12
Generally speaking, the drop in voltage in the cables between the battery and the
application must not exceed 1 % of the nominal battery voltage at nominal current or
power.
For new assemblies, make sure the battery is secure, that is, remove an end
cable per battery string (accessible and visible
…) so as to avoid any potential danger
when connecting the battery to the application (terminal, fuses, circuit breaker,
terminal box,…).
Contact YUASA for definitions and supplies.
7-3/ PARALLEL CONNECTION
When several batteries have to be connected in parallel, the choice of section
from the connectors is made in relation to the current and the potential difference that
is admissible.
The length of the connectors for each battery must be equal and of the same
section so as to avoid any imbalance between the batteries in terms of charge and
discharge performance.
If all the Yuasa conditions of installation are respected,
it’s possible to connect up
to 8 strings in parallel.
For an assembly of more than 5 strings in parallel, consult YUASA France.
When being connected in parallel, it is recommended that all the polarities - be
connected together, and to fully verify that there is no potential (close to 0 V)
between the pola before connection.
7-4/ TIGHTENING TORQUE FOR THE TERMINALS
An insulated torque wrench must be used when assembling connectors to
the terminals of threaded or freeboard deck batteries. The recommendations
for the tightening torque must be respected.
The tightening torque is specified on our technical files, technical manuals and on
our assembly charts.
If insufficiently tightened, this will be the source of faulty connections (electric arc,
fire, loss of autonomy and soon).
Excessive tightening can damage the battery (rupture of the terminal sealing,
rupture of the brass insert/lead terminal link).
It is recommended that the tightening of the terminals be checked regularly
(every 2 years, for example) during maintenance visits. During batteries
transportation inside cabinet, it is advised to check the terminal tightening before
commissioning.
Summary of Contents for NP Series
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