Question 1

What are the core electrical output capabilities, conversion efficiency, and AC input tolerances of the Vertiv NetSure 2100 A31-S2 DC power system?

Accepted Answer

The Vertiv NetSure 2100 A31-S2 (SKU: VERTIV-SYS-NS2100-A31-S2) is an ultra-compact 19-inch subrack DC power system designed for telecom and edge sites. Equipped with 3 rectifier slots supporting R48-1000e3 and R48-2000e3 modules, it delivers a total rated output of 120A at -48VDC (adjustable range: -42 to -58VDC). It achieves a peak efficiency of >95.5% with THD ≤5% and a power factor ≥0.99. The AC input spans an ultra-wide range of 85Vac to 300Vac (single-phase/two-phase compatible), providing full load between 176–300Vac and linear derating between 85–175Vac to withstand severe utility voltage fluctuations.

Question 2

Which rectifier configurations are supported, and how does the system manage current sharing alongside the M221S/M222S supervisory units?

Accepted Answer

The NetSure 2100 A31-S2 subrack features a hot-swappable architecture with 3 slots accommodating Vertiv R48-1000e3 (20A) or R48-2000e3 (40A) rectifiers. The modules utilize autonomous CAN-bus digital active current sharing with unbalance under ±3%, preventing circular currents during parallel operation. Managed by M221S or M222S supervisory controllers, the system executes precision temperature-compensated charging, cyclic boost/float charging, and real-time load management. Integration with telecom OSS/NMS networks is established via SNMP and RS485 interfaces, with support for intelligent module redundancy and energy-saving sleep cycles.

Question 3

What are the operating temperature tolerances, lightning protection levels, and Low Voltage Disconnect (LVD) parameters of the NetSure 2100 A31-S2?

Accepted Answer

Rated at IP20, the NetSure 2100 A31-S2 operates reliably within an ambient temperature span of -40°C to +75°C (full output up to +45°C with linear thermal derating up to +75°C). The AC input incorporates integrated Surge Protective Devices (SPD, nominal discharge current In ≥10kA, Imax ≥20kA, 8/20μs waveform), while DC rails are protected against transients. The integrated DC power distribution supports dual-stage LVD architecture: LLVD (Load Low Voltage Disconnect, default ~-44VDC) for non-critical shed and BLVD (Battery Low Voltage Disconnect, default ~-43.2VDC) to safeguard connected VRLA or LiFePO4 battery banks from catastrophic deep-discharge damage.

Key specifications	Value
System Output Capacity	120 A
Nominal Output Voltage	-48 VDC
Output Voltage Range	-42 ~ -58 VDC
AC Input Voltage Range	85 ~ 300 VAC (single-phase/two-phase compatible)
Rectifier Module Slots	3 Slots (Supports R48-1000e3 / R48-2000e3)
System Monitoring Controller	M221S / M222S intelligent comprehensive monitoring unit
System Comprehensive Efficiency	> 95.5%
Ingress Protection (IP Rating)	IP20 (indoor embedded installation)
Physical Dimensions Spec	88 × 482 × 330 mm (2U 19-inch)
Operating Temperature	-40°C to +70°C

Vertiv NetSure 2100 A31-S2 Embedded DC Power System -48V 120A

What this product is

What this product is

What problem it solves

Who and where it is for

Core advantages

Technical specifications

Applications

Wireless base station shelters

Broadband access networks

Railway communication nodes

Industrial IoT aggregation sites

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