NT series introduction UPS training June 2006 Markus

NT series introduction UPS training June 2006 Markus Schwab

NT-series UPS Introduction Features: l Online double conversion UPS l 20 -200 k. VA models l Very compact size to save floorspace l Up to 4 units parallelable for capacity or redundancy l Very wide input voltage range for fewer switching to battery and longer battery life l 100% unbalanced and computer load suitability l Redundant auxiliary power and redundant static switch control l Intelligent charger design to extend battery lifetime l Hot-Standby function is available l Reduced charger capacity when run from generator source l Soft start to smoothly load a generator © 2021/3/4 上午 09: 59: 40 Delta Energy Systems 2

Features: l User-friendly graphic LCD display l Programmable status dry contacts l RS 232 & RS 485 communication ports l Optional SNMP interface l Local and remote Emergency Power Off ( EPO ) function l Multi-CPU digital control to minimize the number of components l Intelligent Multi-Speed cooling fan control (less dust and noise, longer life) l Manual & scheduled battery test and battery replacement warning l Built-in SRAM saves up to 500 historical records and event logs l Smart software package with 3 -phase functions included © 2021/3/4 上午 09: 59: 40 Delta Energy Systems 3

Optional features: l 12 -Pulse rectifier to reduce input current distortion l Single phase output models (20 and 30 k. VA) l Output transformers for special voltage ratings l Battery Start Function © 2021/3/4 上午 09: 59: 41 Delta Energy Systems 4

NT-Series 20 k. VA - 200 k. VA General data: © 2021/3/4 上午 09: 59: 42 Delta Energy Systems Technology: On-Line Input / Output: 3 -phase / 3 -phase Cabinet type: Tower Rating: 20, 30, 40, 50, 60, 80 100, 120 , 160, 200 k. VA Input nominal: 3 -phase 380//400/415 VAC Input range: 305 - 499 VAC Input power factor: >0, 75 Input frequency: 50/60 Hz (auto-selectable) Output voltage: 3 -phase: 380/400/415 V 1 -phase: 220/230/240 VAC Output power factor: 0, 8 Output waveform: Pure sine wave Overload: < 110% - 60 min. < 125% - 10 min. < 150% - 30 sec. 5

NT-Series 20 k. VA - 200 k. VA Temperature range: 0°C - 40°C Audible noise: 65 d. BA Crest factor: 3: 1 Input current THD: 6 -pulse (standard) 34% 12 -pulse (optional) 14% Software: UPSentry included Battery: External 29 x 12 V Communication © 2021/3/4 上午 09: 59: 43 Delta Energy Systems Front: Graphical Interface with LED indicators Interface 1: RS 232 (D-Sub Connector) Interface 2: SNMP card (optional) Interface 3: RS 485 6

Standards CE approval EMC EN 50091 -2 IEC 62040 -2 Class A for restricted use Class C 3 Safety IEC 62040 -1 -2 Restricted access UPS systems ESD IEC 1000 -4 -2 Level 4 Contact: 8 KV Air: 15 KV RS IEC 1000 -4 -3 Level 3 Field strength: 10 V/M EFT IEC 1000 -4 -4 Level 4 AC Port: 4 KV I/O Port: 2 KV Surge IEC 1000 -4 -5 Level 4 Input Port: 4 KV CS IEC 1000 -4 -6 Level 3 Strength: 10 Vrms © 2021/3/4 上午 09: 59: 43 Delta Energy Systems 7

UPS configurations © 2021/3/4 上午 09: 59: 44 Delta Energy Systems 8

Single unit configuration © 2021/3/4 上午 09: 59: 46 Delta Energy Systems 9

Parallel configuration Same bypass mains Mains 1 Load Mains 2 © 2021/3/4 上午 09: 59: 47 Delta Energy Systems 10

Hot standby © 2021/3/4 上午 09: 59: 49 Delta Energy Systems 11

Common Battery Note: For capacity increase only, not for n+1 redundancy © 2021/3/4 上午 09: 50 Delta Energy Systems 12

Hot-Standby ( Common Battery ) © 2021/3/4 上午 09: 51 Delta Energy Systems 13

Redundant auxiliary supply When one DC/DC converter fails, the UPS still normally supplies the load and alarms. © 2021/3/4 上午 09: 51 Delta Energy Systems 14

Control panel © 2021/3/4 上午 09: 52 Delta Energy Systems 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 3 sec. ) 11. Display navigation 12. LCD screen 15

