Q: Which power shelf architectures are compatible with the Flatpack2 48/2000 HE, and does it support hot-swap expansion and current sharing with legacy modules?

Designed in a 1U form factor (41.5 × 109 × 327 mm), the Flatpack2 48/2000 HE integrates seamlessly into Eltek 19-inch 1U/4U shelves, Flatpack2 Modular subracks, and PowerCore systems. It natively supports hot-swapping and communicates via CAN bus with Smartpack, Smartpack2, and Smartpack S controllers for automated slot assignment and active digital current sharing (< 5% imbalance). It can coexist on the same DC bus with legacy standard-efficiency Flatpack2 48/2000 modules for phased upgrades, though deploying uniform HE modules is recommended for optimized load balancing and thermal profile symmetry.

Q: What are the environmental tolerance specs and thermal/surge protection mechanisms of this rectifier in harsh telecom deployments?

The module operates within an extreme temperature range of -40°C to +75°C (with intelligent linear derating above +45°C to preserve operational integrity). Forced-air front-to-back cooling is managed by an integrated, microprocessor-governed variable-speed DC fan that dynamically matches airflow to internal heat dissipation. Protection measures include Over-Temperature Protection (OTP), Over-Voltage Protection (OVP), short-circuit current limiting, and DC reverse polarity protection. The AC input integrates MOV protection compliant with IEC 61000-4-5 surge standards (2kV DM / 4kV CM), achieving an MTBF exceeding 350,000 hours per Telcordia SR-332.

Question 1

What are the core electrical conversion specifications and rated output metrics of the Eltek Flatpack2 48/2000 HE (ELTEK-REC-FP2-2000-HE)?

Accepted Answer

The Eltek Flatpack2 48/2000 HE rectifier provides a nominal -48V DC output with a rated capacity of 2000W and a maximum continuous current of 41.7A (adjustable from 43.5V to 57.6V DC). Operating on advanced soft-switching topology, it delivers a peak conversion efficiency of 96.5% (High Efficiency standard), a Power Factor (PFC) ≥ 0.99, and THD < 5%. It features a wide AC input range from 85VAC to 300VAC (full 2000W output between 185VAC and 275VAC, with linear derating below 185VAC), substantially reducing facility thermal dissipation and optimizing telecom site PUE.

Question 2

Which power shelf architectures are compatible with the Flatpack2 48/2000 HE, and does it support hot-swap expansion and current sharing with legacy modules?

Accepted Answer

Designed in a 1U form factor (41.5 × 109 × 327 mm), the Flatpack2 48/2000 HE integrates seamlessly into Eltek 19-inch 1U/4U shelves, Flatpack2 Modular subracks, and PowerCore systems. It natively supports hot-swapping and communicates via CAN bus with Smartpack, Smartpack2, and Smartpack S controllers for automated slot assignment and active digital current sharing (< 5% imbalance). It can coexist on the same DC bus with legacy standard-efficiency Flatpack2 48/2000 modules for phased upgrades, though deploying uniform HE modules is recommended for optimized load balancing and thermal profile symmetry.

Question 3

What are the environmental tolerance specs and thermal/surge protection mechanisms of this rectifier in harsh telecom deployments?

Accepted Answer

The module operates within an extreme temperature range of -40°C to +75°C (with intelligent linear derating above +45°C to preserve operational integrity). Forced-air front-to-back cooling is managed by an integrated, microprocessor-governed variable-speed DC fan that dynamically matches airflow to internal heat dissipation. Protection measures include Over-Temperature Protection (OTP), Over-Voltage Protection (OVP), short-circuit current limiting, and DC reverse polarity protection. The AC input integrates MOV protection compliant with IEC 61000-4-5 surge standards (2kV DM / 4kV CM), achieving an MTBF exceeding 350,000 hours per Telcordia SR-332.

Key specifications	Value
AC Input Voltage Range	85VAC ~ 300VAC (Nominal 185~275VAC) VAC
Nominal DC Output Voltage	-48 V DC
Rated Output Power	W
Cooling Method	Front-to-rear airflow cooling with a stepless variable-speed DC fan
Power Conversion Efficiency	%
Physical Dimensions Spec	41.5 (1U) × 109 × 327 mm
Rated Output Current	A

Eltek Flatpack2 48/2000 HE High Efficiency Telecom Rectifier -48V 40A 2000W

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