Yuasa NP Series, Инструкция по установке, использованию и уходу

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If the temperature is not 20°C, the expected autonomy must be recalculated with the
minimum temperature obtained.
This autonomy can easily be determined using our ISY light/indirect calculation
calculator, which can be accessed freely at http://yuasa.itelios.net
Extended autonomy: …………. min
e/ Connect the charge bench to the UPS, and adjust the bench power.
The charge bench must be positioned as far as possible from the batteries to prevent
the temperature of the premises from rising during discharge.
It should be noted that discharge battery power must correspond to the battery power
retained in the data (see 12-2/).
During the discharge measurements, the battery power will be determined by the
product of the voltage at the battery terminals (to eliminate any voltage drop in the
cables) and the battery’s total current, which is the sum of the currents in each
battery string.
f/ Before switching the power supply of the UPS to the battery, wait a few minutes in
order to ensure that the power output of the UPS has stabilised.
12-6/ AUTONOMY TEST (D DAY), JUST BEFORE BATTERY DISCHARGE
Just before switching the charge to the battery (switching off the UPS), prepare to:
- Start the chronometer.
- Sweep the blocks and their connections with the thermal camera to identify any
hot points. In discharge, a battery does not heat up, but on the contrary, the
connections and cables, depending on the discharge current, will heat up
progressively (30/40°C is possible). Any abnormal hot points on a battery
terminal are the sign of poor tightening.
- Measure the currents in the different strings using a current clamp (or clamps)
and check that they are balanced (+/-20% max.).
- Measure the discharge voltage by sampling the blocks and ensuring that they are
homogenous. It should be noted that at the end of the discharge (around 80%
autonomy) the dispersion in voltage between the blocks can be accentuated (+/-
10%). To save time, it is possible to measure the voltage of the blocks 2 by 2.
- Measure the total voltage in the battery terminals (the voltages in each string will
be identical).