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2.2.  Advanced Technical Characteristics 

 

Chapter 2.  Product Introduction 

 

z

  Innovative light weight and compact design for modern OA environment and 

OEM flexibility. 

z

  Powerful CPU integrates all power stages, control and communication 

functions for maximum UPS performance; Including Power management 
status monitoring, configuration setting, operation Scheduling, remote control 
and self-diagnostic capability. 

2.1. General Characteristics 
 

 

True online, Double Conversion architecture continuously supplies to your 
critical device with a stable, regulated, transient-free pure sine-wave AC 
Power. 

z

  Advanced digital communication capability allows full function remote control 

from any computer environment via standard RS-232 interface using 
Megatec’s RUPSII protocol. 

 

50KHz PWM sine-wave topology yields an excellent overall performance. 

z

 State-of-the-Art 

IGBT 

Technology ensures highest efficiency and reliability 

under worst operating condition. 

 

The high crest factor of the inverter handles all high-inrush current loads 
without a need to upgrade the power rating.   

z

  Industry leading Inverter protection technology incorporates 2-stage output 

Current sensor, smart overload output current control, improved crest factor, 
and feedback failure proof circuit, elevating the availability of power service. 

 

To protect the unit from overloading, the UPS will automatically switch to 
bypass mode when the connected loads exceeds 120% of rating.    It will 
automatically switch back to inverter mode once overload condition ceases.   

z

  Guarantees an exclusive protection against DC damage for inductive load, 

Such as motor based devices, allowing wide range of different applications. 

 

Should the output becomes short-circuited, the UPS holds the system with 
current limits and supplies to the output automatically till the short circuit 
situation is cleared. 

z

  Advanced Input Power Factor Correction (PFC) capability    guarantees near 

unity PF for maximum energy efficiency 

 

Should the unit become overheated, the internal thermistor will detect 
the over temperature and switches to bypass mode and returns to Inverter 
mode when the temperature returns to normal . 

z

  Unique electronic over-current protection detects output short-circuit and faults, 

and halts output before damaging to output fuse or equipment, minimizing the 
need for service. 

 

Maintenance-free sealed-type battery minimizes after-sales service.   

z

  Wide input voltage working range minimizes battery usage and enhances 

battery life. 

   

 

z

  Automatic Frequency Sensor enables automatic synchronization during 

frequency shift.   

z

  DC-start function ensures possible start-up of UPS during power outages. 

z

  Self-diagnostics function ensures UPS reliability and availability. 

z

  Built-in supplementary charger enables speediest charging of external battery 

Bank. 

z

  Optional SNMP adapter provides possible solution to achieve direct power 

management via internet protocol. 

 
 
 
 
 
 

 

 

5

Summary of Contents for Mini-J RT series

Page 1: ...stallation 14 4 3 2 Rack Mount installation 16 4 4 Operation Test 18 4 5 Storage Instruction 19 4 6 SNMP Slot 19 4 7 Replacing the Battery 20 Chapter 5 UPS Working Principle 22 5 1 When Utility is Normal 22 5 2 When Utility is Abnormal 22 5 3 Overload Condition 23 5 4 Inverter Failure 24 5 4 1 Output short circuit under inverter mode 24 5 4 2 Output Short circuit under bypass Mode 24 5 5 Inverter ...

Page 2: ...uit Current The Following Precaution Should be Observed When Working on Batteries Make sure that the AC Utility outlet is correctly grounded Do not try to repair the unit yourself contact your local supplier or your warranty will be void A Remove watches rings or other metal objects B Use tools with insulated handles Please make sure that the input voltage of the UPS matches the supply voltage C W...

Page 3: ...utomatically switch to bypass mode when the connected loads exceeds 120 of rating It will automatically switch back to inverter mode once overload condition ceases z Guarantees an exclusive protection against DC damage for inductive load Such as motor based devices allowing wide range of different applications Should the output becomes short circuited the UPS holds the system with current limits a...

Page 4: ...required To press the button over 5 seconds the UPS will be switched to Bypass mode and vice versa c To illustrate the percentage of output load level at AC Mode and the battery energy level at Backup Mode 4 Fault LED Red LED lights up if UPS is faulty 5 Bypass LED Amber LED lights up when UPS is in Bypass mode 6 Utility LED a AC normal Green LED lights up b 100 for load battery level 7 Inverter L...

