V-TAC VT-204100, Инструкция по эксплуатации

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18
No. Item Specification Remark
7 Equalization Negative equalization ≤ 300 mA
8 Operation temperature -20
℃～
75
℃
9 Operation humidity 5%-95%RH
3.3.2 BCU
The BCU integrated with the high-voltage box is the intermediate level of the BMS. It collects information
from the BMU and transmits it to the PCU.
BCU can effectively manage the safety of charge and discharge of battery clusters, provide real-time
monitoring of battery parameters, fault diagnosis, SOC/SOH estimation, insulation detection, remote
monitoring, and other functions, and trigger protection when alarm and emergency battery module
possible failures appear, to ensure the safety, reliable and stable operation of battery modules.
BCU's main technical specifications are shown as follows.
Table 11. BCU main technical specifications
No. Item Specification Remark
1 Power supply 24 VDC
2 Power consumption
＜
2 W
3 Total voltage sampling 0 V~600 V ±(0.5%FS+0.1%RD)
4 Current sampling 0 A~1000 A ±(0.5%FS+0.5%RD)
5 Temperature sampling 2 Channels, -20
℃
-125
℃
Accuracy ±2
℃
6 DO 8 channels
7 DI 8 channels
8 Insulation 0~5 M Ω
Total voltage ≥ 400 V, accuracy ±20%
；
Total voltage
＜
400 V, accuracy ±30%
；
Insulation resistance ≤ 5k Ω , accuracy ±10k Ω
9 SOC estimate accuracy ≤ 8%
10 Communication type CAN-3 channels, RS485-2 channels
3.3.3 PCU