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ZTE / DC Power Systems (-48V)

ZXDU48 B900 (V5.0) Equipment information & support

The ZTE ZXDU48 B900 (V5.0) is a 3U embedded telecom DC power subrack accommodating up to 3 x ZXD1500 (V5.0) rectifiers, delivering -48V 90A (4500W) output for cellular base stations.

Equipment information

Brand
ZTE
Equipment model
ZXDU48 B900 (V5.0)
Equipment type
DC Power Systems (-48V)
Controller / software version
Confirm against the installed equipment
View full product specifications
ZTE ZXDU48 B900 (V5.0) Embedded DC Power System (-48V 90A 3U Subrack) - Isometric 45-Degree Angled View

Information below comes from the current product catalogue. Confirm the controller, software version and configuration of the installed equipment separately.

Rectifier Module Slots
3 Hot-Swappable Slots (ZXD1500)
AC Input Voltage
80V - 300V AC Wide Grid Tolerance
Rated Distribution Capacity
90A / 4500W (3 Rectifier Modules)
Nominal DC Output Voltage
-48VDC (-42V ~ -58V)
Chassis Form Factor
Floor-Standing High-Capacity DC Power System Cabinet
Peak Energy Efficiency
95%

Alarms & troubleshooting

MAINS_FAIL / AC_POWER_LOSS
Power distribution Amber LED solid, controller buzzer active
Mains utility grid failure, upstream transformer trip, or main AC breaker open
1. Verify battery discharge current and remaining backup runtime on monitor;\n2. Start standby generator (DG) and confirm transfer switch closure;\n3. Measure incoming 3-phase AC voltage and frequency stability;\n4. After grid recovery, verify rectifiers soft-start and initiate boost charging.
LLVD_TRIP / LOAD_SHEDDING
Controller screen displays LLVD alarm, DC load contactor opened
Prolonged blackout caused battery voltage to drop below threshold (44.0VDC default), shedding non-critical loads
1. Confirm priority telecommunication loads on BLVD branch remain powered;\n2. Deploy mobile emergency power generators to replenish battery plant;\n3. Upon grid restoration, observe DC bus rising past reset threshold (48.0VDC);\n4. Verify all load shedding contactors re-engage and resume service.
SPD_FAIL / SURGE_ARRESTOR
Surge arrestor inspection window turns Red from Green, alarm relay closed
Lightning induced transient surge or utility overvoltage caused MOV thermal breakdown and disconnection
1. Inspect visual disconnect indicator window on AC surge protector module;\n2. Verify upstream SPD backup fuse or miniature circuit breaker status;\n3. Open SPD circuit breaker and pull out damaged plug-in cartridge;\n4. Insert genuine replacement cartridge (20kA/40kA rating) and reset breaker.

Access Complete Maintenance & Full Alarm Troubleshooting Manual

This page lists high-frequency critical alarm codes commonly encountered in field maintenance. Comprehensive manufacturer troubleshooting matrices, board-level repair guides, detailed electrical schematics, and firmware commissioning manuals are delivered alongside equipment upon formal project procurement, accompanied by dedicated FAE technical support.

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