Premier Power Pack EN-54 24V Power Supply with LCD Screen
Summary
The Zeta Premier Power Pack is an EN54-4 certified power supply featuring an innovative LCD screen that provides engineers with real-time visibility of system status. Available in two models (PP-2/12 and PP-5/17), this intelligent power supply displays critical parameters including output voltage and current directly on the front panel.
The power supply incorporates advanced battery management through a 3-state charging system that automatically switches between BOOST, FLOAT, and PULSE modes depending on battery condition. This intelligent charging optimises battery life and ensures reliable standby power for fire alarm systems.
Battery protection is built into the design, with the PSU automatically disconnecting batteries during mains failure when they reach full discharge, preventing damage and extending battery lifespan. The unit also continuously monitors for high internal resistance, signalling a fault when detected to ensure system integrity.
Features
- On-board LCD screen displays system status and power parameters
- EN54-4 certified for fire alarm applications
- 3-state intelligent charger with BOOST, FLOAT and PULSE modes
- Automatic battery disconnect protection during mains failure
- Battery impedance monitoring with high resistance fault detection
- 2 fused power supply outputs
- Fault relay for system integration
- IP30 rated enclosure
- Available in 2.0 Amp and 5.0 Amp variants
- Wide input voltage range (170-264V AC)
FAQ
What does the LCD screen display?
The LCD screen provides multiple information screens showing system status, output voltage and current, battery information including impedance and charge state, earth fault monitoring, charger status and software version information.
What is the difference between the PP-2/12 and PP-5/17 models?
The PP-2/12 provides 2.0 Amp total output with 75W power rating and 79% efficiency, whilst the PP-5/17 offers 5.0 Amp total output with 150W power rating and 86% efficiency. The PP-5/17 is also slightly larger to accommodate the increased power capacity.
How does the 3-state charger work?
The intelligent charger automatically switches between three modes: BOOST mode for rapid charging of depleted batteries, FLOAT mode for maintaining fully charged batteries, and PULSE mode for long-term battery conditioning. The PSU selects the appropriate mode based on battery condition.
What battery protection features are included?
The PSU monitors battery impedance to detect high internal resistance and will signal a fault if detected. During mains failure, the unit automatically disconnects batteries when fully discharged to prevent damage. The battery charger is also temperature compensated to optimise charging.
What is the output voltage?
Both models provide 28V DC nominal output voltage, which is standard for fire alarm system applications.
Can the power supply outputs be configured independently?
Yes, the unit provides 2 independently fused outputs allowing flexible configuration for different system loads and circuit protection requirements.
Specifications
- Model: PP-2/12 / PP-5/17
- Part Number: 46-300 / 46-305
- Input Voltage: 170-264V AC 47-63 Hz
- Output Voltage: 28V DC Nominal
- Power Rating: 75W / 150W
- Efficiency: 79% / 86%
- Total Power Output: 2.0 Amp / 5.0 Amp
- Power Supply Outputs: 2 Fused Outputs
- Maximum Current Per Output: 0.625A / 2.0 Amps
- Battery Charging Current: 750mA / 920mA
- Fault Relay Rating: SELV 1A
- IP Rating: IP30
- Dimensions: 375 x 335 x 128mm / 375 x 403 x 128mm
- Certification: EN54-4 Certified
Additional information
| Weight | 4 kg |
|---|---|
| Device Type | |
| Output | 2A, 5A |