RFI sm240-12-20 Power Supply

1. Specification
2. Application
3. RFI Resellers in Brisbane
4. User Manual

The sm240-12-12 Power supply is specifically designed to charge lead acid 12 volt batteries and maintain a float charge.

Specification

• Input Voltage Vac (Hz) 200-265 (50)
• Output Voltage V adjustable 12.0 - 14.0
• Output Ripple Voltage mVp-p less than 40
• Output Current A 20
• Over Voltage Protection V 16
• Load Regulation 1 ±2% from set point taking into account all of line and load regulation and temperature coefficient when load powered by power supply
• Load Regulation 2 +0-2% of battery terminal voltage when load powered by battery
• Output Power 280W
• Dimensions H=224 x W=59 x D=151 (excl. protusions)
• Efficiency 85%
• Battery Charging Algoritum Float with 15min every 24hr boost
• Battery Charge Current Max 10A
• Battery Disconnect 10.5V
• Battery Reconnect greater than 11.9V ±0.3
• Battery Hysteresis typically 1.5V
• Battery Fuse Electronic
• Operating Environment 0-50°C Ambient Fan Forced thermally controlled
• Alarm Closed contact 60V @ 0.2A
• Weight 1.5Kg
• Compliance AS3260, AS3548, ACA, EMC, C-Tick Mark
• Supplied with Instruction sheet, 2m 240VAC IEC cable, DC/Battery connector

Application

Two of these 20 ampere power in parallel to charge two 100Ah sealed lead acid batteres as the emergency power suppy for the Mt Cotton Radio Station, VK4RBD. The is the schematic of DC distribution as drawn by VK4DCM 13 February 2019:

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RFI Resellers in Brisbane

• Commex Communications – Windsor – 07 3357 7122
• Olbis – Rocklea – 07 3875 1155
• RF Comms – Brassall – 07 3201 7994

User Manual

Note: A pair of normally closed, floating relay contacts are provided to indicate a fault condition. See this manual fo r more details. This relay clould be monitored as part of the Remote Radio Control Application.

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