MaxPower Corp Gamatronic Power+ M50-RM - Manual (Page 161)

Gamatronic Electronic Industries Ltd.
POWER+ RM 50 K VA, N.Am. Std. – User Guide, Release 1.9 145
an optional battery current sensor.
f. T.C. = 2.0mV: negative temperature coefficient of the battery dc voltage in mV per °C
per battery cell. Nominal temperature is 25 °C. For dc nominal voltage 432 V ,
temperature 35 °C, 32 batteries of 6 cells, T.C.=2 mV, the voltage is 432- 2*6*32*(35-
25)~=428 V. NOTE. For most applications T.C. must be 0 (off).
g. DCV: Dc nominal voltage for both positive and negative battery sets. For 32 batteries in
the set DCV=432 V, for 16 batteries 216 V.
h. DCV …ALM: Dc voltage alarms HIGH/LOW/SHUTDOWN. SHUTDOWN alarm is dc
voltage value when the unit is stopped due to battery discharge.
i. BATT….TEST: PERIOD IN WEEKS/MAX.DURATION IN HOURS/ALARM
VOLTAGE/CHARGER DERATED VOLTAGE. In the screen: the test is performed
automatically once per 4 weeks, max. test duration is 5 Hours, if battery voltage drops
below 360 V alarm Battery Low is produced, and the chargers for the modules continue
to supply a voltage of 352 V to prevent shutdown if battery is faulty.
j. CAP: CAPACITY in Amp-Hours. Used to calculate estimated back-up time of the
system and battery test duration.
8.15.9.2 Second General Screen
From the screen shown in the previous section, press
► to view screen 2:
[3-second Esc > GENERAL > ►]
CURRSHARE RST: DIS #OF PHASE: AUTO
REV : SC25230909 LVD BY AC FAIL: DIS
MAINT: 2010.05.12 TEMP. SENSOR: DIS
SITE : 000001 CURR. SENSOR: DIS
Figure 300: General (Screen 2)
A description of the various system parameters shown in screen 2 are listed below.
a. CURRSHARE RST: displays the status of the current sharing—either enabled or
disabled (EN or DIS).
b. #OF PHASE: FORCE 3 for 3-phase output, FORCE 1 for single-phase output or AUTO
when the mode is defined by DIP SWITCH of the modules.
c. REV: revision of the system controller (SC) software.
d. LVD BY AC FAIL: DIS (disabled) or EN (enabled). This function, if enabled, performs
system shutdown after 3 hours of ac failure to prevent deep battery discharge by low
current. For most applications, the function must be disabled.
e. MAINT: YEAR.MONTH.DAY: date of last maintenance.
f. TEMP. SENSOR: DIS or EN. External temperature sensor is disabled/ enabled. In most
applications, it must be disabled.
g. SITE: the site identification number is used in network applications.
h. CURR.SENSOR: DIS or EN. Optional battery current sensor is disabled/ enabled. In
most applications, it must be disabled.