Page 81 - E24 Electrical Notebook

UPS Application Design Guidance - 77

UNIBLOCK™ UBT+ Rotary UPS - Operation UNIBLOCK™ UBR Hybrid Rotary UPS - Operation

In normal operation the load is supplied via the choke with the Piller Normal operation is through the static switch (thyristor) path (Mains 2).
UNIBLOCK™ machine operating in parallel via the central tapping of the The thyristor switch is controlled so that active power flows only in the
choke. The generator winding of the UNIBLOCK™ machine supplies the direction of the motor of the UNIBLOCK™ machine. The generator of the
load with the same dynamic characteristics as an AC supply system. UNIBLOCK™ machine supplies the load with the same dynamic
characteristics as an AC supply system.
In the event the supply falls outside the input characteristics, the input
contactor opens and the module is supplied from the energy store via In the event of a fault in the thyristor switch the UNIBLOCK™ machine
the UNIBLOCK™ machine. is supplied exclusively by the rectifier and inverter circuit (Mains 1).
Similarly during a failure of the rectifier / inverter circuit the UNIBLOCK™
The choke acts as a filter preventing the transmission of harmonics to machine is supplied by the thyristor switch. In the event of a mains failure
the mains from the load and vice versa. The UNIBLOCK™ generator the UNIBLOCK™ machine is fed via the battery and inverter with the
windings are used to supply reactive current improving the UPS input input contactors opened.
power factor.
The generator of the UNIBLOCK™ machine can supply peak currents
The generator of the UNIBLOCK™ machine can supply peak currents without being limited by the current ratings of additional semiconductors.
without being limited by the current ratings of additional semiconductors. The impedance of the generator - which is similar to that of the AC line
The impedance of the generator - which is similar to that of the AC line delivers a short-circuit current of up to 18 times the rated current without
- delivers a short-circuit current of up to 18 times the rated current without switching back to Mains (even when operating in battery mode).
switching back to Mains (even when operating in energy storage mode).
The motor voltage provides natural commutation for the inverter and the
The UNIBLOCK™ machine generates a sinusoidal voltage so no power UNIBLOCK™ machine generates a sinusoidal voltage so no power
capacitors are necessary for commutation or filtration. The brushless capacitors are necessary for commutation or filtration. The brushless
excitation of the motor / generator is provided by an exciter mounted on excitation of the motor / generator is provided by an exciter mounted on
the shaft and the generator voltage is electronically regulated. the shaft and the generator voltage is electronically regulated.

The technology, combined with no capacitors and control redundancy, The internal redundancy combined with no capacitors and control
makes the UBT+ Rotary UPS one of the most reliable UPS available. In redundancy makes the UBR Hybrid Rotary UPS one of the most reliable
addition, since the UPS operates via the choke, it achieves efficiencies UPS available. In addition, since the UPS does not normally operate through
up to 97% and improved efficiencies at partial loads. the double conversion path, it achieves efficiencies in excess of 95%.

UBT+ Input Data UBR & UBT+ Output Data UBR Input Data

Input 380 – 415 V 50 Hz Output 380 - 415 V 50 Hz Input 380 - 415 V 50 Hz
+10%/-20%; -50% short term ± 1% (Steady State) +10% / -20%
Voltage: Voltage: 110% for 1 hour Voltage:
Voltage Tolerance: 0.97 Voltage Tolerance: 125% for 10 minutes Voltage Tolerance: > 0.95
Power Factor at < 3% (Meets G5/4) Overload Capacity: 150% for 2 minutes Power Factor at < 2% (Meets G5/4)
Rated Voltage: 0.8 Lag to 0.8 Lead Rated Voltage:
THDi (Normal Op.): Power Factor: Up to 95% THDi (Normal Op.):
Efficiency (UBR): Up to 97%
General Up to 1000m ASL Efficiency (UBT+): Up to 18 x Rated General Up to 1000m ASL
Operational Altitude: 0 - 40°C Short Circuit Current (no bypass required) Operational Altitude: 0 - 40°C
Ambient Temperature: Daily Mean <35°C Capacity: Unlimited Ambient Temperature: Daily Mean <35°C
0 - 95% Non-Condensing Load Crest Factor: 0 - 95% Non-Condensing
Relative Humidity: IP 20 Relative Humidity: IP 20
Ingress Protection: >860,000 hours Ingress Protection: >600,000 hours
Reliability: Reliability:

Piller UNIBLOCK™ UBT+ Rotary UPS Piller UNIBLOCK™ UBR Rotary UPS

Guide to Dimensions & Weights Guide to Dimensions & Weights

POWERBRIDGE™ (Flywheel) Backed UPS 150 kVA 220 kVA 330 kVA 420 kVA
LxWxH LxWxH LxWxH LxWxH
625 kVA / 560 1100 kVA / 1000 1625 kVA / 2250 kVA / 2000 UNIBLOCK™
kW L L x W x H kW L x W x H 1500 kW L x W kW L x W x H UBR 1905 x 865 2438 x 865 2438 x 865 2740 x 985
x 2200 x 2200 x 2200 x 2200
xH Weight kg
2510 3725 3725 5285
UNIBLOCK™ 1320 x 4110 1320 x 5300 1320 x 5300 1320 x 8990 5 min
UBT+ & PB x 2300 x 2700 x 2700 x 2700 VRLA Batt. 2010 x 480 1630 x 722 2880 x 480 3050 x 755
x 1581 x 1617 x 2371 x 1617
Weight kg 11910 19700 22170 24750

Battery Backed UPS Weight kg 1370 2390 2920 4760

625 kVA / 1100 kVA / 1500 kVA / 10 min 1630 x 722 2880 x 480 3050 x 755 2 x (3360 x 480
560 kW 1000 kW 1340 kW VRLA Batt. x 1617 x 2371 x 1617 x 1984)
LxWxH LxWxH LxWxH
UNIBLOCK™ 980 x 2710 1320 x 4600 x 2700 1320 x 4600 Weight kg 2390 2920 4760 5560
UBT+ x 2300
14240 x 2700 UNIBLOCK™ 500 kVA 625 kVA 800 kVA 1100 kVA
Weight kg 5810 UBR LxWxH LxWxH LxWxH LxWxH
2 x (3680 x 700 x 2395) 15340
15000 1 x (3578 x 700 2740 x 985 2860 x 985 3662 x 1320 3662 x 1320
x 2200 x 2200 x 2353 x 2353
4 x (3680 x 700 x 1605) x 2395) +
20000 2 x (3578 x 700 Weight kg 6235 6235 12440 13150

5 min 3050 x 755 x 1605) 5 min 3050 x 755 2 x (3360 x 480 2 x (3360 x 480 2 x (3040 x 755
VRLA Batt. x 1617 17050 VRLA Batt. x 1617
Weight kg 4760 4 x (3578 x 700 x 1984) x 2379) x 2012)
10 min x 2000)
VRLA Batt. 3090 x 755 Weight kg 4760 5560 6660 11960
x 2407 24350
Weight kg 10 min 3090 x 755 2 x (3050 x 755 2 x (2410 x 755 2 x (3090 x 755
7200 VRLA Batt. x 2407
x 1617) x 2092) x 2407)

Weight kg 7200 9520 10140 14570

Piller UK Ltd Tel : 01285 657721
Westgate Fax : 01285 654823
Phoenix Way
Cirencester Email : uk@piller.com
Glos GL7 1RY Website : www.piller.com