E-Station provide DC charging stations for Optare electric buses

2015-07-24, Reporter2 Reporter

Optare is the leading manufacturer of full size battery-powered buses in the UK. Electric buses are now beginning to make a significant mark on the public transport scene and as their use grows they will make a major contribution to cleaner and more sustainable public transport in the future. Electric buses help to reduce overall pollution levels, particularly in congested city centres where air pollution has been directly related to severe health problems.

Optare electric buses are equipped with fast charging technology which extends daily range. Optare electric buses use Circontrol CHAdeMO DC fast charging stations which can charge the 80 kWh batteries to full capacity in around two hours compared to the standard six to eight hours from a normal charge. This offers the ability to recharge the batteries during the day as well as overnight, which provides the potential to double the daily range of the buses to 300 km.

With the fast charger a bus can be easily charged during a lunchtime layover or at other quiet periods in its schedule. Operating costs of electric buses are exceptionally low too when compared with an equivalent diesel powered bus. A full charge of the 80 kWh battery costs around $20 at peak rates. Maintenance free batteries also reduce the servicing time and costs associated with the vehicle over its lifetime.

A cost benefit analysis of Perth's Central Area Transit system showed net financial savings of six million dollars if the CAT fleet was converted to electric buses. These savings are net of all procurement, operating, R&M and charging infrastructure costs. Other benefits of converting the CAT fleet to electric buses include:

  • The removal of 20,000,000 kg of CO2 and associated toxic emissions from the metropolitan area.

  • The elimination of the need for 22,000,000 litres of fuel and transport distribution costs of this fuel.

  • The elimination of 237,000,000 dB of noise from the CBD areas.


Electric bus specifications

Extended Range

Opportunity charging can be undertaken through the day allowing range to be extended to make the EV viable across a wide variety of public transport operations. Dual fast charging allows vehicles to be fully charged in approximately 60 minutes.

Energy saving technology

Regenerative braking means that most of the energy which would otherwise have been lost when the vehicle is decelerating is sent back to the batteries that power the vehicle.

Our EcoDrive management system allows driving styles to be monitored, providing drivers with the information they need to achieve optimum efficiency in service.


  • Two packs assembled in series, consisting of 26 batteries per pack.

  • 52 lithium iron magnesium phosphate batteries. 12.8v/ 138Ah (Rev 2) maintenance free type with built in electronic monitoring of key parameters.

  • Voltage 333 volts DC nominal x 2 (in parallel).

  • Forecast range approx 95 miles (150km) on a single charge, dependent on duty cycle and equipment options.

  • Charging 2 x 7.5kW integrated on-board charger connects to standard commercial three phase supply. Optional 50kW off-board charger.

  • Charge time approx 6 hours from zero to full using on-board charger. (Approx 2 hours using 50kW off-board charger).

  • Different charging options are also available: Dual fast charge, which reduces charging time by up to half or inductive 60kW charging.


An extensive choice of electric vehicle options


  • 9.25m / 9.9m

  • Up to 37 seated passengers

  • Total 58 passengers


  • 10.1m / 10.8m / 11.5m

  • Up to 44 seated passengers

  • Total 60 passengers


  • 11.1m / 11.7m

  • Up to 44 seated passengers

  • Total 60 passengers


  • Power 150kW @ 2650rpm

  • Max Torque 2380Nm @ 2650rpm


  • Horizontally mounted radiator incorporating an electronically driven cooling fan, mounted within the engine bay.


  • Drive motor, summation  gearbox, charger and battery packs fitted to demountable frame. Services fitted with "no-loss" couplings for rapid removal.


Electric bus DC fast charging system

Technical data

INPUT                                          AC
Input voltage                                 400VAC 3P+N
Nominal input power                      55KVA
Input frequency                             50/60Hz
OUTPUT                                       DC
Maximum rated output current*       120A
Maximum rated output power*         50kW
Maximum output DC voltage           500VDC
CHARGE SYSTEM                        Mode 4
SOCKETS/PLUGS                        JEVS G105
Accuracy class in active energy      Class B - EN50470-3
Accuracy class in reactive energy   Class 2 - EN62053-23
Meter Standards                            EN62052-11,EN62053-21
Ethernet                                        10/100/1000BaseTx
Enclosure rating                              IP 54 / IK 8
Operating temperature                     -30 to 60°C
RFID system                                  ISO/IEC14443A/B
HMI                                               LCD 8" screen
Interface protocol                            OCPP / XML protocol
Rear Light beacon                           Three colour led status
Power limit control                           Software limit
Mobile communications                   3G/GPRS/GSM
Harmonics filter (Optional integ-        5th harmonic
rated hormonic filter module)            7th harmonic

**Maximum rated output power can be configured via software in setup web parameters.


Contact E-Station for more information:
Phone: +61 (0) 8 6102 1285
Email: info@e-station.com.au
Web: www.e-station.com.au

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