GE Industrial Solutions Galaxy Pulsar Edge - Manual (Page 174)

Galaxy Pulsar Edge Power System Controller
Issue 3 October 2011
174
rate that the controller utilizes to decrease the system DC voltage from the configured
nominal temperature value to the High Temperature Compensation Limit. The high
temperature slope setting (rate of decrease) can be set from -1mV to -10mV/
o C per cell in
-.1mV/ o C per cell steps. The factory default is -3mV/ o C per cell.
• Nominal Temperature: The nominal temperature, shown as ntt, is the battery
temperature which there is no battery voltage compensation. Slope Thermal
Compensation will be active if the feature is enabled for temperatures above or below
this temperature threshold. The nominal battery temperature range is from 15 to 30°C.
The factory default setting is 25°C.
Low Temperature Compensation
The battery Low Temperature compensation is a separate component of the overall controller’s
thermal compensation feature. Low Temperature compensation is Disabled by default, and can be
enabled only if Temperature Slope Thermal Compensation is enabled. The following are its
associated parameters.
• Low Temperature Compensation Enable: The Low Temperature Compensation
Enable/Disable, shown as rve, allows the feature to be active or disabled independently
from High Temperature compensation.
• Low Comp Limit: The Low Temperature Thermal Compensation Limit, shown as (ltt),
is the lower temperature thermal limit at which low temperature thermal compensation is
stopped and the system DC voltage is no longer increased according to the configured
linear slope rate. This temperature threshold limit can be set from -5°C to 20°C. The
factory default setting is 0°C.
• Increase: The low temperature slope increase rate, shown as lsp, establishes the linear
slope rate that the controller utilizes to increase the system DC voltage from the
configured Battery Nominal Temperature value to the Low Temperature Compensation
Temperature Limit. The low temperature slope setting (rate of increase) can be set from
1mV to 10mV/
o
C per cell in .1mV/
o
C per cell increments. The factory default setting is
3mV/ o C per cell.
Plant Battery Test
The following is a list of plant battery test parameters that can be configured in the controller. The
result of the Plant Battery Test is available in the Batteries sub-menu of the Status menu.
Manual Test: Permits manually starting a battery discharge test. The test can be set to end on
either of the following two parameters.
• Timed Duration: The duration of the test can be set from 0.1 hours to 99.9 hours and is
correlated with a system DC bus alarm voltage. Test is successful when the voltage is not
reached in the time period set.
• 20% of Capacity Algorithm: Utilizes a patented algorithm that places the system on