UPS System 1 UPS UPS, Converter,,, Maintenance Bypass Switch 5 DC Converter DC, DC, Rectifier / Charger Converter DC, /, Filter Trouble, Maintenance Bypass Switch UPS Trouble, 2 UPS 1) UPS UPS 100W KVA /, 1
UPS : 10KVA UPS : 10KVA 100KVA UPS : 100KVA 2) System UPS Single UPS Input /DC DC/ on Output Bypass off Parallel UPS Input /DC DC/ on Input /DC DC/ on Output Bypass Hot Standby UPS off Input /DC DC/ on Input /DC DC/ Bypass off off Output 2-1 System UPS 2
UPS System 1 UPS Single System 2 UPS Dual System ( 2-1 ) Dual System Parallel System, Hot Stand-by System, 2-1 2-1 Paralllel System Hot Stand-by System Parallel System Hot Stand-by System System / 2 UPS 1 UPS Common, 1, 1 Bypass 1 6 Parallel UPS UPS 2 UPS UPS 1 Stand-by UPS Bypass 50% 100% 0% 100% (2 UPS ) UPS Hot Stand-by UPS UPS UPS, UPS 3
3 UPS System Operation Hot Stand-by Dual UPS System Operation 1) UPS Converter 3 480V DC,, Maintenance Bypass Switch Bypass 3 or 1 120V UPS-B 3 480V Converter DC Maintenance Bypass Switch UPS-A 3 480V Converter DC Maintenance Bypass Switch UPS-A UPS-B Maintenance Bypass Switch, UPS-A, UPS-B 4
, UPS-B UPS-A Bypass, UPS-A Maintenance Bypass Switch UPS-A Hot Stand-by UPS System Hot Stand-by System 2) Converter (UPS 30 ), Hot Stand-by UPS-B UPS-B Bypass 3 or 1 120V UPS-B 3 480V Converter DC Maintenance Bypass Switch UPS-A 3 480V Converter DC Maintenance Bypass Switch 5
3), Converter, Bypass 3 or 1 120V UPS-B 3 480V Converter DC Maintenance Bypass Switch UPS-A 3 480V Converter DC Maintenance Bypass Switch 4) Bypass Converter Bypass, Bypass Hot Stand-by System UPS-A UPS-B, UPS-B UPS-B Bypass UPS-A 6
Bypass 3 or 1 120V UPS-B 3 480V Converter DC Maintenance Bypass Switch UPS-A 3 480V Converter DC Maintenance Bypass Switch 5) Maintenance Bypass UPS Maintenance Bypass Switch, Maintenance Bypass Switch Bypass Hot Stand-by System UPS-A UPS-B Maintenance Bypass Switch UPS-A Maintenance Bypass UPS-B Single System, UPS-B Maintenance Bypass UPS-A Single System, Maintenance Bypass Switch UPS Static Switch Bypass, S/D 7
Bypass 3 or 1 120V UPS-B 3 480V Converter DC Maintenance Bypass Switch UPS-A 3 480V Converter DC Maintenance Bypass Switch 4 1) Converter (Rectifier/Charger) Converter 3 DC, 6 SCR 3 SCR 3 Diode, Phase Controller, DC Regulator Control PCB Control ( 4-1 ) DC 4-2 SCR Gate Firing 3 480V Converter DC 135V, DC 230V, DC 405V, DC540V DC 4-3 Ripple DC Filter ( 4-1 ) Converter, SCR 3 Power Fuse, Cable 3 8
Converter System Converter 4-1 Converter Circuit ( Full Wave ) ( Firing at 90 ) 4-2 SCR Gate Firing Converter DC Filter DC Filter 4-3 DC Filter Converter 9
1 DC - 4-4 (SCR) 2 4 4-4 3 - : SCR 1,4 On SCR 2,3 Off, 4-5 SCR 1,4 3 1 2 4-4-5 10
