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equipment damage.   

(2)Failure  to  follow  the  load  start-up  sequence  which  shall  begin  with 

heavy-duty  equipment  to  low-duty  ones.  Restart  UPS  and  wait  till  UPS 

runs  stably;  first  start  heavy-duty  equipment  and  then  devices  of  lower 

duties.   

Problem 5 

UPS  works  properly  after  start-up,  and  automatically  shuts  off  after  a  certain 

period of time.   

Cause: battery unit is not charged in time and is working under battery supply 

status  (not  powered  or  not  connected  to  power  grid),  thus  resulting  in  battery 

low-voltage protection of the UPS. 

Warning: in the case of UPS battery low-voltage protection, please immediately 

turn off all switches, and restart the UPS and charge the battery to full capacity 

when  power  supply  recovers.  Long-period  low-voltage  of  the  battery  will 

shorten the service life of the battery.   

Problem 6 

After  working  for  a  certain  period,  with  normal  input  display,  the  buzzer  gives 

intermittent  buzzing  and  displays  battery  low-voltage  simultaneously.  Cause: 

too-low  power  grid  voltage  makes  the  UPS  work  under  battery  feed  status. 

When  the  battery  runs  low  and  low-voltage  occurs,  it  enters  into  protection 

status. 

Problem 7 

UPS  is  started  and  working.  When  power  supply  breaks  down,  UPS  fails  to 

output power. 

Cause: the battery unit is not connected to main unit or is severely damaged. 

 

4.7

 Troubleshooting 

4.7.1

 Overview 

In the case of device failure, first of all, find out any obvious damage and try to 

determine  what  causes  the  failure:  device  problem  or  external  environment 

Summary of Contents for PS-P0U3KD 8B9K Series

Page 1: ......

Page 2: ...battery It s prohibited to touch any two of wire connectors or bare end of connecting wires Otherwise it may lead to damage of battery or personal injury 8 Please keep the battery away from the fire and all the equipment that may cause spark to prevent the danger and damage 9 Please do not open or shatter the battery the overflow electrolyte is with causticity that may be harmful to life 10 Please...

Page 3: ...d Environment Requirements 9 3 1 1 Site Requirements 9 3 1 2 Environment Requirements 9 3 2 Procedures of Dismantling Cases 10 3 3 Installation of UPS 10 3 4 Selection of Cable 11 3 4 1 Selection of Input Air Switch 11 3 4 2 Selection of Input and Output Power Cord Diameter 12 3 5 Cable Connection 13 3 5 13KVA 13 3 5 2 Inspection of Electric Connection 15 4 Equipment Use and Maintenance 16 4 1 Pre...

Page 4: ... Safety Precaution 19 4 6 2 Preventive and Regular Maintenance 19 4 6 3 FAQ 20 4 7 Troubleshooting 21 4 7 1 Overview 21 4 7 2 Troubleshooting 22 5 Packing Transportation and Storage 23 5 1 Packing 23 5 2 Transportation 23 5 3 Storage 23 ...

Page 5: ...ver enterprise erver central server microcomputer concentrator telecommunication system data center medical facilities and those requiring high quality power protection They can be widely used in many key business areas such as post telecom finance network securities and railway etc 3KVA UPS is single phase alternating current input and output ...

Page 6: ... seconds 135 150 Load lasting 30 seconds Output mode Sockets Other Characteristics Spare time 5 minutes PC LOAD Rational configuration for long time delay Charge recovery time 12 hours Standard time delay model Communication interface RS232 interface supports UPS power management software or SNMP protocol Panel display LCD and LED display operation status and function of UPS Warning function Batte...

Page 7: ...perational reliability and reducing manufacturing cost which lowers the cost of the system design for customers 4 Perfect protection function Possess such functions as output low voltage protection battery low voltage protection input low voltage protection and triple overflowing protection etc and overcome previous defects such as high frequency UPS poor adaptability and weak resistance to shock ...

Page 8: ...inal 8 High voltage endangering personal safety exists in the storage battery of this UPS Please pay attention to insulation during installation and use 9 Improper handling of acidic battery leads to leakage risk of chemistry dangerous substance and corrosive liquid 10 Dripping condensation should be happen if machine was operated under low temperature environment So please install and use machine...

Page 9: ...3 seconds to make the buzzer silent when start up the UPS under the battery mode if it need to display the history or return please press the select key for 3 seconds if it need to delete the history please press the select key on the history page or on the output display page when the backlight lights out for 6 seconds Line light Inverter light Bypass light Fault light LCD Display panel ON button...

Page 10: ...ial power input Panel Front For Gas Entry Panel Front For Gas Entry Display AC INPUT L N AC OUTPUT PE N L POWER OFF BATTERY ON Fan AC Input AC Output terminal Battery Breaker Mains Power Breaker AC Output sockets RS232 USB Communication interface Optional SIGNAL RS232 SNMP NetAgent Mini SNMP RS232 RS232 DRY CONTACT RS232 These communication interfaces are optional DC INPUT External battery connect...

Page 11: ... the charging of the battery When commercial power is abnormal the battery increases the voltage through DC DC to 390V DC voltage and supplies DC AC inverter UPS principle lock diagram is shown in Fig 2 4 DC AC inverter adopts half bridge structure while DC DC voltage increase adopts push pull or BOOST circuit PFC is active power factor correction circuit controlled by UC3854 while CHARGER is comp...

Page 12: ...RS232 serial ports of this series UPS and those of general PC are shown in Table 2 1 1 6 2 7 3 8 4 9 5 Fig 2 5 RS232 pins definitions Table 2 1 Corresponding relations of pins for the RS232 serial ports of this UPS and those of general PC Communication RS232 Interface for UPS General RS232 Interface 9 3 2 Receive 6 2 3 Deliver 7 5 5 Ground ...

