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Delta / DC Power Systems (-48V)

DPR4850-G-DGC Equipment information & support

The Delta DPR4850-G-DGC is an advanced high-efficiency telecom rectifier delivering -48V 50A (2900W) with a gold-finger blind-mate interface, boasting >96% peak efficiency for carrier green energy targets.

Equipment information

Brand
Delta
Equipment model
DPR4850-G-DGC
Equipment type
DC Power Systems (-48V)
Controller / software version
Confirm against the installed equipment
View full product specifications
Delta DPR4850-G-DGC Telecom Power Rectifier Module (48V 50A 2900W High Efficiency) - 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 VA / Wattage
2900W Power Density
AC Input Voltage
85V - 300V AC Wide Ingestion
Backplane Connector Interface
Heavy-Duty Gold-Plated Blind-Mate
Rated DC Output Current
-48VDC (-42V ~ -58V)
Nominal DC Output Voltage
-48VDC (-42V ~ -58V)
Peak Energy Efficiency
≥ 95.5%

Alarms & troubleshooting

AC_IN_FAIL / VOLT_ABNORMAL
Input Amber LED blinking, module in standby protection mode
Utility input voltage outside operating limits (<85VAC or >300VAC) or internal input fuse open
1. Measure AC line-to-neutral voltage at the module slot with a multimeter;\n2. Inspect corresponding subrack AC input circuit breaker status;\n3. If grid voltage is normal, extract module and examine rear gold-finger pins;\n4. Reseat into an adjacent empty slot to rule out backplane connector faults.
DC_OV_SHUTDOWN / LOCKOUT
Alarm Red LED solid, module output locked out with 0V DC
Internal voltage feedback loop fault caused output to exceed HW threshold (>59.5V), or external bus backfeed
1. Measure actual DC bus voltage to ensure no external overcharging backfeed;\n2. Open AC supply breaker and allow 60 seconds for internal capacitors to discharge;\n3. Power-cycle module; if red lockout recurs immediately, replace rectifier unit.
FAN_FAIL / OVER_TEMP
Temperature Amber LED solid, cooling fan halted or output power derated
Air filter clogged with dust, cooling fan bearing seized, or ambient temperature exceeds +75°C
1. Clear accumulated dust and debris from front ventilation slots and mesh;\n2. Inspect fan blades for mechanical obstruction and verify spin-up on boot;\n3. Check cabinet ventilation airflow and ambient air-conditioning operation;\n4. If fan remains stalled, replace with genuine speed-regulated brushless DC fan.

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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