Application Guide

System Application Guide SAG582140000
Spec. No. 582140000 (Models 802
NLDB, 802NLEB and 802NL-B) Issue AW, June 3, 2014
Page 103 of 134
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increases or decreases the output voltage as battery ambient temperature
decreases or increases, respectively. Float voltage is factory set at approximately
54.48 volts at 25°C battery ambient. The float and test/equalize voltage range is the same
as without battery charge temperature compensation. Using battery and equipment
manufacturers’ recommendations, the user selects the following temperature
compensation curve parameters via the MCA. Refer to "Typical Float Charge Thermal
Characteristics Using Optional Battery Charge Digital Temperature Compensation Probe"
in Battery Charge Temperature Compensation Probe for Digital Compensation under
ACCESSORY DESCRIPTIONS.
(1) The temperature compensation slope in volts/°C. Adjustable from zero to 200
millivolts/°C. Factory set at 0V/°C (DIGITAL TC OFF).
(2) The maximum voltage limit in volts DC. Adjustable from float up to 58.5 volts DC, but
automatically limited to one volt below the High Voltage Shutdown setting. Factory set
at 56.5 volts DC.
(3) The minimum voltage limit in volts DC. Adjustable from float down to 44 volts DC.
Factory set at 50.0 volts DC.
3.1.2 Current: Two hundred (200) amperes per Rectifier, up to a total of 2,000 amperes per
Power/Distribution Bay with ten (10) Rectifiers installed, and up to a total of 10,000 amperes
per system when equipped with 50 Rectifiers.
3.1.3 Regulation
(A) Static: The MCA controls the steady state output voltage to within ±0.05% of any voltage
setting within the range of 44.0 to 58.0 volts DC for any and all combinations of load from
no load to full load, input voltage, and input frequency at a constant ambient temperature.
If the MCA's regulation feature is disabled for any reason, steady state regulation is ±1.0%
as controlled within the Rectifiers.
(B) Dynamic Response: For any step load change from 10% to 90% or from 90% to 10% of
full rated load within 250 microseconds, shall not cause the voltage measured at the output
to overshoot or undershoot more than 5% of the regulated output level within 1 millisecond.
The output voltage must return and stay within the ±1% regulation band within 4
milliseconds and within the ±0.5% regulation band within 3 seconds. Any step change of
the line voltage within the limits specified in Paragraph 3.2.1 shall not cause the output
voltage to deviate outside the ±0.5% regulation band.
3.1.4 Filtering (with or without battery): Typical readings were taken at nominal input voltage,
nominal output voltage, 50% load, and 25°C (77°F) ambient.
(A) Voice Band Noise: Complies with Telcordia GR-947-CORE.
(1) Typically 21 dBrn with C-message weighting. Does not exceed 38 dBrn C.
(2) Typically 0.100 millivolt psophometric. Does not exceed 2 millivolt psophometric.
(B) Wide Band Noise: Complies with Telcordia GR-947-CORE.
(1) Typically 200 millivolt peak-to-peak. Does not exceed 250 millivolt peak-to-peak.
(2) Typically 10 millivolts rms. Does not exceed 100 millivolt rms.
3.2 Input Ratings (480VAC, with 486532602 Rectifier)
3.2.1 Voltage: Nominal 480 volts AC, three phase, 60 Hz, with an operating range of 408 to 528
volts. Acceptable input frequency range is 57 to 63 Hz.
3.2.2 Harmonic Content: Complies with IEEE-519-1992. Voltage harmonic distortion of less than
5% at nominal input when operating on a line impedance of 0.104 ohms or less.
3.2.3 Inrush Current: Peak does not exceed 6 times the RMS input current at full load, under any
conditions of input voltage within the rated input voltage range stated in Paragraph 3.2.1 and
for any duration of AC input interrupts. Under the above conditions, standard AC distribution
circuit breakers will not trip.
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