Elmdene 7422-sfg-g3f Manual !!top!!
| LED D1 (Green) – Mains Present | LED D2 (Yellow/Amber) – Status | Meaning | | :--- | :--- | :--- | | ON (steady) | OFF | Normal AC operation, battery float charging. | | ON (steady) | ON (steady) | AC present, but battery is charging (high current). | | OFF | ON (flashing) | Mains fail – unit on battery backup. | | OFF | OFF | No power (check fuses or mains input). | | ON (flashing) | ON (flashing) | Battery fault – high internal resistance or open circuit. |
When dealing with critical security infrastructure, particularly in access control and fire alarm integration, the reliability of your power supply is non-negotiable. The Elmdene 7422-SFG-G3F is a market-leading, high-specification linear power supply and charger, widely used in the UK and Europe for its robust performance. However, to harness its full potential—and to ensure compliance with British Standards (BS EN 62368-1) and fire safety codes—you need the Elmdene 7422-SFG-G3F manual . elmdene 7422-sfg-g3f manual
A: Unlike switch-mode supplies, linear units use a heavy iron transformer. The manual notes that linear supplies produce less electrical noise, making them superior for fire alarms and analogue access control readers. | LED D1 (Green) – Mains Present |
When in doubt, isolate power, discharge capacitors (the manual shows how using a 10kΩ resistor), and consult a qualified electrician or security engineer. | | OFF | OFF | No power (check fuses or mains input)
| Parameter | Value | | :--- | :--- | | | 230V AC ±10% (50/60 Hz) | | Output Voltage (Nominal) | 13.8V DC (float charge) | | Output Current (Continuous) | 3A | | Current (Intermittent/Peak) | 4.5A (for 5 minutes, door strikes) | | Ripple & Noise | < 50mV peak-to-peak | | Battery Charging Capability | 7Ah (12V lead-acid or gel) – Up to 12Ah with derating | | Operating Temperature | -10°C to +50°C | | Enclosure Type | IP30 (Indoor use only) | | Fuse Ratings | Primary: T1.6A L (slow blow); Output: Glass 3.15A; Battery: Glass 3.15A |