Battery Monitoring System

Watford Control



Technical description
The battery monitoring system is used to permanently monitor fixed installed batteries. The instrument monitors the attached battery while it
records constantly the battery’s parameters to the plugged USB-stick. When needed, the stick can be removed any time to evaluate the current and
past battery state.

All cell voltages as well as the current, the ripple current and the ripple voltage of the whole battery are available on the USB-stick if wanted. Furthermore also the battery room temperature and its hydrogen concentration as well as many parameters more are written to the USB-stick.

On the high resolution display all measured parameters can directly be displayed without the use of a PC or a tablet. Additionally the instrument can
be directly connected via USB to a PC or the Megger Torkel 930/950 device. A qualified report
after the test can be generated.

Since the instrument is equipped with a standard MODBUS RTU interface, the data can easily be made available on your local PLC or PC without a
large software overhead. Like this, the battery is remotely monitored and you have the datas available at all times. (E.g. by Scada systems)

In case, you need to monitor more than 60 cells, the instrument can directly be cascaded with its second RS485 interface in order to allow more
cells.

Furthermore, the instrument has 3 potential free relay contacts. Multiple parameters can be programmed to these relays. The relay(s) can be
connected to a general UPS common alarm or PLC. Present alarm(s) can be shown by pressing F2 on the device directly. (Alarm Log)
 


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Specifications
Supply voltage:
 24-160VDC
Power consumption: Max. 5W
Power supply: Universal power supply 24 – 160VDC, for higher voltages connect the middle of the battery
Working temperature range: -5ºC to +45ºC
Max. humidity: 95%, non-condensing
Mounting: DIN-rail 35mm
Max. number of Inputs: 60
Max. voltage per cell:​ 0 – 160VDC, up to max. 300VDC on request
Cell input impedance : 1.04MΩ
Min. resolution of cell voltage: 3mV
Accuracy: +/- 3mV @ 25ºC (160V) / +/- 6mV @ 25ºC (300V)
Long term stability(3 monthperiod): +/- 0.1%
Dimensions:​ L x W x H = 213mm x 91mm x 62mm
Weight:​ 425g
CE-conformity: fulfilled

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