Specifications

2033D Specification
9
4.1.8 Equalize Charge Timer
a) Manual Equalize Charge Timer
The UPS logic shall provide a 100 hour maximum electronic manual equalize
charge timer. The timer circuit, once activated, shall provide a high rate equalizing
charge voltage to the system battery for the selected time. The circuit shall also be
capable of manual activation or deactivation via the LCD touch panel
b) Automatic Equalize Charge Timer
Once equalizing voltage level is achieved as stated by the battery manufacturer
(typically .04 to .08 VDC/cell higher than the specified float level) for a period of
10 minutes, the Converter output voltage shall return to the specified float voltage
(typically 2.25 to 2.28 VDC/cell).
4.1.9 Battery Temperature Compensation
The UPS shall have, as standard equipment, a battery temperature compensation
function allowing the Converter voltage to fold-back to a safe value in the event
the battery temperature reaches a predetermined dangerous level.
4.1.10 Step load (0-100%) changes
100% step load changes shall use ONLY the Converter to supply power to the
inverter. The batteries SHALL NOT be cycled at any time during these step
load changes.
4.1.11 DC Ripple voltage
The DC buss rms ripple voltage shall be less than 1% of the UPS’ nominal
DC
voltage level at 100% load and with no battery
connected. This shall provide for
maximum battery life.
4.1.12 Battery Self Test (DiamondSense)
For a short duration of time, a small power discharge from the battery is
automatically carried out. From this small power discharge, the Mitsubishi UPS
evaluates the degradation of the battery. The following advantages are therefore
achieved:
z The DiamondSense Battery Self-Test Function can be performed even when the
load is on the inverter
z Due to the short duration small power discharge there is no effect to the battery
life expectancy
z The small power discharge has negligible effect on the overall battery back up
time. The small power that is discharged by the battery will quickly be
replenished