Q: How does the ETP48300-C9A1 manage rectifier module interoperability, active current sharing, and SMU02B/SMU02C monitoring integration?

The ETP48300-C9A1 subrack accommodates hot-swappable 50A Huawei rectifiers (e.g., R4850G2, R4850N2) using autonomous CAN-bus active current sharing with <±5% imbalance, ensuring N+1/N+2 redundancy without single-point failures. Coupled with the SMU02B or SMU02C controller via internal high-speed buses, it exposes northbound FE, RS485, and SNMP v2/v3 protocols for real-time telemetry. The platform natively orchestrates both VRLA and lithium batteries (such as Huawei ESM series), supporting multi-vendor BMS handshake and staged load shedding.

Q: What environmental tolerance, surge suppression (SPD), and Low Voltage Disconnect (LVD) safeguards are engineered into the ETP48300-C9A1?

Engineered for harsh telecommunication conditions, the ETP48300-C9A1 operates between -40°C and +65°C (linear derating above 55°C) with speed-controlled forced-air cooling in each module. It incorporates Class C/D AC surge protection (nominal 20kA, max 40kA 8/20μs) and dedicated DC surge suppression. The distribution section features independent LLVD (Load Low Voltage Disconnect) and BLVD (Battery Low Voltage Disconnect) contactors, systematically disconnecting non-critical loads prior to complete battery cut-off to extend runtime for critical telecom equipment.

Question 1

What are the core electrical specifications, input grid compatibility, and efficiency metrics of the Huawei ETP48300-C9A1?

Accepted Answer

The Huawei ETP48300-C9A1 (SKU: HW-SYS-ETP48300-C9A1) is a 3U subrack power system featuring 6 × 50A rectifier slots delivering up to 300A (17.4 kW) nominal output across an adjustable range of -42V DC to -58V DC (nominal -48V DC). The system natively supports both 380V/415V 3-phase (4-wire) and 200V/220V/240V 1-phase AC input (85VAC to 300VAC operational phase voltage). Compatible with high-efficiency rectifiers such as the R4850G2 (peak efficiency >96%, PF ≥0.99, THD <5%), it minimizes heat dissipation and OPEX in 5G convergence sites and edge mini-datacenters.

Question 2

How does the ETP48300-C9A1 manage rectifier module interoperability, active current sharing, and SMU02B/SMU02C monitoring integration?

Accepted Answer

The ETP48300-C9A1 subrack accommodates hot-swappable 50A Huawei rectifiers (e.g., R4850G2, R4850N2) using autonomous CAN-bus active current sharing with <±5% imbalance, ensuring N+1/N+2 redundancy without single-point failures. Coupled with the SMU02B or SMU02C controller via internal high-speed buses, it exposes northbound FE, RS485, and SNMP v2/v3 protocols for real-time telemetry. The platform natively orchestrates both VRLA and lithium batteries (such as Huawei ESM series), supporting multi-vendor BMS handshake and staged load shedding.

Question 3

What environmental tolerance, surge suppression (SPD), and Low Voltage Disconnect (LVD) safeguards are engineered into the ETP48300-C9A1?

Accepted Answer

Engineered for harsh telecommunication conditions, the ETP48300-C9A1 operates between -40°C and +65°C (linear derating above 55°C) with speed-controlled forced-air cooling in each module. It incorporates Class C/D AC surge protection (nominal 20kA, max 40kA 8/20μs) and dedicated DC surge suppression. The distribution section features independent LLVD (Load Low Voltage Disconnect) and BLVD (Battery Low Voltage Disconnect) contactors, systematically disconnecting non-critical loads prior to complete battery cut-off to extend runtime for critical telecom equipment.

Key specifications	Value
Nominal DC Output Voltage	-48 V DC
Physical Dimensions Spec	130 (3U) × 442 × 360 mm
Operating Temperature	-40 ~ +65 °C
System Output Capacity	A
Rectifier Module Slots	6 × 50A Slots
AC Input Mode	380V 3-Phase / 220V 1-Phase Compatible
System Monitoring Controller	SMU02B / SMU02C

Huawei ETP48300-C9A1 Large-Capacity Embedded DC Power System -48V 300A Subrack

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What this product is

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5G Wireless Aggregation Macro Sites

Central Optical Fiber Transmission Offices

Containerized Modular Edge Data Centers

Railway Traction Control & Signalling Rooms

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