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Eltek / Power management

252189 Subrack Power System Equipment information & support

The Eltek 252189 is an embedded 19-inch 2U subrack DC power system engineered for telecom and core networking, integrating Flatpack2 rectifier slots, Smartpack controller interface, and integrated AC/DC distribution.

Equipment information

Brand
Eltek
Equipment model
252189 Subrack Power System
Equipment type
Power management
Controller / software version
Confirm against the installed equipment
View full product specifications
Eltek 252189 Subrack Power System Official White Background Photo View 1

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

Smart Monitoring Controller
Smartpack2 / Smartpack S Controller Slot
AC Input Voltage Range
85VAC ~ 300VAC (Nominal 220V/380VAC) VAC
Cooling Method
Independent module air cooling & rack straight duct
Nominal Output Voltage
-48VDC VDC
Managed Rectifier Capacity
4 × Flatpack2 48/2000 HE / 48/3000 HE Slots
Rated Output Current
200A (Subrack Capacity 11.6kW)

Alarms & troubleshooting

RECT_COMM_FAIL
Controller Major LED Solid Amber; Rectifier Communication LED Flashing Yellow
Smartpack controller lost consecutive CAN heartbeat frames from the specific Flatpack2 slot, indicating an unseated module, damaged backplane pins, or transceiver failure.
1. Verify the rectifier handle is fully seated and locked; 2. Withdraw module and inspect backplane blind-mate pins for mechanical damage; 3. Execute a CAN node rescan in Smartpack; 4. Swap slot to isolate rectifier failure from backplane bus trace defects.
MAINS_VOLT_FAULT
System Controller Critical LED Solid Red; Rectifier AC Input Green LEDs OFF
Total AC mains outage or AC phase voltage drifted out of limits (<85VAC or >300VAC); subrack is operating entirely on battery reserve.
1. Measure input phase voltage and frequency at the upstream AC breaker; 2. Inspect the AC surge protection device (SPD) window for fault indications; 3. Monitor battery remaining capacity and dispatch emergency mobile generator if needed.
BATT_BLVD_WARN
Controller Critical LED Rapid Red Blinking; Buzzer Sounding Continuously
Extended AC outage leading to battery depletion; DC bus has dropped to the pre-BLVD threshold (e.g., ≤43.5VDC) and total service interruption is imminent.
1. Connect an immediate emergency DC source or portable generator to the subrack; 2. Ensure LLVD contactor has already isolated non-priority circuits; 3. Prepare for controlled boost charging sequence once AC input is restored.
BATT_OVER_TEMP
Controller Major LED Solid Red; Battery Sensor Channel Alarm Active
Battery temperature probe registered battery case or ambient cell temperature above safety trip threshold (typically >50°C), risking thermal runaway.
1. Inspect battery compartment ventilation and climate control equipment; 2. Check battery jar blocks for swelling, electrolyte leakage, or hot terminals; 3. Reduce controller float target voltage to suppress charging current and halt thermal progression.
DC_VOLT_LOW
Controller Major LED Solid Yellow; LCD Displays DC Voltage Low Warning
DC distribution busbar voltage has dipped below the configured warning threshold (typically 47.0VDC), caused by insufficient rectifier capacity, overload current-limiting, or ongoing battery discharge.
1. Verify total connected DC load current against the combined active capacity of operating rectifiers; 2. Inspect rectifiers for internal faults or tripped breakers; 3. Install additional Flatpack2 modules into vacant slots to handle expanded load demand.

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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