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ZTE / DC Power Systems (-48V)

ZXD4000 (V5.0) Equipment information & support

The ZTE ZXD4000 (V5.0) is a carrier-grade high-power switch-mode rectifier module delivering -48V/80A (4000W) of stable DC power for central offices, mobile core facilities, and high-density telecom cabinets. Engineered with digital power topology and high-speed bus sharing, it represents the backbone of high-capacity telecom power systems.

Equipment information

Brand
ZTE
Equipment model
ZXD4000 (V5.0)
Equipment type
DC Power Systems (-48V)
Controller / software version
Confirm against the installed equipment
View full product specifications
ZTE ZXD4000 (V5.0) High-Power Telecom Switch-Mode Rectifier Module (-48V 80A 4000W Central Office DC Power) - Official Front View

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

Rated Output Voltage & Current
48Vdc (Max Continuous 80A / 4000W)
AC Input Voltage Range
80Vac - 300Vac (Wide-Range Single-Phase AC)
Peak Conversion Efficiency
≥ 93.0%
Power Density & Enclosure
134 × 87 × 290 mm
Current Sharing Imbalance
Imbalance < ±3% Across Large Parallel Fleets
Cooling System & Thermals
Dual Ball-Bearing Smart Variable Fans, Streamlined Duct

Alarms & troubleshooting

AC_IN_FAIL / Utility Grid Failure
Input Amber LED flashing, Master Alarm Red solid
Utility power outage, AC voltage outside tolerance (<85Vac or >300Vac), or tripped circuit breaker
1. Measure incoming AC line voltage to verify it has normalized; 2. Confirm that the input breaker on the distribution panel is closed; 3. Once AC grid recovers, the module soft-starts automatically to resume DC output.
DC_OV_LOCKOUT / DC Overvoltage Shutdown
Fault Red LED solid, module completely shut down
Internal voltage feedback loop failure, lightning surge ingress, or severe current-sharing imbalance
1. Probe DC bus voltage with a digital multimeter to rule out external spikes; 2. Open the input breaker, extract the module, wait 30s for capacitor discharge, and reinsert; 3. If overvoltage persists upon power-up, replace the internal control board.
FAN_FAIL_OTP / Fan Failure & Over-Temperature
Temp Amber LED solid, output power derated proportionally
HVAC failure in server room, clogged air intake filters, or seized ball-bearing cooling fan
1. Clean dust accumulation from front-panel intake grilles to ensure unrestricted airflow; 2. Confirm equipment room ambient temperature is maintained under 25°C; 3. Inspect fan rotor for mechanical obstruction; hot-swap replacement fan if seized.

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.

Contact Account Manager for Full Manual

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