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NetSure V200D50 DC Power Retrofit Installation & User Manual (UM486527803)
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Rev. F
7
INTRODUCTION
General
The NetSure™ Model V200D50 DC Power Retrofit is a power solution comprising a Mounting Frame that allows
three (3) new-generation NetSure Rectifiers (Model R48-3500e, Spec. No. 1R483500e), to be installed in the
NetSure Model 1231V1, Spec. No. 582121100 Power Bay. The Retrofit replaces one V200D50 Power Conversion
Unit (PCU), and can operate with or without the original PCUs in the same system.
The V200 Retrofit provides load power, battery float current, and battery recharge current during normal
operating conditions. Each rectifier in the Retrofit incorporates a constant power design. This means that, within
the normal operating ambient temperature range, the maximum output power available is a constant 10,500W
per Retrofit. Within the normal temperature range, the rectifiers operate in one of three modes, depending upon
load demands. Transition between modes is completely automatic.
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Constant Voltage Mode: For any initial output voltage setting from 47 to 58 volts, output voltage
remains constant regardless of load. This is the normal operating condition, in which loads are being
supplied and batteries are float charged. Rectifiers operate in the Constant Voltage Mode unless load
increases to the point where the product of load current and output voltage is approximately 10,500W
per V200 Retrofit.
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Constant Power Mode: As load increases above approximately 10,500W per V200 Retrofit (non-
adjustable), output current continues to increase, but output voltage decreases as required to maintain
constant output power. Rectifiers operate in the Constant Power Mode unless load continues to
increase to the point where the current limit setting is reached.
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Constant Current Mode: If load increases to the current limit setting, output voltage decreases linearly
to maintain output current at the current limit setting.
SPECIFICATIONS
DC Output Ratings
Voltage: Nominal -48 volts DC, Positive Ground.
a)
Without Battery Charge Temperature Compensation: Float voltage is adjustable from 47.00 to 58.00
volts DC. Test/equalize voltage is adjustable from 45.00 to 58.00 volts DC. Adjustment is made via the
system MCA. Refer to System Application Guide SAG582121300 for factory settings of Float and
Test/Equalize voltages. The output voltage temperature coefficient (1/°C) does not exceed 0.01% per
degree centigrade from 0°C to +40°C.
b)
With Battery Charge Digital Temperature Compensation Probe: This operating parameter is identical in
systems equipped with the V200D50 Retrofits and systems equipped with the original V200D50 Power
Conversion Units (PCUs). Refer to System Application Guide SAG582121100 for a complete description.
c)
With Battery Charge Analog Temperature Compensation Module: This operating parameter is identical
in systems equipped with the V200D50 Retrofits and systems equipped with the original V200D50
Power Conversion Units (PCUs). Refer to System Application Guide SAG582121100 for a complete
description.
Power and Current, One (1) V200 Retrofit: 10,500W, maximum (180.9A @ 58 VDC to 218.7A @ 48 VDC).
shows the relationship between output voltage and output current at maximum power.