Parallel operation Advantages of parallel operation: l l Enhance system reliability (redundancy) Increase power rating Easy capacity extension (on site) Cost advantage (do expansion when needed only) © 2021/3/4 上午 09: 53 Delta Energy Systems 16

N + 1 Redundancy + + + 100% 50% Capacity for 66% 66% 75% 75% © 2021/3/4 上午 09: 54 Delta Energy Systems n+1 redundancy 75% 17

Requirement of UPS Parallel Operation l Load sharing ( 3%) l Precise voltage regulation ( 1% ) l Communication l Every unit can be master l Fault isolation I 1 UPS-2 UPS-N © 2021/3/4 上午 09: 54 Delta Energy Systems VL Load I 2 IN 18

Parallel Test Waveform (1) O/P Characteristic Condition: AC MODE O/P FULL R LOAD CH 1: R Phase O/P Voltage 100 V/DIV CH 2: S Phase O/P Voltage 100 V/DIV CH 3: T Phase O/P Voltage 100 V/DIV CH 4: R Phase O/P Current 200 A/DIV Measurements taken with four sets 80 k. VA in parallel © 2021/3/4 上午 09: 55 Delta Energy Systems 19

Parallel Test Waveform (2) O/P Characteristic Condition: ON LINE MODE I/P: 600 KW Generator Source O/P: 75% R LOAD CH 1: R Phase I/P Voltage 100 V/DIV CH 2: R Phase O/P Voltage 100 V/DIV CH 3: R Phase I/P Current 200 A/DIV CH 4: R Phase O/P Current 200 A/DIV © 2021/3/4 上午 09: 55 Delta Energy Systems 20

Parallel Test Waveform (3) Transfer time Test Condition: Inverter Bypass O/P FULL R LOAD CH 1: R Phase I/P Voltage 100 V/DIV CH 2: R Phase O/P Voltage 100 V/DIV CH 3: R Phase I/P Current 200 A/DIV CH 4: R Phase O/P Current 200 A/DIV © 2021/3/4 上午 09: 56 Delta Energy Systems 21

Parallel Test Waveform (4) Transfer time Test Condition: Main Power Failure AC Backup Mode O/P FULL R LOAD CH 1: R Phase I/P Voltage 100 V/DIV CH 2: R Phase O/P Voltage 100 V/DIV CH 3: R Phase I/P Current 200 A/DIV CH 4: R Phase O/P Current 200 A/DIV © 2021/3/4 上午 09: 58 Delta Energy Systems 22

Parallel Test Waveform (5) O/P SHORT CIRCUIT CONDITION: Backup Mode (T Phase N) FULL R LOAD CH 1: UPS 1 O/P Current 200 A/DIV CH 2: UPS 2 O/P Current 200 A/DIV CH 3: UPS 3 O/P Current 200 A/DIV CH 4: UPS 4 O/P Current 200 A/DIV At short circuit in AC mode the UPS will switch to bypass to blow the load fuse faster © 2021/3/4 上午 09: 59 Delta Energy Systems 23

Parallel Test Waveform (6) Rectifier Soft Start I/P: 600 KW Generator Source O/P: 75% LOAD CH 1: R Phase I/P Voltage 100 V/DIV CH 2: R Phase O/P Voltage 100 V/DIV CH 3: R Phase I/P Current 200 A/DIV CH 4: R Phase O/P Current 200 A/DIV © 2021/3/4 上午 09: 59 Delta Energy Systems 24

Parallel Test Waveform (7) Load Sharing Test, load step Condition: ON LINE MODE I/P: 600 KW Generator Source O/P: R LOAD (0% 100%) CH 1: UPS 1 R Phase O/P Current CH 2: UPS 2 R Phase O/P Current 50 A/DIV CH 3: UPS 3 R Phase O/P Current 50 A/DIV CH 4: UPS 4 R Phase O/P Current 50 A/DIV © 2021/3/4 上午 10: 00 Delta Energy Systems 25

Parallel Test Waveform (8) Load Sharing Test Condition: ON LINE MODE I/P: 600 KW Generator Source O/P: R LOAD (0% 50% 100% 0%) CH 1: UPS 1 R Phase O/P Current 50 A/DIV CH 2: UPS 2 R Phase O/P Current 50 A/DIV CH 3: UPS 3 R Phase O/P Current 50 A/DIV CH 4: UPS 4 R Phase O/P Current 50 A/DIV © 2021/3/4 上午 10: 00 Delta Energy Systems 26