Page 13: ...ation as stated in this section 1 The equipment room must be equipped with applicable and effective fire apparatus 2 The commercial power which supplies power for UPS should be equipped with dedicated air switch or utility socket 3 Strictly prohibit to store dangerous things such as inflammable things explosive things in the equipment room 4 Before equipment installation the ground wire should be ...

Page 14: ...al 4 User s Manual Copy 1 Enclosed in grip bag 5 Packing list Copy 1 Enclosed in grip bag 6 Warranty Card Copy 1 Enclosed in grip bag 7 Battery expansion line Piece 1 Standard time beckup model N A 3 3 Installation of UPS Because the main unit size of 3kVA standard time delay model and long time delay model is small the UPS can be placed on the flat surface directly without other fixing or install...

Page 15: ...t hole from being blocked No person is allowed to sit on it 3 4 Selection of Cable 3 4 1 Selection of Input Air Switch Before the input coil in of the equipment install an air switch or a distribution box compliant with the power and capability of the equipment to isolate it with commercial power Consider especially the charge power and the current shock the input air switch can be higher than 1 5...

Page 16: ...For the selection of conducting wire sectional area for UPS AC input and output cable and battery cable please refer to Table 3 3 for corresponding recommended values and choose values upwards Table 3 3 Recommended Sectional Flow of Cable Sectional Area of UPS Ampacity A Sectional Area mm 2 1 1 5 2 5 4 6 10 16 25 Rubber 25 C 8 12 20 28 42 70 96 125 Plastic 25 C 6 9 15 20 30 50 64 100 ...

Page 17: ... shown in Fig 3 3 AC INPUT L N AC OUTPUT PE N L POWER OFF BATTERY ON RS232 USB DC INPUT OUTPUT 120V 60Hz Each 15A Max OUTPUT 220V 60Hz Each 15A Max Socket output to load L N PE Three of them can not be rever sed the exposed part of each wire can not have contact with cabinet Terminal output to load Commercial power input Output socket load sharing Socket output to load Socket output to load Fig 3 ...

Page 18: ...m the right to the left rear view orderly to AC input are live wire L neutral wire N and ground wire PE After the connection please check up whether the wire of connection is correct and firm and then install the small cover board back to the box For long time delay UPS battery input expansion line is required to be connected That is insert the battery connection wire two core plug of the battery ...

Page 19: ...of AC output wire is firm 3 Inspection of ground wire Whether the ground wire of UPS is connected to the ground line bank of the equipment room Whether the connection of ground wire is reliable 4 The inspection of the voltage difference between neutral wire and ground wire the voltage difference should be less than 5Vac 5 If the customer adopts the configuration of long time delay model examine wh...

Page 20: ...e UPS output Loads are normally powered by electric network directly 4 2 UPS Start up Sequence After confirming all the above please start the machine by following means 1 Put the air switch at the back to ON position 2 Press the ON OFF button on the UPS panel to start UPS the INV indicator light will light up After retardation time the BYPASS light goes out and the UPS is changed inversion power ...

Page 21: ...this type of equipment before other equipment 4 4 Battery Daily Maintenance 1 If the equipment has not been used for a long period it should be charged for more than ten hours 2 Before operating the equipment please charge it for ten hours after start up The equipment can still be used during charging If power failure occurs at the same time this discharge time may be under standard value 3 Normal...

Page 22: ...r a long time regularly perform charging and discharging of battery to avoid battery damage due to self discharging 4 5 Battery Changing When changing storage battery pay attention to the following 1 Do not throw battery into fire to avoid explosion 2 Do not open or disassemble battery as the electrolyte is harmful to skin and eyes 3 Properly recycle the battery according to relevant instructions ...

Page 23: ...he safety operation procedure for granted If there is any doubt consult personnel who are familiar with the equipment 5 Be cautious that there is dangerous voltage in UPS Before maintenance and adjustment use voltmeter to check and ensure that the power is turned off and the equipment is under safe condition 4 6 2 Preventive and Regular Maintenance The following shows the preventive maintenance pr...

Page 24: ... for example zero line or fire wire is connected to UPS earth wire case or wrong connection of three UPS output wires Problem 3 After UPS is started it outputs AC 220V yet it s working under bypass status BYPASS keeping lighted Possible cause too heavy load sustained by the device which exceeds rated power of the UPS In such cases relieve the load to the UPS or use a UPS of higher rated power capa...

Page 25: ...rt the UPS and charge the battery to full capacity when power supply recovers Long period low voltage of the battery will shorten the service life of the battery Problem 6 After working for a certain period with normal input display the buzzer gives intermittent buzzing and displays battery low voltage simultaneously Cause too low power grid voltage makes the UPS work under battery feed status Whe...

Page 26: ...ard failure 4 UPS Over temperature protection 2 UPS works properly when power supply is O K but it fails to function during power failure Possible causes 1 Battery failure 2 Battery charger malfunction failing to charge battery when power supply is O K 3 Poor contact between battery connecting wires or connecting terminals 3 Intermittent buzzing of the buzzer when UPS input is normal Possible caus...

Page 27: ...packing carton to avoid damage to the devices 5 3 Storage The system equipment shall be stored in dry warehouse Do not expose it to insolation or rain Place it in the way as shown on the packing boxes Store it where the ambient temperature is between 25 55 except for battery It is recommended to store the standard device and battery at places with temperature between 0 40 and relative humidity bet...

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