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Similaire à Elc Inverter Introduction
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Elc Inverter Introduction
- 1. Controlled Power Company Introduction to all new Model ELC
- 7. Utility Power Timed Normally Off Bus Active Model ELC Inverter Emergency Operation (Energized Normally Off Bus) Normally On Bus Active 277 volt 277 volt Off Bus Activation is Automatic via Loss of Inverter Input Power, or from Hardwired External Contact from Fire Alarm, Timers, etc. Or Manually via Wall Switches
- 8. Model ELC Inverter Field Programmable Off Bus Settings Unique Advantages Include: 3 Separate Dip Switches Positioned for Easy Front of Unit Access 1) Delay to Activate Normally Off Bus 2) Delay to Deactivate Normally Off Bus 3) Soft Start for High Inrush Off Bus Loads 1 2 3
- 10. Utility Power Normally Off Bus w/Time Delay & Soft Start Control Model ELC Inverter Emergency Operation (Soft Start Normally Off Bus Feature) Normally On Bus Active 277 volt 277 volt Off Bus Voltage Soft Start can be Adjusted to Accommodate High Inrush Current of Normally Off Emergency Lights. Exhaust Fan
- 11. Model ELC Inverter Zone Saver sense circuit monitors normal lighting circuit panels on each floor. Once Zone Saver senses the failure of the normal lighting circuit panel, emergency lighting is activated on that floor only. Zone Saver Zone Saver Sense Circuit Zone Saver Option
- 18. Inverter Performance Comparison Brand Model Input Voltage Range Output Voltage Range Output Voltage THD Isolated Output Crucial Power Products EconoSine +/-10% +/-4% 10% max. Opt.(External Xfrmr) Waverider +15/-20% +/-3% <5% THD yes Dual-Lite LSN +10/-15% +/-5% <5% THD Opt.(External Xfrmr) Synchron +/-10% +10/-5% <5% THD No Myers E & IE +10/-15% +/-2 to 12.5% <3% THD Optional – Input/Output Voltage Dependant CM +10/-15% +/-3% @<25% load step <3% THD None Stated DSPM / Powerclone DE +10/-15% +/-3 to 8% < 8% Yes 4.7KW and up Cobra mini +10/-15% +/-3 to 8% < 8% Opt. Internal Xfrmr. On Line Power Powerwave +10/-15% +/-3-5% 5% THD Yes CPC ELC +12/-30% typ <+/-2% <3% THD Yes ELU +12/-30% typ <+/-1.5% <3% THD Yes ELN +10/-40% typ <+/-3% <3% THD Yes ELE +10/-15% <+/-3% <3% THD Yes
Notes de l'éditeur
- Welcome to the all new Model ELC from Controlled Power Co. We’ll take a look at the prominent features which set this new addition to the CPC Inverter family, apart from anything else in its class in the industry
- First lets start with the basic features of this new Inverter… The key features of this offering, The ELC offers a true on line, double conversion topology (Note that kVA = KW in terms of rating and supporting of all types of lighting loads). This then allows it to deliver outstanding power quality solution characteristics! Plus as you’ll see, offering a lot of configurability through both controls and communications, as well as options and features.
- Most of you will recognize the traditional single line diagram of how the ELC and most other Double Conversion based inverters operate. The two primary keys to remember with the ELC are that 1) it is capable of supporting all types of lighting loads at full rated power, without the need for additional filters or controls. 2) It delivers regulated, spike-free sinewave to the critical load, thereby extending the life of electronic lighting loads like LED and “Energy Efficient” Fluorescent lighting.
- While the ELC offers up to 12 single pole output CB capabilities, notice how it is laid out, lending itself to a cleaner visual separation of (possibly Normally On or Normally Off) output CB’s. These 12 positions then could be used instead to provide up to six monitored output CB’s (monitoring Aux Contact occupies same amount of physical space as a CB does). Well take a closer look at the new Time Delay controls in just a moment.
- The ELC features an easy to use Inverter Bypass Switch that is clearly labeled and features a stiff action making it a deliberate effort to transfer to/from bypass mode. This switch is secure during normal operation by virtue of residing behind the lockable cabinet front door. This style of switch also eliminates confusion that can occur with multiple circuit breaker type switches.
- What we are seeing here is a typical Normally Off Bus type of design. The ELC also offers the traditional array of centralized control capabilities designers are increasingly taking advantage of, with functions like the Normally on or Normally off output CB capability, as well as the more unique Local Control capabilities using the Zone Saver boxes. The Model ELC, like its bigger brother the Model ELU, also offers a programmable Time Delay On/Off Bus action which allows the operator to delay the activation of the normally off output circuits and then also delaying retransfer once normal power has been restored. But the real exciting feature is the new Soft Start control. More on that in a moment…
- The basic configuration as you no doubt understand then, is to simply split the output into 2 groups: Normally On and Normally Off. In its simplest form the off bus turns on when utility power is lost. A more sophisticated scheme allows the designer to tie in external controls like fire alarms, or wall switches to activate the Off Bus. When using a time delay on/off control (as shown above), the first Time Delay setting allows user to program out nuisance short term light flicker/outages from activating the Off Bus, turning it on only in a true, longer Utility Outage condition. The second setting delays the retransfer function for up to 15 minutes if desired, to allow building power and the critical pathway’s lighting to stabilize, before returning to the Normally Off position. Also, like with the other CPC Inverters, is the ability to tie in external controls to turn the Off Bus circuits on/off but still override those controls in an emergency and bring the lights on at full power, regardless of external control settings.
