American Micronic Instruments

Online Uninterruptible Power Supply

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Series	ENS3
UPS Type	True Online 3 Phase
Power Range	10 KVA to 20 KVA

Features

	Sinewave Pulse Width Modulation (SPWM)
	IGBT inverter design
	Double conversion on-line system
	Microprocessor control
	Smart RS-232 communication port
	SNMP management capability
	Wide Input Voltage Windows (+/- 25%)
	Pure sinewave output less than 3% THD
	Versatile, modular design
	Expandable battery run time
	Generator compatible
	Cold Start (DC power on)
	Load/Battery power meter display
	Overload, on-line, battery status LED
	Advanced Battery Management (ABM)
	Automatically charging in UPS off mode
	20 KHz SPWM high frequency inverter.

Product Specifications

Model	ENS3-10KS31		ENS3-10S31	ENS3-20KS31
Power Range	10KVA/8KW		15KVA/12KW	20KVA/16W
Input
Voltage, Phase	220V/380V, 120v/208v(2 § 4W), 220V/220V(3 § 3W)
Frequency	50/60 HZ +/- 5%
DC Voltage	192Vdc			360Vdc
Output
Voltage	(+/-5% adjustable) 220V, 230V, 240V 1 § 2W or 110V/220V, 115V/230V, 120V/240V 1 § 3W
Voltage Regulation	+/- 1%
Frequency	50 or 60Hz
Frequency Stability	+/- 0.5%
Efficiency	Whole 84%
	Inverter: 90%
Total Harmonic Distortion	Less than 3% at linear load
Power Factor	0.8 ~ 1.0 Lagging
Slew Rate	<1Hz/Sec
Overload Detection	125% to 150% for 20 seconds
	150% for 10 cycle
Crest Factor	3:1
Inverter Operation	SPWM (Sinewave pulse wih modulation)
Transient Response	+/- 4% for 100% instantaneous load variation
	Recovery to +- 1% of rated voltage within 2 ms
Transfer
Power Failure and Recovery	0 ms
Overload disappear	Auto transfer to UPS
Bypass	Uninterrupted transfer of 100% load from UPS to bypass and vice versa
Alarm
Battery Discharge	The first warning will every 4 seconds to indicate battery in use. The second warning will beep every 1 second to signal battery low condition.
UPS Fault	Continuos beeping sound
Efficiency
Whole	>84%
Inverter	>90%
Environment
Operating Temprature	0°C to 40°C
Relative Humidity	0% ~ 95% (Non condensing)
Noise Level	<60dB at 1 meter distance
Battery
Back-up time	6-30 minutes (depending on computer load)
Type	Sealed Maintenance Free
Protection	Cut off without draining any current when battery low
Recharge Time	About 8 hours to 90 % after fully discharged
Mechanical (Without Battery)
Dimensions (WxDxH)mm	350x640x970
Weight (Kg)	160	175		215
Other Options
Interface	Supporst both RS-232 & dry contact signal to provide power management & dignostic functions including power status, battery low, schedule UPS ON/OFF, battery/load level display and more. Compatible with Windows NT, Novell, AS-400 and SNMP.