FORZATEK 3N Series, Use And Maintenance Manual

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6
3.5 Vac adjustment on power transformer tappings
•
WARNING : the adjustment of the tapping on the power transformer with the corresponding Vac Mains is an
essential operation that cannot be underestimated.
•
WARNING: To perform this operation you need to open the battery charger and check it energized.
The operation consists of reading, using a multimeter, the Vac voltage on the input terminals of the charger and
in choosing the correct terminal (or tapping) in conformity with Vac values measured.
Each BC has an internal label reporting the output used for each transformer terminal .
Here are the voltage ranges on related BC:
Models ___1 (i.e.: 5NPS1 - single-phase)
AC Mains from 110 to 112 from 113 to 117 from 118 to 122 from 123 to 127 from 128 to 132
Tapping 110V 115V 120V 125V 130V
Models ___2 (i.e.: 5NPS2 - singlephase)
AC Mains from 200 to 204 from 205 to 215 from 216 to 230 from 231 to 245 from 246 to 253
Tapping 200V 208V 224V 240V 250V
Models ___6 (i.e.: 5NPT6 - threephase)
AC Mains from 565 to 585 from 586 to 610
Tapping 575V 600V
•
WARNING: The threephase Battery charger having code ____4 (i.e. 5NPT4) are multi-voltage: 208-240-480V
In this case you will have to pay attention also to the star-delta (DY) connection and to the voltage set on the
auxiliary transformer. Explanatory drawings are available at the end of this manual.
These chargers can adapt the voltage from 200V up to 260V and from 450V up to 510V
•
The operation must be carried out by qualified personnel.
o Connect the power plug and switch on the charger. DO NOT connect the battery.
o Open the front door (I2C) or front plate (P6C) in order to access the adjusting voltage section.
o Measure the Vac input of the charger.
o Switch off the charger.
o Adjust the tapping of the power transformer to the nearest correct value measured following tables given.
Example: A battery charger 5NPS2 suitable for 240V is connected to an electricity grid. The reading of voltage
measured on the input terminals is 217V. Move the setting cable into terminal 224V.
• WARNING: After the adjusting operations we recommend to connect the battery and start the charge process.
Repeat the voltage measurement "during" the charge. If the mains voltage have an important fall (5V or more) you
have probably a section of the input cable which is too small or the same input cable is too long and far from the
primary energy source. Or you do not have the necessary input power.
Never use extension cords, especially rolled ones.
In case of doubts please double-check the connection to the network and all its elements.
If everything is under conformity values simply adapt the transformer terminal to the new voltage detected.
4. VISUALISATION
LED Colour Signal
L1 Green Battery ON The battery is present or the charge has started. Bulk phase
L2 Yellow Final charge Charger is in the final charge (V>2,4 V/cell)
L3 Green Battery Charged The battery is charged.
L4 Yellow ON The charger is in function and supplying current
L5 Red Alarm There is a fault or an anomaly
Switch Colour
ON/OFF Black Switch stop the Battery Charger
L1 L2 L3 L4 L5
L1 L2 L3 L4 L5