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NetSure V200D50 DC Power Retrofit Installation & User Manual (UM486527803)
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Rev. F
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approximately 280 volts (non-adjustable), the rectifier automatically restarts, and the protection
indicator extinguishes.
2.
Over Voltage Isolation: The Rectifier will be disconnected from the AC input when a preset non-
adjustable value is reached.
Output Protection:
a)
Current Limiting: The maximum current delivered by the system can be programmed from 10% to 110%
of total system capacity. The MCA automatically adjusts the current limit circuit on each V200 Retrofit
so that this value is not exceeded. If a V200 Retrofit fails, the MCA automatically resets current limit
point of each remaining V200 Retrofit to maintain this value. The MCA also insures that the current
limit circuit of each remaining V200 Retrofit is not set above 110% of its capacity. The default current
limit setting is the sum of the output ratings of each installed V200 Retrofit. If a V200 Retrofit is added
to the system, the system current limit is automatically increased by the rating of the new V200 Retrofit
and the new current limit value is displayed.
The current limiting point can be adjusted without removing a V200 Retrofit. One adjustment changes
the setting of all V200 Retrofits.
The current limit is factory set at 100% of rated full load, unless otherwise specified.
b)
Thermal Power Limiting: Each rectifier continuously monitors the ambient temperature surrounding the
power conversion circuit. If this temperature for any reason (such as a high ambient temperature)
increases above approxi45°C (+113°F), the Rectifier will not shut down. Rather, the rectifier will
limit its maximum output power to maintain the temperature of the power conversion circuit within
design parameters. Operation b45°C (+113°F) and +65°C (149°F) will result in the output power
being decreased. Full power capability is restored when the temperature decreases to below
approxi45°C (+113°F).
illustrates typical operating parameters.
WARNING!
The module is rated for continuous operation at full output power up to +45°C (+113°F).
Operation b45°C (+113°F) and +65°C (149°F) will result in output power decreasing. Operation
above +65°C (+149°F) is considered abnormal and should be used on a temporary
1
basis only.
1
Temporary Operation at Abnormal Temperature: Temporary operation refers to a period of not more
than eight consecutive hours per day, and a total of not more than 15 days in a year. (This refers to a
total of 120 hours in any given year, but no more than 15 occurrences in that one year period.)
Figure 4:
Typical Thermal Power Limit Curve
