Saft evolion, Техническое руководство

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13.1 Massive paralleling
Since the Evolion operates stand alone and is not limited by an external BMS, massive paralleling for power or for capacity is possible.
If the total discharge does not exceed 130 A or 5 kW, connecting any number of Evolion on the same bus, in theory, is acceptable.
In practice, balancing the branches through cable matching and meticulous double checking during installation is necessary. An
unbalance branch can cause a cascading of overcurrent problems.
If the total discharge load exceeds 5 kW or 130 Amps case, the use of external current interrupt devices should be considered. Using
external current interrupt devices eliminate the risk of damaging the BMST power board or overloading the replaceable fuse (60 Amp).
Table 3 and Figure 18 summarize the paralleling constraints of the Evolion when massive paralleling.
13. Special operations
Total discharge load is less than 5 kW or 130 A Total discharge load is more than 5 kW or 130 A
Charge
No external devices needed paralleling to increase
capacity is OK.
Avoiding current limit mode is necessary.
• dimension maximum re-charger current to be 0.75 x IMR
• pilot the current limit feature on the output of charger using
variable IMR_C from the RS485 bus
Discharge
No external devices needed paralleling to increase
capacity is OK.
Use external current interrupt device(s).
Interrupt device options may include:
(a) auto actng MCB (Saft specified)
(b) pilot contactor using RS485 bus or dry contactor signal
Table 3. Massive paralleling implementation guidelines.
Figure 18. Two conceivable ways to use external current interrupt devices with over 130 A or
5 kW of discharge load. See detailed description of (a) and (b) below illustration.