Yuasa NP Series - 12; Autonomytest Method During Commissioning

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12/ TEST METHOD FOR UPS BATTERY AUTONOMY DURING COMMISSIONING
Recommended for SWL/FXH/EN batteries. For other batteries, please contact Yuasa
12-1/ AIM
To ensure that the battery is working correctly and that the expected autonomy has
been attained when the UPS has been switched off at the cut-off voltage.
12-2/ DATA
Battery reference: ………………………
Battery: Number of strings: ……… x Number of blocks in series: ……..….
UPS: ………………………………. Power: …………..kVA, Power factor: ………..
Battery power: ………………..W
Floating voltage: …………..V (at 20°C)
Cut-off voltage at the battery terminals: …………….V
Expected autonomy at 20°C: …………..min, at 25°C: ………..….min
12-3/ LIST OF MATERIAL REQUIRED
a/ Triple or single phase discharge bench that can be adjusted and adapted to
charge the UPS at rated capacity + the cables needed for connection.
b/ Multimetres for measuring battery voltage.
c/ DC current clamp for measuring battery current (one per string with recorder if
possible).
d/ Thermal camera for measuring battery temperatures and detecting hot points
during discharge.
e / Chronometer for measuring the autonomy.
f/ Insulated torque wrench adjusted for the tightening torque recommended for the
terminals.
g/ Stickers for identifying any particular blocks.