GENERAL FEATURES

Loads are built in cabinets of galvanized sheet metal or powder coated, suitable for outdoor installation, with resistors made in stainless steel and cooled by forced ventilation and low losses tropicalized inductors.

An efficient heat dissipation is a very important factor to get the steadiness of load, since the power absorbtion of resistors decreases with the increasing of temperature. The cooling fans installed in our equipments are characterized by a plentiful airflow in order to reduce the thermal drift of resistors, so the load power is mantained stable even over long duration test sessions.
When load power is fully disconnected, the fan stop is delayed, to ensure a more gradual cooling of resistors and extend their working life.

Thanks to a peculiar internal design the side walls do not reach dangerous temperatures.

The load banks are conceived to be modular, so it is possible to combine several loads together to achieve the necessary power, or add later other load banks to enlarge a configuration already existing.

Standard voltages: 48 VDC, 60 VDC, 120 VDC, 240 VDC, 440 VDC.

Safety Outfitting

Fault type	Protective device	Protective device consequence
Resistors short circuit	A properly sized fuse for each load step	Reduction of active power
Resistors overload	Unnecessary	--
Partial airflow lack	Thermal protection switch	Instantaneous disconnection of the whole power
Full airflow lack (optional)	Differential pressure switch	Instantaneous disconnection of the whole power
Fans overload or short circuit	Adjustable motor protection circuit breaker	Instantaneous fan stop Instantaneous disconnection of the whole power
Emergency stop	Red push-button with rotary unlocking	Instantaneous fan stop Instantaneous disconnection of the whole power
Intrusion alarm (optional)	Door microswitches on doors and sheet panels	Instantaneous fan stop Instantaneous disconnection of the whole power
Injuries caused by direct contact with potentially dangerous mechanical parts	Protection net in front of fan impeller Grids or protection nets on all dangerous accessible openings	Permanent upkeeping of safety distances from hazardous parts (barriers)

• Typical appliction area: discharge and efficiency tests on battery packs.
  

As example, see some possible configurations in the table below:

DC Voltage	kW	Curr.(A)	Dimensions (WxHxD,mm)	Pow. steps
48 VDC	10*		700x1350x825	6
48 VDC		191^	700x1350x825	8
60 VDC	15*		700x1350x825	6
60 VDC		191^	700x1350x825	8
60 VDC	31*		700x2050x1370	5
120 VDC	63*		700x2050x1370	6
120 VDC	95*		1150x2050x1370	7
120 VDC		384^	1150x2050x1370	10
240 VDC	191*		1150x2050x1370	7
240 VDC		384^	1150x2050x1370	10
440 VDC	191*		700x2050x1370	7
440 VDC	255*		700x2050x1370	8
440 VDC	383*		1150x2050x1370	9

* Power scale with resolution equal to 1 kW
^ Power scale with resolution equal to 1 A

• All specifications listed above are approximate and can be changed because of design improvements.