Q: What protection mechanisms and industrial hardening are integrated into the ETP48100-B1 for harsh grids and extreme temperatures?

Engineered for harsh telecom edge deployments, the ETP48100-B1 operates across -40°C to +75°C (linear derating above +55°C). The AC input incorporates surge protection (differential mode 2kV, common mode 4kV, expandable to 20kA, 8/20µs with external SPD), alongside overvoltage self-shutdown withstanding continuous line surges up to 415VAC. Thermal management utilizes stepless variable-speed fan cooling. For battery protection, it features polarity reversal protection, precision temperature-compensated float/equalize charging, and SMU02C monitoring over SNMP v3/HTTPS/dry contacts, safeguarding mission-critical loads against severe grid instability.

Question 1

What are the core electrical output specifications and conversion efficiency metrics of the Huawei ETP48100-B1?

Accepted Answer

The Huawei ETP48100-B1 is engineered in a 1U 19-inch subrack delivering a nominal -48VDC output (adjustable between -42VDC and -58VDC) with a maximum current of 100A and output power up to 6000W. Accommodating 2 rectifier slots, it supports R4850G2 ultra-high-efficiency modules (peak efficiency ≥96%) and R4850N1 standard modules (≥94%). The system supports an ultra-wide AC input range of 85VAC to 300VAC (rated 220VAC single-phase or 110VAC dual-phase), delivering continuous 100A full load at 176VAC–300VAC. It features a power factor (PF) ≥0.99, Total Harmonic Distortion (THD) ≤5%, and output ripple/noise under 200mVp-p, fully satisfying high-density telecom transmission and RAN deployment requirements.

Question 2

Does the ETP48100-B1 support hot-swapping and mixed rectifier module usage? What are its load-sharing and distribution mechanisms?

Accepted Answer

The ETP48100-B1 provides native hot-swap capabilities for all R4850 series rectifier modules, integrated with the SMU02C monitoring unit via internal CAN-bus auto-discovery. It implements active current sharing with module unbalance <±5% to eliminate single-point overload. While physical and protocol backward compatibility permits mixed insertion of R4850G2 and R4850N1, deployment with identical models and firmware is recommended to maintain peak operational efficiency. The DC distribution incorporates two-stage Low Voltage Disconnect logic (LLVD for secondary shedding and BLVD for battery deep-discharge protection) via integrated high-reliability breakers.

Question 3

What protection mechanisms and industrial hardening are integrated into the ETP48100-B1 for harsh grids and extreme temperatures?

Accepted Answer

Engineered for harsh telecom edge deployments, the ETP48100-B1 operates across -40°C to +75°C (linear derating above +55°C). The AC input incorporates surge protection (differential mode 2kV, common mode 4kV, expandable to 20kA, 8/20µs with external SPD), alongside overvoltage self-shutdown withstanding continuous line surges up to 415VAC. Thermal management utilizes stepless variable-speed fan cooling. For battery protection, it features polarity reversal protection, precision temperature-compensated float/equalize charging, and SMU02C monitoring over SNMP v3/HTTPS/dry contacts, safeguarding mission-critical loads against severe grid instability.

Key specifications	Value
System Output Capacity	100A (-48VDC)
Physical Form Factor	1U rack-mounted (19-inch standard mounting)
Rectifier Module Slots	2 Slots (Supports R4850G2 / R4850N1)
Controller Unit	SMU02C (supports LCD display and network SNMP)
AC Input Type	220VAC single-phase / 110VAC dual live-wire
DC Distribution Branches	Multiple fused/miniature circuit-breaker branches (supports priority/non-priority disconnection)

Huawei ETP48100-B1 1U Embedded Telecom DC Power System 100A

What this product is

What this product is

What problem it solves

Who and where it is for

Core advantages

Technical specifications

Applications

Telecom macro and indoor distribution sites

Edge computing and aggregation facilities

Railway transport and industrial command centers

Frequently asked questions

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