Substation DC Charger and Discharge Testers

FDT220 is the latest version of Haomai's trusted battery discharge test systems.  Discharge testing is the only test method that provides a comprehensive insight into battery capacity, and is therefore an essential part of vigorous battery maintenance programmes.

Tests can be conducted at constant current, constant power, constant resistance or in accordance with a pre-selected load profile. It is a complete stand-alone discharge test system with voltage monitoring module in-build.

The FDT220 is connected to the battery pack and also each cell of batteries, the discharge current and the alarm levels (voltage, capacity, time) are set. After starting the discharge FDT220 keeps the current constant at the preset level. When the pack voltage or any of the battery cell voltage drops to the setting value, FDT220 shuts down the test. FDT220 monitor the whole process of discharge , and recorded values are stored in FDT220 and can easily be transferred via an USB-stick to a PC for evaluation.

Furthermore, the high discharge capacity of FDT220 gives the opportunity to shorten the test time. Discharging can take place at up to 220 A, and if higher current is needed, two or more extra load units can be linked together.

1)Specifications of Host

Voltage of applicable battery bank: 220VDC, 110VDC    
Voltage of applicable single cell: 2V, 6V, 12V
Discharge current of host: 0~50A@220V, 0~50A@110V
Max. discharge current of extra load module: 130A@220V, 65A@110V
Number of combined load module: 0~4
Constant current accuracy: ±1 %      
Voltage measurement accuracy: ±0.5 %
Communication port: USB, Ethernet

2)Specifications of 3-phase Electronic Voltage Regulator
Rated power: 15kVA    
Rated current: 30A
Measurement accuracy: ±0.5 %
Environment temperature: -20~+50ºC

3)Wireless Battery Measuring System
Modulation mode: GFSK
Working frequency: 428~434MHZ
Transmitting power: <10dBm
Receiving sensitivity: -100dBm
Transmitting current: <30mA
Receiving current: <12mA
Transmission speed: 100kbps
Transmission distance: <50m
Voltage measurement accuracy: >0.5%   
Working power source: DC 3~18V