Q: How does the ZXDU68 B201 ensure resilience against harsh ambient conditions and manage dual-stage Low Voltage Disconnect (LVD)?

Operating reliably from -25°C to +55°C (with derating up to +65°C), the ZXDU68 B201 features intelligent stepless speed-controlled fans with an optimized airflow channel, meeting IP20 enclosure standards. AC input surge protection is rated at Class C (nominal In=20kA, maximum Imax=40kA, 8/20μs). For battery management, the system integrates a dual-stage LVD architecture: Load Low Voltage Disconnect (LLVD, default 44VDC) sheds non-critical transmission lines first, while Battery Low Voltage Disconnect (BLVD, default 43.2VDC) isolates the battery bank before destructive deep-discharge occurs, enabling automated stepped recovery.

Question 1

What are the core electrical input/output specifications and conversion efficiency of the ZTE ZXDU68 B201 system and its ZXD3000 rectifiers?

Accepted Answer

The ZXDU68 B201 delivers a nominal output of -48VDC (adjustable from -42VDC to -58VDC) and accommodates up to four ZXD3000 (50A/3000W) rectifier modules, achieving a maximum capacity of 200A. It supports Three-phase 380VAC or Single-phase 220VAC input across an ultra-wide voltage window of 80VAC to 300VAC. The system delivers full output power within 176VAC–300VAC and enters linear derating below 176VAC to prevent AC grid overload. The high-efficiency ZXD3000 module achieves peak conversion efficiency exceeding 96%, with a Power Factor (PF) ≥ 0.99 and THD ≤ 5%, significantly reducing telecom site energy dissipation and heat rejection loads.

Question 2

What engineering advantages does the ZXDU68 B201 offer regarding rack integration, hot-swap expansion, and current-sharing control?

Accepted Answer

The ZXDU68 B201 utilizes a standard 19-inch embedded subrack design with compact depth, easily integrating into telecom cabinets. Rectifier slots support live hot-swapping and blind-mating, reducing MTTR to under 3 minutes. The ZXD3000 modules utilize autonomous active current-sharing circuitry with an imbalance margin of < 5%, ensuring balanced operation even in the event of an independent controller outage. The centralized supervisory unit provides an FE port supporting SNMP v1/v2c/v3 and Web GUI, RS485 interfaces, and configurable dry contacts for native integration with site monitoring units (FSUs) and third-party OSS platforms.

Question 3

How does the ZXDU68 B201 ensure resilience against harsh ambient conditions and manage dual-stage Low Voltage Disconnect (LVD)?

Accepted Answer

Operating reliably from -25°C to +55°C (with derating up to +65°C), the ZXDU68 B201 features intelligent stepless speed-controlled fans with an optimized airflow channel, meeting IP20 enclosure standards. AC input surge protection is rated at Class C (nominal In=20kA, maximum Imax=40kA, 8/20μs). For battery management, the system integrates a dual-stage LVD architecture: Load Low Voltage Disconnect (LLVD, default 44VDC) sheds non-critical transmission lines first, while Battery Low Voltage Disconnect (BLVD, default 43.2VDC) isolates the battery bank before destructive deep-discharge occurs, enabling automated stepped recovery.

Key specifications	Value
Nominal Output Voltage	VDC
Nominal Output Voltage	VDC
Output Voltage Range	-42 to -58 VDC
Output Voltage Range	-42 ~ -58 VDC
System Output Capacity	A
Rated System Capacity	A
AC Input Voltage	80 - 300 VAC
AC Input Voltage Range	80 ~ 300 VAC
Input Grid Type	Three-phase 380V / Single-phase 220V
Grid Frequency Range	45 - 66 Hz
System Comprehensive Efficiency	≥ 96.5 %
Rectifier Module Model	ZXD3000 (50A)
Power Conversion Efficiency	96.3 %
Output Power Factor PF	≥ 0.99
Total Harmonic Distortion (THD)	≤ 5 %
Operating Temperature	-25 ~ +55 °C
Ingress Protection (IP Rating)	IP20
Compatible Rectifier Model	ZXD3000 (50A)
Operating Temperature	-25 to +55 °C
Communication & Network Ports	RS485, FE (SNMP), Dry Contacts
Low Voltage Disconnect (LVD)	Dual Stage (LLVD + BLVD)
Relative Humidity	5 - 95 %RH
Cooling Method	Forced Air Cooling (intelligent air cooling)
Communication Interfaces	RS485, Ethernet (SNMP), Dry Contacts
Rated Output Current	A
Rectifier Slot Capacity	Slots
Rectifier Unit Capacity	A
AC Input Voltage Range	80 ~ 300 VAC
Output Power Factor PF	≥ 0.99

ZTE ZXDU68 B201 Embedded DC Power System -48V 200A (4-Slot ZXD3000)

What this product is

What this product is

What problem it solves

Who and where it is for

Core advantages

Technical specifications

Applications

4G/5G cellular macro base stations and indoor equipment shelters

Metropolitan transmission nodes and fiber optical hub sites

Industrial enterprise networks and railway signaling DC power rooms

Frequently asked questions

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