nt series introduction ups training june 2006 markus schwab
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E n er gy S ystem s
NT series introductionUPS training June 2006
Markus Schwab
© 2023年4月18日 Delta Energy Systems 2
E n er gy S ystem s NT-series UPS Introduction
Features: Online double conversion UPS
20-200kVA models
Very compact size to save floorspace
Up to 4 units parallelable for capacity or redundancy
Very wide input voltage range for fewer switching to battery and longer battery life
100% unbalanced and computer load suitability
Redundant auxiliary power and redundant static switch control
Intelligent charger design to extend battery lifetime
Hot-Standby function is available
Reduced charger capacity when run from generator source
Soft start to smoothly load a generator
© 2023年4月18日 Delta Energy Systems 3
E n er gy S ystem s
Features: User-friendly graphic LCD display
Programmable status dry contacts
RS232 & RS485 communication ports
Optional SNMP interface
Local and remote Emergency Power Off ( EPO ) function
Multi-CPU digital control to minimize the number of components
Intelligent Multi-Speed cooling fan control (less dust and noise, longer life)
Manual & scheduled battery test and battery replacement warning
Built-in SRAM saves up to 500 historical records and event logs
Smart software package with 3-phase functions included
© 2023年4月18日 Delta Energy Systems 4
E n er gy S ystem s
Optional features: 12-Pulse rectifier to reduce input current distortion
Single phase output models (20 and 30kVA)
Output transformers for special voltage ratings
Battery Start Function
© 2023年4月18日 Delta Energy Systems 5
E n er gy S ystem s
NT-Series 20kVA - 200kVA
General data:
Technology: On-Line
Input / Output: 3-phase / 3-phase
Cabinet type: Tower
Rating: 20, 30, 40, 50, 60, 80100, 120 , 160, 200kVA
Input nominal: 3-phase 380//400/415VAC
Input range: 305 - 499VAC
Input power factor: >0,75
Input frequency: 50/60Hz (auto-selectable)
Output voltage: 3-phase: 380/400/415V1-phase: 220/230/240VAC
Output power factor: 0,8
Output waveform: Pure sine wave
Overload: < 110% - 60 min.< 125% - 10 min.< 150% - 30 sec.
© 2023年4月18日 Delta Energy Systems 6
E n er gy S ystem s
NT-Series 20kVA - 200kVA
Temperature range: 0°C - 40°C
Audible noise: 65dBA
Crest factor: 3:1
Input current THD: 6-pulse (standard) 34%12-pulse (optional) 14%
Software: UPSentry included
Battery
Battery: External 29 x 12V
Communication
Front: Graphical Interface with LED indicators
Interface1: RS232 (D-Sub Connector)
Interface 2: SNMP card (optional)
Interface 3: RS485
© 2023年4月18日 Delta Energy Systems 7
E n er gy S ystem sStandards
CE approval
EMC EN50091-2 Class A for restricted use IEC62040-2 Class C3
Safety IEC62040-1-2 Restricted access UPS systems ESD IEC 1000-4-2 Level 4 Contact: 8KV Air: 15KV
RS IEC 1000-4-3 Level 3 Field strength: 10V/M
EFT IEC 1000-4-4 Level 4 AC Port: 4KV I/O Port: 2KV
Surge IEC 1000-4-5 Level 4 Input Port: 4KV
CS IEC 1000-4-6 Level 3 Strength: 10Vrms
© 2023年4月18日 Delta Energy Systems 8
E n er gy S ystem s
UPS configurations
© 2023年4月18日 Delta Energy Systems 9
E n er gy S ystem s
1 2 3 4
A
B
C
D
4321
D
C
B
A
Load
BY PASS
RESERVE
RECTIFIER
OUTPUT
STATIC SWITCH
INVERTER
BATTERY
RECTIFIER
Single unit configuration
© 2023年4月18日 Delta Energy Systems 10
E n er gy S ystem s
1 2 3 4
A
B
C
D
4321
D
C
B
A
Load
UPS 1
UPS 2
Parallel configuration
Same bypass
mains
Load
Mains 1
Mains 2
© 2023年4月18日 Delta Energy Systems 11
E n er gy S ystem s
1 2 3 4
A
B
C
D
4321
D
C
B
A
Load
UPS 1
UPS 2
Hot standby
© 2023年4月18日 Delta Energy Systems 12
E n er gy S ystem sCommon Battery
1 2 3 4
A
B
C
D
4321
D
C
B
A
Load
UPS 1
UPS 2
Note: For capacity increase only, not for n+1 redundancy
© 2023年4月18日 Delta Energy Systems 13
E n er gy S ystem s
Hot-Standby ( Common Battery )
1 2 3 4
A
B
C
D
4321
D
C
B
A
Load
UPS 1
UPS 2
© 2023年4月18日 Delta Energy Systems 14
E n er gy S ystem sRedundant auxiliary supply
When one DC/DC converter fails, the UPS still normally supplies the load and alarms.