Page 5: ...e installation This is to be plugged by the devices to be protected by the UPS Socket type 1Kva 2Kva 3Kva NEMA 5 15R 4pcs 2pcs N A NEMA 5 20R N A 2pcs N A NEMA L5 30 N A N A 1pce AC Outlet For 120Vac System Terminal Block N A N A Yes Socket Type 1Kva 2Kva 3Kva IEC 3pcs 3pcs N A Local Sockets 1pce 2pcs 2pcs 4 For 230Vac System Terminal Block N A N A Yes 5 SNMP Slot It is an optional feature used fo...

Page 6: ...tware kit The bundled software of the UPS is for Windows environment such as Windows 3 1 Windows 95 98 Windows NT For other applications such as Novell NetWare Unix etc please contact your local distributor for appropriate solution 3 3 1 RS232 interface settings The RS232 interface is to be configured as follows Baud Rate 2400 bps Data Length 8 bits Stop Bit 1 bit Parity None 3 3 2 Pin Assignments...

Page 7: ...m 2 Remove the packing materials Note The UPS module is approx 12 5 39 kgs be cautious when unpacking and lifting the unit to avoid injury 2 Do not block the air flow to the ventilation openings of the unit 3 Standard Package includes a User s Manual b AC Input Power Cord Not available for hard wiring connection models c IEC output cables for the UPS with IEC sockets only d RJ11 Phone Jack Cable e...

Page 8: ...Use with extended battery bank 4 3 Installation Instructions Step 1 4 3 1 Tower installation Stand alone unit Step 1 Step 2 15 Step 2 14 ...

Page 9: ...Step 4 4 3 2 Rack Mount installation Step 1 Step 2 Step 3 Step 5 17 16 ...

Page 10: ... then the Utility LED and Inverter LED will light up simultaneously 5 Simulate a Mains failure by disconnecting the input power cord of the UPS to see whether the UPS remains operation DC Mode when Utility is absent The Utility LED should extinguish and the alarm will sound continuously till battery cut off The UPS should continue to provide power supply at its output terminals To mute the audible...

Page 11: ...Step 2 4 7 Replacing the Battery Step 1 Step 3 Step 4 20 21 ...

Page 12: ... abnormal condition is illustrated as follows O P OUTPUT 4 1 RECTIFIER O P OUTPUT 4 2 23 During a blackout the UPS will work as illustrated in figure 4 2 When Battery is low buzzer will beep continuously till battery is completely cut off The battery low protection of the UPS will cut off battery supply after a preset threshold to avoid the battery from over drain The Inverter LED and Bat Low LED ...

Page 13: ...Output Voltage Out of tolerance If the UPS inverter delivers over current and out of tolerance voltage to its output the UPS is out of order The UPS will switch to bypass mode when Utility is normal The Utility LED Bypass LED and Fault LED will light up If these two conditions occur when Utility is abnormal the UPS will turn off the Output and the Fault LED will light up O P OUTPUT 4 4 25 2 Troubl...

Page 14: ...ging capability test 27 Bun ftwa allation allation 1 Connect the male connector of RUPS II cable 2 Connect the female connector of RUPS II cabl rt If there is only a DB25 connector of the RS232 p DB9 DB25 adapter to convert it 7 2 Software Installation tallatio A RUPS II for MS DOS 1 Insert the system diskett sk execute INSTALL EXE u A CD DOS Enter TALL 2 Please select the MS DO t 3 And create the...

Page 15: ...1 Login the File Server as a SUPERVISOR or a USER with Access Right sub directory SYS SYSTEM F LOGIN SUPERVISOR mv linux z linux Z or mv LINUX Z linux Z chmod 755 install 2 Insert the system diskette into the floppy disk Driver A or you drive 4 Execute the installation program install Select a targ 5 sure no other process using the sam lau UPSilon for Unix daemon p nch the 3 Execute INSTALL EXE in...

Page 16: ...uit a Inv UPS shut nd Cut the O b ode ks do Mode Bypass M down a AC Input fuse Brea utput wn Overheat a Utility Normal Switch to Bypass sounds continuously cut the output b Utility Abnormal Buzzer t LED lights up then Faul H ode igh Voltage ff Trip O Switch to Backup M Battery Low Alarm continuously till battery cutoff Noise Suppression Comply with EN50091 2 Spike Suppression N6100 Comply with E 0...

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