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Huawei / Outdoor power systems

TP48600B-N16C1 Equipment information & support

The Huawei TP48600B-N16C1 is a centralized floor-standing DC power plant combining AC surge protection, high-efficiency conversion, multi-tiered battery Low Voltage Disconnect (LVD), and remote SNMP network management.

Equipment information

Brand
Huawei
Equipment model
TP48600B-N16C1
Equipment type
Outdoor power systems
Controller / software version
Confirm against the installed equipment
View full product specifications
TP48600B-N16C1 Official Product View 1

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

Nominal DC Output Voltage
-48 V DC
Physical Dimensions Spec
1600 × 600 × 600 mm
Operating Temperature
-40 ~ +65 °C
Rectifier Module Slots
12 × 50A Slots
AC Input Mode
380V three-phase four-wire system

Alarms & troubleshooting

AC_FAIL (Mains Failure / Phase Loss)
SMU ALM LED solid red; Rectifier RUN LED off, ALM LED solid red/yellow
Utility grid blackout, AC main input circuit breaker tripped, loose input terminal connection, or AC phase voltage below 85 VAC.
1. Measure phase-to-phase and phase-to-neutral voltages at the AC distribution block using a digital multimeter (normal range: 85V-300 VAC). 2. Verify upstream utility feed breakers and cabinet main AC breakers are closed. 3. Secure terminal block screws, inspect cable integrity, and restore grid power supply.
DC_UNDER_VOLT (DC Output Undervoltage / LLVD Active)
SMU ALM LED solid red, audible buzzer active, LLVD contactor disconnected indicator engaged
Prolonged mains outage causing deep battery discharge below threshold (default -45.0 VDC), triggering LLVD contactor disconnect.
1. Connect a mobile emergency generator or restore utility AC power to energize rectifiers and DC bus. 2. Access the SMU interface to verify battery discharge current and undervoltage disconnect configuration parameters. 3. Verify rectifiers switch to boost charge mode and LLVD contactor automatically reconnects the loads.
REC_HVSD (Rectifier Output Overvoltage Hardware Lockout)
Faulty rectifier ALM LED solid red, RUN LED off; SMU reports Rectifier Overvoltage Lockout
Internal voltage control circuit failure inside the rectifier causing DC output to exceed 59.5 VDC hardware threshold, triggering protection lockout.
1. Identify the faulty slot, unlatch and extract the rectifier module to disconnect it from the backplane. 2. Wait 30 seconds for internal discharge, reseat the module firmly, and monitor power-on self-test. 3. If overvoltage lockout recurs immediately, replace the damaged rectifier with a functional spare (e.g., R4850G/R4875G).
CAN_COMM_FAIL (Rectifier CAN Bus Communication Failure)
Rectifier ALM LED blinking yellow (0.5 Hz), RUN LED solid green; SMU reports 'Rectifier Comm Failure'
Loose CAN ribbon cable between backplane and SMU, missing/improper CAN termination resistor, or a failed CAN transceiver dragging down bus voltage.
1. Verify and reseat the CAN flat ribbon cable connected between the SMU controller and rectifier subrack. 2. Extract rectifiers one at a time to isolate whether a specific damaged module transceiver is locking the entire bus. 3. Measure resistance between CAN_H and CAN_L with system de-energized (nominal value should be ~60 ohms across two parallel 120-ohm resistors); replace harness or backplane if shorted.
SPD_FAIL (Surge Protective Device Failure)
SPD physical inspection window turned from green to red; SMU ALM yellow LED on, DI dry contact triggered
High-energy lightning surge or transient overvoltage triggered metal oxide varistor (MOV) thermal degradation and mechanical disconnection.
1. Inspect the visual status windows on AC/DC SPD blocks to identify which cartridge has turned red. 2. Verify the SPD auxiliary dry contact signaling cable is securely plugged into the SMU signal port. 3. Disconnect the SPD auxiliary branch fuse/breaker, pull out the blown plug-in cartridge, and install an authentic replacement module.

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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