Ptek NR3 three phase is designed to recharge medium - large capacity traction and
start lead-acid batteries, developed using our forty-year experience in the field of
battery chargers and multi-years application of microprocessor control systems which
constantly monitors the basic parameters to ensure a correct operation and therefore
safeguard the battery’s life.
230-400V three-phase supply - adjustable ± 5% with possibility to request voltage
different from the standard ones, microprocessor control with dip-switch programmable
gearcase 24V - 36V - 48V - 72V – 80V, 220V coil three-pole contactor, D.C. fuse on
rectifier output, rectifier bridge with snubber protection, short check of functions and
times, option to program the equalized charge automatically, lab tested electronic
circuit conforming to the directive on electromagnetic compatibility and CE marking,
automatic disconnection of battery charger due to battery disconnection, equalization
charge based on time, charging with decreasing current (Wa characteristic): 9÷11
h charging time, transformer thermal protection, modular installation on galvanized
steel base, sheet steel case with modular panels, epoxy powder coating, oven-baked,
standard colour: RAL 2004 orange, option: custom-made color, logo and silk-screen
printing, mains input and d.c. output polarized cables, complete with mains and
battery cables; assembly of plugs and battery connectors on request.
“WA” CHARACTERISTIC (DIN 41774):
charge at decreasing current with intervention of adjustable final
charge from 2.35 to 2.40 V/cell., final charge with timed control 9h /
11h, fixed charging time (equalization charge excluded), equalization
charge (week-end charge) to be recalled. It will start after 55’ from
charge end, duration of equalized charging phase: each hour 5’
(repeated for 48 hours), calculation to determine the size of suitable
battery charge: 16A for every 100 Ah of the battery (e.g. 500 Ah
battery: 16Ax5 = 80A).