Case Study: Jaso J265 Tower Crane
A PUNCH Power 200 flywheel unit was used with a Jaso 265 crane. The generator was downsized from a 250kVA to a 150kVA generator, achieving a fuel saving of 36%. A small mains connection became available, and the PUNCH Power 200 unit was redeployed to allow this to be used to power the crane.
Swan house is made of two towers: a 31-story 98-meter-high tower and a smaller 13 story adjacent building, built on Manchester’s Cable Street. The primary contractor for the site was RG group, with cranes coming from Falcon Tower Cranes and supported by JR Crane Services. In this case, the construction required a Jaso J265 luffing jib crane.
The Jaso J265 would normally require a 250kVA generator. The PUNCH Power 200 system allowed this to be downsized to a 150kVA. The crane ran on this setup for 33 weeks. In this time, it saved an estimated 7088 litres of diesel and prevented almost 11 tons of CO2 emissions.
After 33 weeks running on a generator a mains connection became available, but at 115kVA this alone would not have been sufficient to support the crane. The PUNCH Power 200 unit was redeployed in a power capping mode, to ensure that this connection remained stable.
Power capping mode protects the mains supply by deploying flywheel energy if there is a risk of overloading the main supply. By setting the maximum permitted mains power, the PUNCH Power 200 can be used on multiple sizes of mains connection.
Rupert Cook, Associate Service Director at Falcon Tower Crane Services explains their reasons for using the PUNCH Power 200 “As a seasoned crane rental company, the greatest hurdle that we find consistently, is the available power on site for the crane. This has become more apparent over time as the lift capacity required on site has increased. Our standard crane is now twice the capacity when compared to similar builds 10 years ago. This has only exacerbated the problem of power supply size.
With the deployment of the Flybrid PUNCH Power 200 system we are able to harness the idle energy of the generator and store it within the flywheel, providing a split-second reactive boost to enable peak starting currents to be shaved off completely. This has, in some cases, halved the size of the generator required, massively reducing the fuel consumption and harmful emissions.
Deployed on a site with limited mains power, we have also been very successful in running a large tower crane on a mains supply normally suited to a crane half the size, while still supplying site welfare and lighting.”
Case Study: Jaso J265 Tower Crane
A PUNCH Power 200 flywheel unit was used with a Jaso 265 crane. The generator was downsized from a 250kVA to a 150kVA generator, achieving a fuel saving of 36%. A small mains connection became available, and the PUNCH Power 200 unit was redeployed to allow this to be used to power the crane.
Swan house is made of two towers: a 31-story 98-meter-high tower and a smaller 13 story adjacent building, built on Manchester’s Cable Street. The primary contractor for the site was RG group, with cranes coming from Falcon Tower Cranes and supported by JR Crane Services. In this case, the construction required a Jaso J265 luffing jib crane.
The Jaso J265 would normally require a 250kVA generator. The PUNCH Power 200 system allowed this to be downsized to a 150kVA. The crane ran on this setup for 33 weeks. In this time, it saved an estimated 7088 litres of diesel and prevented almost 11 tons of CO2 emissions.
After 33 weeks running on a generator a mains connection became available, but at 115kVA this alone would not have been sufficient to support the crane. The PUNCH Power 200 unit was redeployed in a power capping mode, to ensure that this connection remained stable.
Power capping mode protects the mains supply by deploying flywheel energy if there is a risk of overloading the main supply. By setting the maximum permitted mains power, the PUNCH Power 200 can be used on multiple sizes of mains connection.
Rupert Cook, Associate Service Director at Falcon Tower Crane Services explains their reasons for using the PUNCH Power 200 “As a seasoned crane rental company, the greatest hurdle that we find consistently, is the available power on site for the crane. This has become more apparent over time as the lift capacity required on site has increased. Our standard crane is now twice the capacity when compared to similar builds 10 years ago. This has only exacerbated the problem of power supply size.
With the deployment of the Flybrid PUNCH Power 200 system we are able to harness the idle energy of the generator and store it within the flywheel, providing a split-second reactive boost to enable peak starting currents to be shaved off completely. This has, in some cases, halved the size of the generator required, massively reducing the fuel consumption and harmful emissions.
Deployed on a site with limited mains power, we have also been very successful in running a large tower crane on a mains supply normally suited to a crane half the size, while still supplying site welfare and lighting.”
