1. Delta Confidential DES UPS introduction UPS training June 2006 Markus Schwab

2. Delta Confidential Why Uninterruptible Power Supply (UPS)? Power Failure Backup Power Over Voltage Under Voltage Buck Voltage Boost Voltage Protection Surge Power Sag Noise Transient Variation Harmonic Adjust

3. Delta Confidential Different UPS architectures Off-Line (Passive Standby) Line-Interactive UPS Type On-Line (Double Conversion)

4. Delta Confidential Charger Utility Switch Load Off-Line UPS Battery Inverter Block Diagram Filter Utility is normal: UPS output is equal to utility but through noise filter Over or under voltage: Inverter transfers battery’s energy to provide load Inverter Output: Stepped sinewave Capacity: 350VA ~ 1500VA Normal Power event

5. Delta Confidential Off-Line UPS PC, Terminal peripherals Fax Machine Cashier Desk Lamp Application

6. Delta Confidential Block Diagram Line-Interactive UPS Battery Load Utility AVR Inverter Filter Utility is normal: UPS output is equal to utility but through noise filter Over or Under Voltage: AVR activates to adjust the utility Utility too high or two low: Inverter transfers battery’s energy to provide load Output: Pure Sinewave or Stepped Sinewave Capacity: 350VA ~ 3000VA Switch Normal Power event Normal charger

7. Delta Confidential Line-Interactive UPS High Level PC Workstation LAN Hub Application

8. Delta Confidential Block Diagram Load On-Line UPS Utility Battery Inverter AC to DC Filter Utility within operation range: UPS supplies clean, undisturbed power via inverter Utility too low or too high: Inverter transfers battery’s energy to provide load Output: Pure Sinewave Capacity: 1000VA ~ 200KVA Bypass Switch Normal Power event

9. Delta Confidential On-Line UPS IDC, Server RAID, MIS Facility Industrial Equipment Enterprise Application

10. Delta Confidential Comparison between different architectures Delta Energy Systems UPS product line

11. Delta Confidential Extended runtime Load Utility Battery Inverter AC to DC Filter Bypass Switch Battery External battery can be connected to extend backup time Available for whole DES product range features online UPS

12. Delta Confidential Bypass types Automatic bypass: In case of low battery or UPS fault the load will be transferred to bypass Available for whole DES product range Manual bypass: Manual switch to power output during maintenance of the UPS Built in for J 7-11kVA, H and NT series Inverter AC to DC Bypass Automatic Bypass Load Manual Bypass features online UPS

13. Delta Confidential Dual input The UPS can be connected to two separate AC sources to increase system reliability. Built in for J 7-11kVA and NT series (H series optional) Utility B Utility A Battery Inverter AC to DC Filter Bypass Switch features online UPS

14. Delta Confidential Hot standby Inverter AC to DC Bypass Switch Inverter AC to DC Bypass Switch One UPS output connects to another UPS’s bypass input source Two paths that provide loads backup protection -> increased reliability Possible with dual input UPS (J 7-11kVA and NT series, H series optional) Load features online UPS

15. Delta Confidential Parallel UPS Switch Parallel UPS to: extend capacity or provide N+1 redundancy Available for NT series UPS 1 UPS 2 UPS N+1 To loads features online UPS

16. Delta Confidential Economic Mode Load Battery Inverter AC to DC Filter Bypass normal Switch In ECO mode the load is powered by the bypass path Energy saving Some transfer time in case of mains failure (< 10ms) Available for J7-11kVA and H series single phase models features online UPS Utility

17. Delta Confidential © 2015年7月14日星期二 2015年7月14日星期二 2015年7月14日星期二 2015年7月14日星期二 2015年7月14日星期二 2015年7月14日星期二 Delta Energy Systems Clarification about EMC standards Generic UPS standardTelecom standard Old: EN50091 New: IEC62040 EN300386 B=C1=BJ 1-2kVA A=C2=AN series, J3-7-9-11kVA A (A + )=C3=---H and NT series A + / C3 :For UPS models > 16Amps ~10-20 dBs more are allowed in the generic UPS product standard. Does not exist in Telecom norm and did lead to confusion in the past Note: The term A + is not an official term, officially it is class A also, but for currents > 16Amps the limits are higher. Clarify requirements in the beginning of a project

18. Delta Confidential © 2015年7月14日星期二 2015年7月14日星期二 2015年7月14日星期二 2015年7月14日星期二 2015年7月14日星期二 2015年7月14日星期二 Delta Energy Systems Key design parameters for UPS project Load requirements- kVA / kW (kW = kVA x Power factor) - number of phases - voltage rating EMC requirements (UPS standards / Telecom standards) Required backup time Verify external transient protection (same as with other products, see ‘Generic installation manual for power systems’)

19. Delta Confidential Comparison UPS – Inverter system Advantages UPS: Large range of load power ratings available (1 – 800kVA) The UPS you can integrate into a network of IT equipment and: -use extensive monitoring features -perform sequential equipment shutdown in backup mode, etc. Advantages Inverter system: Redundancy can be built Can be powered from DC power system (mixed AC and DC system) Fulfils all telecom standards

20. Delta Confidential Thank You!