Vertiv
™
NetSure
™
-48 VDC Power System
System Application Guide
Spec. No: 582140001
Proprietary and Confidential © 2022 Vertiv Group Corp.
SAG582140001
Model No: 801
NLDB
, 801
NLEB
, 801
NL
-
B
Page 69
Revision T, September 28, 2022
•
Response time is ≤200
µ
s, and the overshoot is ≤5% for load changes at 50%-25%-50% and 50%-75%-
50%.
•
Overshoot or undershoot is ≤5% and within ±1% of the regulation band, ≤4 ms at 50
µ
s for load
changes at 10%-90% and 90%-10%.
3.1.8
Regulation (via MCA)
(A)
Static: The MCA controls the steady state output voltage to within ±0.5% 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 Rectifier Modules.
(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.
3.1.9
Filtering (with or without battery): Typical readings were taken at nominal input voltage, nominal output
voltage, 50% load, and 25 degrees C ambient.
(A)
Voice Band Noise: Complies with Telcordia GR-947_CORE.
(1)
Typically 20.4 dBrn C-message weighting. Does not exceed 32 dBrn C.
(2)
Typically 0.28 millivolts psophometric. Does not exceed 1 millivolt psophometric.
(B)
Wide Band Noise: Complies with Telcordia GR-947_CORE.
(1)
Typically 55 millivolts peak-to-peak. Does not exceed 200 millivolts peak-to-peak
(2)
Typically 15.9 millivolts rms. Does not exceed 100 millivolts rms.
3.1.10
Hold Up Time: 10 ms (The DC voltage is allowed to decrease to 42V from 54V during the test.)
3.2
AC Input Ratings
3.2.1
Voltage: Nominal 380/480 volts AC, three phase, 50/60 Hz, with an operating range of 260 to 530 volts.
Acceptable input frequency range is 45 to 65 Hz.
Maximum non-destructive input voltage when rectifier is not operating: 600 VAC
3.2.2
Current: <13A @ 5800 W, and at an input voltage of 260 VAC.
3.2.3
THD (Total Harmonic Distortion): ≤5% when loaded at 50 to 100% of the rated output power.
3.2.4
Inrush Current: <150% of the rated input steady-state peak value.