© 2023年4月18日 Delta Energy Systems 15
E n er gy S ystem s
1. EPO switch
2. Rectifier ok
3. Reserve input ok
4. Maintenance bypass on
5. Load on battery
6. Inverter operating
7. Load on reserve
8. Output ok
9. Load on inverter
10. Inverter On/Off (with for 3sec. )
11. Display navigation
12. LCD screen
Control panel
© 2023年4月18日 Delta Energy Systems 16
E n er gy S ystem s
Advantages of parallel operation: Enhance system reliability (redundancy) Increase power rating Easy capacity extension (on site) Cost advantage (do expansion when needed only)
Parallel operation
© 2023年4月18日 Delta Energy Systems 17
E n er gy S ystem s
100%
50% 50%
66% 66% 66%
75% 75% 75% 75%
N + 1 Redundancy
+ ++
Capacity for
n+1 redundancy
© 2023年4月18日 Delta Energy Systems 18
E n er gy S ystem s
UPS-1UPS-1-
UPS-2UPS-2-
UPS-NUPS-N-
I1
I2
IN
VL
LoadLoad
-
-
I1
I2
IN
VL
Load sharing ( 3%) Precise voltage
regulation ( 1% )CommunicationEvery unit can be
master Fault isolation
Requirement of UPS Parallel Operation
© 2023年4月18日 Delta Energy Systems 19
E n er gy S ystem s
O/P CharacteristicCondition: AC MODE O/P FULL R LOAD
CH1: R Phase O/P Voltage 100V/DIV
CH2: S Phase O/P Voltage 100V/DIV
CH3: T Phase O/P Voltage 100V/DIV
CH4: R Phase O/P Current 200A/DIV
Parallel Test Waveform (1)
Measurements taken with four sets 80kVA in parallel
© 2023年4月18日 Delta Energy Systems 20
E n er gy S ystem s
O/P CharacteristicCondition: ON LINE MODEI/P: 600KW Generator SourceO/P: 75% R LOAD
CH1: R Phase I/P Voltage 100V/DIV
CH2: R Phase O/P Voltage 100V/DIV
CH3: R Phase I/P Current 200A/DIV
CH4: R Phase O/P Current 200A/DIV
Parallel Test Waveform (2)
© 2023年4月18日 Delta Energy Systems 21
E n er gy S ystem s
Transfer time TestCondition: Inverter Bypass O/P FULL R LOAD
CH1: R Phase I/P Voltage 100V/DIV
CH2: R Phase O/P Voltage 100V/DIV
CH3: R Phase I/P Current 200A/DIV
CH4: R Phase O/P Current 200A/DIV
Parallel Test Waveform (3)
© 2023年4月18日 Delta Energy Systems 22
E n er gy S ystem s
Transfer time TestCondition: Main Power Failure AC Backup Mode O/P FULL R LOAD
CH1: R Phase I/P Voltage 100V/DIV
CH2: R Phase O/P Voltage 100V/DIV
CH3: R Phase I/P Current 200A/DIV
CH4: R Phase O/P Current 200A/DIV
Parallel Test Waveform (4)
© 2023年4月18日 Delta Energy Systems 23
E n er gy S ystem s
O/P SHORT CIRCUITCONDITION: Backup Mode(T PhaseN)FULL R LOAD
CH1: UPS1 O/P Current 200A/DIV CH2: UPS2 O/P Current 200A/DIV
CH3: UPS3 O/P Current 200A/DIV
CH4: UPS4 O/P Current 200A/DIV
At short circuit in AC mode the UPS will switch to bypass to blow the load fuse faster
Parallel Test Waveform (5)
