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Transcript
Energy Systems
DES UPS introduction
UPS training June 2006
Markus Schwab
Delta Confidential
Energy Systems
Why Uninterruptible Power Supply (UPS)?
Power Failure
Over Voltage
Under Voltage
Surge
Power Sag
Noise
Transient
Backup Power
Buck Voltage
Boost Voltage
Protection
Adjust
Variation
Harmonic
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Energy Systems
Different UPS architectures
On-Line
(Double Conversion)
UPS
Type
Off-Line
(Passive Standby)
Line-Interactive
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Off-Line UPS
Energy Systems
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: 350VA ~ 1500VA
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Energy Systems
Off-Line UPS
PC, Terminal
Application
peripherals
Fax Machine
Cashier
Desk Lamp
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Energy Systems
Block Diagram
Line-Interactive UPS
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
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Capacity: 350VA ~ 3000VA
Energy Systems
Line-Interactive UPS
High Level PC
Application
Workstation
LAN
Hub
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Energy Systems
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: 1000VA ~ 200KVA
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Energy Systems
On-Line UPS
IDC, Server
Application
RAID, MIS Facility
Industrial Equipment
Enterprise
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Energy Systems
Comparison between different architectures
OFF-LINE
LINE
INTERACTIVE
ON-LINE
I/P Normal
Utility
Utility
Input
Inverter
I/P Over or
Under
I/P Out of
range
Output
tolerance
Battery
Inverter
Battery
Inverter
Battery
Inverter
Input 
Inverter
Battery
Inverter
Big
Small
Under 2%
Transfer Time
<10 ms
<10 ms
Zero
Cost
Lowest
Low
Higher
Architecture
Simpler
Simple
More complex
AVR
Delta Energy Systems UPS product line
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Energy Systems
Extended runtime
Bypass
Utility
Load
Filter
AC to DC
Inverter
Switch
Battery
Battery
 External battery can be connected to extend backup time
 Available for whole DES product range
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Energy Systems
Bypass types
Bypass
Automatic
Bypass
AC to DC
Inverter
Manual
Bypass
Load
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
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Energy Systems
Utility B
Utility A
Dual input
Bypass
Filter
AC to DC
Inverter
Switch
Battery
 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)
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Energy Systems Hot standby
Bypass
Inverter
AC to DC
Switch
Bypass
AC to DC
Inverter
Switch
Load
 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)
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Energy Systems Parallel UPS
UPS 1
Parallel UPS to:
 extend capacity or
 provide N+1 redundancy
Switch
 Available for NT series
UPS 2
To loads
UPS N+1
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Energy Systems Economic Mode
Bypass normal
Utility
Load
Filter
AC to DC
Inverter
Switch
Battery




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
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Energy Systems
Clarification about EMC standards
Generic UPS standard
Old:
EN50091
Telecom
standard
New:
IEC62040
EN300386
B
=
C1
=
B
J 1-2kVA
A
=
C2
=
A
N 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.
© 2017年5月10日星期三 Delta Energy Systems
Delta Confidential
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’)
© 2017年5月10日星期三 Delta Energy Systems
Delta Confidential
Energy Systems
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
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Energy Systems
Thank You!
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