7422-sfg-g3f Manual - Elmdene

The manual opens with a critical specifications table. Before installation, verify these against your system requirements:

| Parameter | Value | | :--- | :--- | | Input Voltage | 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 | elmdene 7422-sfg-g3f manual

Expert note from the manual: Do not exceed a 7Ah battery if the unit is mounted in a high ambient temperature above 40°C, as this reduces battery life and risks thermal shutdown. The manual opens with a critical specifications table

Q: Can I use this with a 12Ah battery? A (from manual): Yes, but only if the load is <2A average. The charge current (0.5A) will take over 24 hours to recharge a 12Ah battery. Also, the enclosure does not physically fit a 12Ah – you’d need an external battery box (EN 60950-1 compliant). A (from manual): Yes, but only if the

Q: Why is this called a “linear” supply? 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.

Q: Is the Elmdene 7422-SFG-G3F compliant with the latest fire standards? A: Yes – it is certified to EN 62368-1 (the successor to EN 60950-1). For fire alarm use, you must enable the “Fire Override” input as detailed in Appendix A of the manual.

The output terminals are where you connect your security devices (locks, cameras, etc.).