© 2023年4月18日 Delta Energy Systems 24
E n er gy S ystem s
Rectifier Soft StartI/P: 600KW Generator SourceO/P: 75% LOAD
CH1: R Phase I/P Voltage 100V/DIV
CH2: R Phase O/P Voltage 100V/DIV
CH3: R Phase I/P Current 200A/DIV
CH4: R Phase O/P Current 200A/DIV
Parallel Test Waveform (6)
© 2023年4月18日 Delta Energy Systems 25
E n er gy S ystem s
Load Sharing Test, load stepCondition: ON LINE MODEI/P: 600KW Generator SourceO/P: R LOAD (0%100%)
CH1: UPS1 R Phase O/P Current 50A/DIV
CH2: UPS2 R Phase O/P Current 50A/DIV
CH3: UPS3 R Phase O/P Current 50A/DIV
CH4: UPS4 R Phase O/P Current 50A/DIV
Parallel Test Waveform (7)
© 2023年4月18日 Delta Energy Systems 26
E n er gy S ystem s
Load Sharing TestCondition: ON LINE MODEI/P: 600KW Generator SourceO/P: R LOAD (0%50%100%0%)
CH1: UPS1 R Phase O/P Current 50A/DIV
CH2: UPS2 R Phase O/P Current 50A/DIV
CH3: UPS3 R Phase O/P Current 50A/DIV
CH4: UPS4 R Phase O/P Current 50A/DIV
Parallel Test Waveform (8)
© 2023年4月18日 Delta Energy Systems 27
E n er gy S ystem s
LOAD STEPCONDITION: Nominal LineR LOAD (100%0%)
CH1: R Phase O/P Voltage 100V/DIV
CH2: S Phase O/P Voltage 100V/DIV
CH3: T Phase O/P Voltage 100V/DIV
CH4: R Phase O/P Current 200A/DIV
Parallel Test Waveform (9)
© 2023年4月18日 Delta Energy Systems 28
E n er gy S ystem s
LOAD STEPCONDITION: Nominal LineR LOAD (0%100%)
CH1: R Phase O/P Voltage 100V/DIV
CH2: S Phase O/P Voltage 100V/DIV
CH3: T Phase O/P Voltage 100V/DIV
CH4: R Phase O/P Current 200A/DIV
Parallel Test Waveform (10)
© 2023年4月18日 Delta Energy Systems 29
E n er gy S ystem s
Phase Shift Method ( 12-PULSE Rectifier )
Active Filter (in development)
UPS Input Harmonic Improve Methods
© 2023年4月18日 Delta Energy Systems 30
E n er gy S ystem s
100 KVA UPS
Volts = 223.6 Vac
Amps = 173.9A
PF = 0.765
A thd = 11.54%
AH05 = 1.700%
AH07 = 1.099%
AH011= 8.236%
AH013 = 1.894%
12 - Pulse Rectifier Input Current Waveform
© 2023年4月18日 Delta Energy Systems 31
E n er gy S ystem s
+
-
+
-
S1
S2
S3
S4
S5
S6
vSa vSb vSc
iSaiSbiSc
iLaiLbiLc
iAPFaiAPFbiAPFc
Block diagram of active filter
© 2023年4月18日 Delta Energy Systems 32
E n er gy S ystem s
I / P THD=2.9%I / P THD=2.9%
vvSaSa
iiLaLa
iiAPFaAPFa
iiSaSa
I / P THD=2.9%I / P THD=2.9%
vvSaSa
iiLaLa
iiAPFaAPFa
iiSaSa
Current waveform with active filter
© 2023年4月18日 Delta Energy Systems 33
E n er gy S ystem s
6-Pulse and 12-Pulse Harmonic Curve
© 2023年4月18日 Delta Energy Systems 34
E n er gy S ystem s
Generally speaking:
If the UPS rectifier is 6-PULSE configuration, then the generator capacity must be 2 times of the UPS capacity.