- The ELC is the first Inverter on the market with this very unique field programmable feature, that is accessible via the front of the unit using simple dip switches versus a service tech control cable interface with a laptop (like most competing models would require). These three dipswitches on the ELC separately control 1) Time Delay to activate the off bus (range is 0 seconds to 10 seconds ). 2) Delay to return the normally off bus active mode of operation back to off/stand by mode (range is 0 seconds to 15 minutes ) 3) Soft Start function which allows High Inrush loads connected to the Off Bus circuits to be ramped on ( 16 cycles to 172 cycles , aka about 3 seconds). This soft start feature will prevent an inverter overload condition by controlling the inrush current of normally off emergency lighting loads, while then also expanding the opportunities for other non lighting, emergency loads like exhaust fans, exit door motors, etc.
- Here are the specific field programmable settings available and the factory default setting for each!
- Here we are showing emergency operation using the Time Delay Off Bus control function as well as the Soft Start feature that enables the higher inrush load (Exhaust Fan in this case) to turn on without adversely impacting output voltage of the inverter. Thereby maintaining optimum load voltage to all emergency lights at all times. As a technical point of clarification, this is indeed a Soft Start function where the inrush current is limited for up to 172 cycles or almost three seconds. Also important to note, is that this Soft Start function would be factory configured for the entire Off Bus output, all circuits connected. But most importantly think about how such High Inrush loading might otherwise cause a designer to have to oversize their inverter, in order to maintain proper system output voltage regulation!
- As you’ll perhaps recall, the Zone Saver provides the designer with the ability to control each zone separately and still override the local controls when either a single zone or central system loss of power occurs. The Model ELC (like the Models ELN, ELU and ELE Inverters) offer this capability. The Zone Saver resides in each zone and is wired in parallel with local control devices like a wall switch, dimmer, or even an occupancy sensor. Zone Saver overrides that local control, when an emergency occurs. All that is required for each Zone Saver is a single 20 amp, Normally On circuit from the Inverter. The Zone Saver sense circuit is wired to the local “normal power” panel feeding the non-emergency lighting in that zone. The Zone Saver and Local Controls do the rest.
- This Status and Control panel for the ELC offers a similar appearance to the standard panel on the ELU Series with indicators for incoming power presence, whether or not the inverter is in bypass mode, how heavily the ELC is currently being loaded, % Battery Time remaining, Check Battery indicator, and an Audible Alarm/Silence switch, as well as basic On/Off Soft Keys. But that’s just the beginning…
- While the ELC can certainly interface with typical remote annunciators, autodialers, fax modems and so on…it also includes a direct connection to the NetMinder option, mounted within the ELC cabinet. The NETMINDER allows the ELC to communicate directly with more contemporary Facility Management Systems like PowerLogic, Fanuc, Windows, etc.
- The ELC (like the ELU and ELE models) has the capability to automatically test the batteries, per NFPA standards. The memory capabilities of the ELC allow it to log the results of 13 battery test (one year’s worth = 12 monthly + 1 annual test), including date and time stamps. Remote notification of test results (pass/fail), alarms and status are available via SNMP, email, and network broadcast messaging. Note that automatic battery testing can be programmed for 30 or 90 Day intervals, as well as test duration times of 30 seconds (15 min bat) or 5 minutes (default for 90 min bat). Automatic testing includes one annual 90 minute test.
- The Model ELC also is available with the same Network Communications Adapters as the other CPC Inverter products. The CS121L provides SNMP, TCP/IP and MODBUS TCP network interface capabilities as well as Aux contact closure input signals. The CS121L-485 adapter offers these same features, except trading the contact closure inputs in exchange for being capable of communications via MODBUS TCP or RS485.
- As you can see from these pictures, the ELC’s communications bay resides in the top left area of the Inverter Cabinet. There is a field removable cover plate that sits on the top of the inverter housing. During installation, the installer will bring his communications cable(s) into the communications bay via one or more of the knockouts provided, and connect to the desired interface. That’s it for the installer. Competition has to land a cable to a port inside the inverter, then route that cable to an external PC someplace, load the software into that PC, then sift through a number of settings before communications can be achieved. The ELC NetMinder option includes monitoring software imbedded within the adapter itself, so no software is needed to monitor the inverter, no PC to set up, What could be easier?
- Dimensionally, the ELC Series is a true front access only cabinet design, where input/output conduits are routed via the unit’s top rather than the sides (although an installer could land his conduits from the side if they so desired). Comparatively as you can see, the others in the industry are close in size but many require additional side conduit access space…thereby making their net space requirement even bigger!
- Then last but not least, in terms of Power Quality and overall performance, the ELC remains on par with its bigger brothers in the CPC product family of Inverters, which by the way, also outclass the competition in terms of delivering spike-free, regulated power to critical emergency loads which now include electronics. Finally then just to qualify what we’re saying here in the last column, we’re defining Isolated output as a true, computer grade, sinewave that’s been recreated by either the inclusion of an Isolation transformer or true on-line, double conversion process. So in conclusion, as we’ve already discussed, this means superior more predictable lighting along the path of egress, for a significantly longer design life of the building.