of the fault activate the relay because its usually best to have a absent or no fault hold the relay on and if anything fails as a the relay will rest this can be done with motorized on or contactor high load switch, you should also

Re: [RE-wrenches] DC Solenoid Coil Current

2014-02-12 Thread Larry Crutcher, Starlight Solar Power Systems
Pure genius, Dan. Exactly what I needed. You are truly an asset to the Wrench board. Thanks Frank for the tip on the MOSFET. Good to hear from you. Thank you, Larry Crutcher On Feb 11, 2014, at 6:16 PM, Exeltech wrote: Larry, A latching relay isn't suitable for fail-safe applications. L

Re: [RE-wrenches] DC Solenoid Coil Current

2014-02-11 Thread frank
Depending on load current. You may want to consider using a low on resistance N mos fet as the switching element. There is almost no stand operating current. Frank Lewon On 2/11/2014 6:43 PM, Larry Crutcher, Starlight Solar Power Systems wrote: Hello Wrenches, We're preparing to offer Lithiu

Re: [RE-wrenches] DC Solenoid Coil Current

2014-02-11 Thread Exeltech
Larry, A latching relay isn't suitable for fail-safe applications. Look into the "Kilovac Czonka III EV200HAANA". This series has a coil "economizer" that reduces coil current (and thus power consumption) after pull-in. Rated coil power is less than 2 watts. Models are good to 900Vdc and u