If the UPS rectifier is 12-PULSE configuration, then the generator capacity must be 1.5 times of the UPS capacity.
Generator CapacityGenerator Capacity
© 2023年4月18日 Delta Energy Systems 35
E n er gy S ystem s
Battery Management System
BatteryManagement
System
Battery voltage Battery currentBattery parameterLoad conditionUser settings
Battery Charge VoltageBattery Test ResultBattery CapacityBattery Remaining TimeBattery Low WarningBattery Leakage Warning Battery Installation dateBattery Next replacement dateBattery Replace Warning
© 2023年4月18日 Delta Energy Systems 36
E n er gy S ystem s
0 ~ T1 : constant current charge
T1 ~ T2 : constant voltage charge -> automatic boost charge
T2 ~ : constant voltage charge -> float charge
Parameters can be set by the user
Battery charging method
© 2023年4月18日 Delta Energy Systems 37
E n er gy S ystem s
0 ~ T1 : battery floated
T1 : start battery test -> manually -> scheduled
T1 ~ T2 : discharge time
T2 : finish discharge test, battery return to floated
If the battery voltage is lower than the test voltage, the test is stopped and an alarm is generated
Battery test
© 2023年4月18日 Delta Energy Systems 38
E n er gy S ystem s
Battery Ground Fault Detect
The battery ground will be connected to separate ground terminal at the UPS, large currents to ground can be detected.
© 2023年4月18日 Delta Energy Systems 39
E n er gy S ystem s
Width (mm) Depth (mm) Height (mm)600 800 1400800 830 1700
1200 830 1700
Battery(AH) Width (mm) Depth (mm) Height (mm)
NT BBU 1 40 1 600 800 1400NT BBU 2 40 1 600 800 1700NT BBU 3 40 2 900 800 1700NT BBU 4 100 1 970 800 1700
Every battery string with 29 pieces 12V batteries in series.
DimensionKVA
100/120160/200
NT Cabinet
DimensionBatterystring
NT Battery Cabinet
20/30/40/50/60/80
NT dimensions
© 2023年4月18日 Delta Energy Systems 40
E n er gy S ystem s NT series Runtime table
Example: 60KVA 30 min – NT BBU1*4 (40AH*4>152AH)
100KVA 30 min – NT BBU4*3 (100AH*3> 250AH)
KVA TIME 10mins 15mins 30mins 1Hour 2Hours 4Hours 8Hours
20KVA 25 34 51 85 151 279 484
30KVA 37 51 77 128 226 419 727
40KVA 48 68 101 169 299 552 958
50KVA 60 85 127 211 373 690 1198
60KVA 72 101 152 254 448 828 1437
80KVA 96 134 200 345 591 1093 1895
100KVA 120 167 250 418 739 1366 2369
120KVA 144 200 301 502 886 1639 2843
160KVA 192 268 401 669 1182 2185 3790
200KVA 240 334 502 836 1477 2731 4738
UNIT : AH
© 2023年4月18日 Delta Energy Systems 41
E n er gy S ystem s Thermal simulationScalar Show Vector Show
Unit=ft/min
T max LI1=117 0C
X
Y
Z
© 2023年4月18日 Delta Energy Systems 42
E n er gy S ystem s
1
Dynamic Animation Display (100X Displacements)
U2
U3
U1
Seismic Simulation for UPS 60K- Vibration in Z Direction and Response Deflections
© 2023年4月18日 Delta Energy Systems 43
E n er gy S ystem s
1
Seismic Simulation for UPS 60K- Vibration in Z Direction and Response Deflections
(5X Displacements)
(Green color mesh is the original shape of structure)
© 2023年4月18日 Delta Energy Systems 44
E n er gy S ystem s
Thanks