DES UPS introduction UPS training June 2006 Markus

DES UPS introduction UPS training June 2006 Markus Schwab Delta Confidential

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

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

Off-Line UPS Block Diagram Utility Normal Filter Power event Charger Battery Load Switch Inverter 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: 350 VA ~ 1500 VA Delta Confidential

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

Line-Interactive UPS Block Diagram Normal Utility Filter AVR Load Power event Battery Switch Inverter Normal charger 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 Delta Confidential Capacity: 350 VA ~ 3000 VA

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

On-Line UPS Block Diagram Bypass Normal Utility Load Filter AC to DC Inverter Battery Switch Power event 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: 1000 VA ~ 200 KVA Delta Confidential

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

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

Extended runtime es r u t a e f S P U e onlin Bypass Utility Load Filter AC to DC Inverter Switch Battery l External battery can be connected to extend backup time l Available for whole DES product range Delta Confidential

Bypass types Bypass AC to DC Inverter Automatic Bypass s e r u t a fe S P U e n onli Manual Bypass Load Automatic bypass: l In case of low battery or UPS fault the load will be transferred to bypass l Available for whole DES product range Manual bypass: l Manual switch to power output during maintenance of the UPS l Built in for J 7 -11 k. VA, H and NT series Delta Confidential

Dual input Utility B Utility A es r u t a e f S P U e onlin Bypass Filter AC to DC Inverter Switch Battery l The UPS can be connected to two separate AC sources to increase system reliability. l Built in for J 7 -11 k. VA and NT series (H series optional) Delta Confidential

s e r u t a fe PS U e n i onl Hot standby Bypass Inverter AC to DC Switch Bypass AC to DC Inverter Switch Load l One UPS output connects to another UPS’s bypass input source l Two paths that provide loads backup protection -> increased reliability l Possible with dual input UPS (J 7 -11 k. VA and NT series, H series optional) Delta Confidential

Parallel UPS 1 UPS 2 s e r u t a fe PS U e n i onl Parallel UPS to: l extend capacity or l provide N+1 redundancy Switch l Available for NT series To loads UPS N+1 Delta Confidential

Economic Mode s e r u t a fe PS U e n i onl Bypass normal Utility Load Filter AC to DC Inverter Switch Battery l l In ECO mode the load is powered by the bypass path Energy saving Some transfer time in case of mains failure (< 10 ms) Available for J 7 -11 k. VA and H series single phase models Delta Confidential

Clarification about EMC standards Generic UPS standard Old: EN 50091 Telecom standard New: IEC 62040 EN 300386 ments e r i u q re Clarify ginning of a be in the t projec B = C 1 = B J 1 -2 k. VA A = C 2 = A N series, J 3 -7 -9 -11 k. VA A (A+) = C 3 = --- H and NT series A+ / C 3 : For UPS models > 16 Amps ~10 -20 d. Bs more 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 > 16 Amps the limits are higher. © 2020/9/17 下午 06: 22: 26 Delta Energy Systems Delta Confidential

Key design parameters for UPS project l Load requirements - k. VA / k. W (k. W = k. VA x Power factor) - number of phases - voltage rating l EMC requirements (UPS standards / Telecom standards) l Required backup time l Verify external transient protection (same as with other products, see ‘Generic installation manual for power systems’) © 2020/9/17 下午 06: 22: 27 Delta Energy Systems Delta Confidential

Comparison UPS – Inverter system Advantages UPS: l Large range of load power ratings available (1 – 800 k. VA) l 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: l Redundancy can be built l Can be powered from DC power system (mixed AC and DC system) l Fulfils all telecom standards Delta Confidential

Thank You! Delta Confidential