Technical specifications

PRAM AC Power Module (for ZXA10 C320 OLT)

Product Model: PRAM

Product Type: AC-to-DC Power Supply Module / Power Interface Board

Compatible Platform:  ZXA10 C320 Compact OLT Chassis

 

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1. Product Overview

The PRAM is a carrier-grade, high-efficiency AC-DC power module designed exclusively for the ZXA10 C320 2U compact OLT. It converts universal 110V/220V AC mains power into a stabilized -48V DC output to power the entire OLT chassis, including control boards, service boards, and uplink modules. Featuring hot-swappable design, 1+1 power redundancy, and comprehensive protections, the PRAM ensures reliable, uninterrupted power for FTTH, FTTB, and enterprise access networks where standard DC power infrastructure is unavailable.

 

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2. Key Specifications

Electrical Parameters

• Input Voltage: 100V–240V AC (auto-adaptive, single-phase)
• Input Frequency: 50/60 Hz (45–65 Hz tolerance)
• Output Voltage: -48V DC (nominal, adjustable -42V to -57V DC)
• Max Output Power: 320W
• Max Output Current: 6.7A (at -48V DC)
• Self Power Consumption: 13.2W (low idle power)
• Efficiency: >90% (at full load)
• Power Factor: ≥0.95 (active PFC)

Physical & Mechanical

• Dimensions (H × W × D): 200.25 × 37 × 225 mm
• Weight: 1.346 kg
• Mounting: Horizontal installation in C320 slots 0/1
• Cooling: Forced air cooling (chassis fan)
• Hot-Swappable: Yes (online replacement)

Interfaces & Ports

• AC Input: 1 × IEC C14 AC power socket
• Battery Interface: 1 × DC terminal block (for backup battery)
• Temperature Sensor: 1 × interface for battery temp compensation
• COM/DEBUG: 1 × RJ45 (RS-232)

LED Indicators

• RUN (Green): Slow blink = normal; Solid = self-test OK; Off = fault
• ALM (Red): On = hardware fault; Blink = abnormal status
• PWR (Green): AC input & DC output normal

Protection Features

• Over-Voltage Protection (OVP)
• Under-Voltage Protection (UVP)
• Over-Current & Short-Circuit Protection
• Over-Temperature Protection (OTP)
• Surge/Lightning Protection (±6kV)
• Reverse Polarity Protection
• EMI Filtering & EMC Compliance

System Features

• Redundancy: 1+1 power redundancy (dual PRAM boards)
• Load Balance: Automatic load sharing (dual inputs)
• Battery Management: Charging/discharging control
• Real-Time Monitoring: Voltage, current, temp detection
• Alarm: Input/output fault, over-temperature alarms

Environmental Specifications

• Operating Temperature: -40°C ~ +65°C
• Storage Temperature: -40°C ~ +85°C
• Humidity: 5% ~ 95% (non-condensing)
• Altitude: Up to 4,000 m
• EMC: Complies with IEC 61000-3-2, telecom standards

 

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3. Core Features

• Universal AC Input: 100–240V AC for global deployment.
• High-Efficiency Conversion: >90% efficiency, low heat, energy-saving.
• Active PFC: Power factor ≥0.95, reduces grid harmonics.
• Carrier-Grade Reliability: Full protections, redundant design, 99.999% uptime.
• Hot-Swappable: Maintenance without OLT shutdown.
• Battery Backup Support: Integrated charge/discharge management.
• Compact & Lightweight: Fits 2U C320 chassis, space-saving.
• Smart Monitoring: Real-time telemetry & fault alarms.
• Wide Temp Range: Operates in extreme environments (-40°C to +65°C).

 

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4. Typical Applications

• ZXA10 C320 OLT main power supply
• FTTH/FTTB triple-play networks
• Remote cabinets & outdoor OLT deployments
• Enterprise/campus fiber access
• Sites without -48V DC power infrastructure
• Battery-backed AC-powered telecom sites