Parallel Test Waveform (9) LOAD STEP CONDITION: Nominal Line R LOAD (100% 0%) CH 1: R Phase O/P Voltage 100 V/DIV CH 2: S Phase O/P Voltage 100 V/DIV CH 3: T Phase O/P Voltage 100 V/DIV CH 4: R Phase O/P Current 200 A/DIV © 2021/3/4 上午 10: 02 Delta Energy Systems 27

Parallel Test Waveform (10) LOAD STEP CONDITION: Nominal Line R LOAD (0% 100%) CH 1: R Phase O/P Voltage 100 V/DIV CH 2: S Phase O/P Voltage 100 V/DIV CH 3: T Phase O/P Voltage 100 V/DIV CH 4: R Phase O/P Current 200 A/DIV © 2021/3/4 上午 10: 03 Delta Energy Systems 28

UPS Input Harmonic Improve Methods l Phase Shift Method ( 12 -PULSE Rectifier ) l Active Filter (in development) © 2021/3/4 上午 10: 04 Delta Energy Systems 29

12 - Pulse Rectifier Input Current Waveform 100 KVA UPS Volts = 223. 6 Vac Amps = 173. 9 A PF = 0. 765 A thd = 11. 54% AH 05 = 1. 700% AH 07 = 1. 099% AH 011= 8. 236% AH 013 = 1. 894% © 2021/3/4 上午 10: 04 Delta Energy Systems 30

Block diagram of active filter © 2021/3/4 上午 10: 06 Delta Energy Systems 31

Current waveform with active filter © 2021/3/4 上午 10: 07 Delta Energy Systems 32

6 -Pulse and 12 -Pulse Harmonic Curve © 2021/3/4 上午 10: 08 Delta Energy Systems 33

Generator Capacity Generally speaking: l If the UPS rectifier is 6 -PULSE configuration, then the generator capacity must be 2 times of the UPS capacity. l If the UPS rectifier is 12 -PULSE configuration, then the generator capacity must be 1. 5 times of the UPS capacity. © 2021/3/4 上午 10: 09 Delta Energy Systems 34

Battery Management System Battery voltage Battery current Battery parameter Load condition User settings © 2021/3/4 上午 10: 00: 10 Delta Energy Systems Battery Management System Battery Battery Battery Charge Voltage Test Result Capacity Remaining Time Low Warning Leakage Warning Installation date Next replacement date Replace Warning 35

Battery charging method l 0 ~ T 1 : constant current charge l T 1 ~ T 2 : constant voltage charge -> automatic boost charge l T 2 ~ : constant voltage charge -> float charge l Parameters can be set by the user © 2021/3/4 上午 10: 00: 10 Delta Energy Systems 36

Battery test l 0 ~ T 1 : battery floated l T 1 : start battery test -> manually -> scheduled l T 1 ~ T 2 : discharge time l T 2 : finish discharge test, battery return to floated l If the battery voltage is lower than the test voltage, the test is stopped an alarm is generated © 2021/3/4 上午 10: 00: 11 Delta Energy Systems 37

Battery Ground Fault Detect The battery ground will be connected to separate ground terminal at the UPS, large currents to ground can be detected. © 2021/3/4 上午 10: 00: 12 Delta Energy Systems 38

NT dimensions © 2021/3/4 上午 10: 00: 12 Delta Energy Systems 39

NT series Runtime table Example: © 2021/3/4 上午 10: 00: 13 Delta Energy Systems 60 KVA 30 min – NT BBU 1*4 (40 AH*4>152 AH) 100 KVA 30 min – NT BBU 4*3 (100 AH*3> 250 AH) 40

Thermal simulation Scalar Show Vector Show T max LI 1=117 0 C Y X Z Unit=ft/min © 2021/3/4 上午 10: 00: 14 Delta Energy Systems 41

Seismic Simulation for UPS 60 K - Vibration in Z Direction and Response Deflections U 3 U 1 U 2 Dynamic Animation Display (100 X Displacements) © 2021/3/4 上午 10: 00: 15 Delta Energy Systems 42 1

Seismic Simulation for UPS 60 K - Vibration in Z Direction and Response Deflections (5 X Displacements) (Green color mesh is the original shape of structure) © 2021/3/4 上午 10: 00: 17 Delta Energy Systems 43 1

Thanks © 2021/3/4 上午 10: 00: 17 Delta Energy Systems 44