Piller UNIBLOCK™ UBT+
UNIBLOCK™ UBT+ is Piller's rotary UPS without a built-in diesel engine. It is used where UPS and standby generator should be separate – for example to choose the engine supplier freely, reuse existing gensets or service UPS and engine independently.
- Projects with existing or freely chosen gensets
- Co-generation and gas-engine plants
- Isolated parallel (IP bus) architecture
Technical data
| Manufacturer | Piller |
| Type | Rotary UPS |
| Power | 500–2700 kW |
| Parallel | Up to 40 MW |
| Efficiency | Up to 97 % |
| Energy store | Battery or POWERBRIDGE™ |
| Voltage | Low and medium voltage |
| Cooling | Air or chilled water |
Source: www.piller.com; www.piller.com.
Technology
How it works
The same UNIBLOCK™ motor-generator and coupling choke as in the UBTD+ provide filtering, voltage regulation and fault current. During an outage the energy store – battery or POWERBRIDGE™ – feeds the machine until the generator plant has taken over.
In its brochure Piller calculates a 2 MW data centre with 5 × 500 kW (N+1) and an actual load of 900 kW: efficiency rises from 94.6 % to 96.2 % and losses fall by 140,000 kWh a year. The figures are Piller's own and depend on the actual loading.
Application
Where it fits
- Projects with existing or freely chosen gensets
- Co-generation and gas-engine plants
- Isolated parallel (IP bus) architecture
- Medium-voltage plants
Versions and options
- DeRUPS™ integration of external gensets into the UPS controls
- Containerised and water-cooled versions
- Short or long bridging with batteries
Service
Operation and maintenance
No power capacitors and usually no electric fans – the machine's own impeller provides cooling. That reduces the number of wear parts replaced at fixed intervals.
A rotary plant should always be load-tested at commissioning – stepped load, utility failures and transfer to engine.
Other models from Piller
Read more at Bluecircle
Norwerk’s partner Bluecircle has in-depth pages on the topic.
Do you have a project or a system that needs service?
Send us the load, required autonomy and voltage level – or describe the task. We will come back with a solution sized for your operation.