: - - SCR 2,3 On, SCR 1,4 Off, 4-6 SCR 3,2 2) Trouble UPS 30 Back-up UPS AH, DC, 3 1 2 4-4-6 3) DC /, SCR, Transistor, IGBT(Insulated Gate Bipolar Transistor), GTO(Gate Turn Off SCR) System, 4, 3 12 ( 4-7 ) 11
,, 3 120 Control PCB SCR SCR Off ( L C Commutation Circuit( ) ) SCR 1 C 1 C 3 SCR 3 L 1 TR L 2 C 2 C 4 SCR 2 SCR 4 4-7 1 SCR SCR 1 On, SCR 2 Off, SCR 3 Off, SCR 4 On SCR 1,4 On, 4-8 (a), TR 4-8 (b), Capacitor C2, C3, SCR 2 On, Capacitor C2 4-9 (a), Choke L1 Capacitor C2 SCR 1 Cathode 2 12
I SCR 1 C 1 SCR 3 C 3 L 1 TR L 2 SCR 2 C 2 C 4 SCR 4 (a) (b) 4-8 SCR 1,4 On 1, SCR 1 Off SCR 4, Mechanism Off,, TR 4-9 (b) 0V 13
SCR 1 SCR 2 L 1 TR L 2 I C 2 C 1 C 3 0V C 4 (a) (b) 4-9 SCR 1 Off Mechanism SCR 1,4 Off SCR 1 Off, SCR 2 On, SCR 3 On, SCR 4 Off SCR 2,3 On, 4-10 (a), TR - 4-10 (b), Capacitor C2, C3, SCR 4 On, Capacitor C4 4-11 (a), Choke L2 Capacitor C4 SCR 3 Cathode 2, SCR 3 Off SCR 2, Mechanism Off,, TR 4-11 (b) 0V 14
I SCR 1 C 1 SCR 3 C 3 L 1 TR L 2 SCR 2 C 2 C 4 SCR 4 (a) (b) 4-10 SCR 2,3 On 1 4) Output Filter Filter, 3, 5, 7, 3 TR Zig-zag, PWM (Pulse Width Modulation) 5, 7 L - C Filter 4-12 5, 7 Output Filter 15
SCR 1 SCR 2 C 1 L 1 TR L 2 C 2 C 3 C 4 I SCR 3 SCR 4 (a) (b) 4-11 SCR 3 Off Mechanism SCR 2,3 Off L1 L2 L1, C1 : 5 L2, C2 : 7 C1 C2 Fo = 2Π 1 LC 4-12 Output Filter 16
5) Trouble / SCR Type, SCR - Magnetic Contactor, SCR - Circuit Breaker, Control PCB Complex SCR Type 1 UPS SCR Type 4-13 (a), 4-13 (b) Control Circuit RL2 Bypass, RL2, Bypass To Load Push Button Switch, RR1 Off, 4-13 (a) SCR207, SCR 208 On Bypass From Bypass Source R SCR 208 R R RR1 SCR 207 To Load R SCR 210 R RR1 SCR 209 From (a) Circuit R 17
Rx RL2 To Load Push Button SW R RL 1 RL Q1 RL2 Bypass To Load Push Button SW _ Remark RL2 : Bypass RL1, RR1 : (b) Control Circuit For Manual Transfer 4-13 1 UPS Circuit, To Load Push Button Switch 4-13 (b) SCR Q1 On RL1, RR1 On, RR1 4-13 (a) SCR 209, SCR 210 On,, RL2 Relay Off Off SCR 18
6) Maintenance Bypass Switch UPS Trouble, Circuit Breaker Type, 3 Position Switch Type, Circuit Breaker 2 Position Switch, 3 Type Maintenance Bypass Switch 4-14 ~ 4-16 From Bypass TR Maint Bypass Switch From Static SW To Load 4-14 Circuit Breaker Type Maintenance Bypass Switch Maint Bypass Switch From Bypass TR B1 From B2 To Load Switch Position Normal Bypass Maint Bypass Switch Contacts B1 B2 4-15 Circuit Breaker - 2 Position Switch Type Maintenance Bypass Switch 19
Maint Bypass Switch From Bypass TR B3 B1 From B2 To Load Switch Position Normal Bypass Bypass Isolate Maint Bypass Switch Contacts B1 B2 B3 4-16 3 Position Switch Type Maintenance Bypass Switch 20