Emergency Lighting Units For LED Lamps with External Drivers

HEL Series

Emergency Lighting Units - HEL Series


  • Micro-processor controlled self-contained emergency lighting units for LED lamps with external drivers
  • Built-in micro-controller for smart operations
  • Maintained and non-maintained modes
  • Lamp output short-circuit, over-current and open-circuit protections
  • Deep-discharge shutdown for battery protection
  • High efficient switching mode charger with short-circuit and over-current protections
  • Dual rate charging, pulse charging when battery full
  • Isolated low voltage test switch
  • Bi-colour LED indicators
  • NiCd rechargeable battery, NiMH as option
  • Can fit in standard battens directly

Electrical Characteristics

Rated supply voltage 220-240 VAC (-10%, +10%)
Supply frequency 50-60 Hz
Changeover time <0.3 Sec
Recharge time <12 hrs
Battery cut-off voltage <1.0V/cell
Ambient temp (ta) 0 … +50°C
Max. case temp (tc) 70°C
Weight 1.2 kg

Recharge Hours

Max Discharge Hour Supported

Micro-Controller Controlled Operations

Unlike traditional products, the system is operated smartly with a micro-controller and its software. These include

  • Battery charging
  • Discharging
  • System changeover
  • Various fault protections for LED lamp
  • Various fault protections for charger
  • Multiple LED indications

LED Indications

The infrared remote control makes battery change-over testing is easier with just a press on the controller. It also provide 5-steps of dimming control for normal AC operation.

green-led-on-off Battery Charging
green-led-on-on Battery Full
red-led-on-on Battery Discharging
red-led-on-off System Errors

Maintained Mode

Wiring Diagrams

Non-maintained Mode


Hoye LED Driver Case 176


FSD Circular Letter No. 1/2006: PPA-104(A) 5th Rev Fire Safety Standards for Emergency Lighting

BS 5266 part 1 2016 Emergency lighting. Code of practice for the emergency lighting of premises

EN 1838 2013 Lighting applications. Emergency lighting

EN 61347-2-13 Lamp controlgear. Particular requirements for d.c. or a.c. supplied electronic controlgear for LED modules

EN 61951-1 Secondary cells and batteries containing alkaline or other non-acid electrolytes – Portable sealed rechargeable single cells – Part 1: Nickel-cadmium

EN 55015 Limits and methods of measurement of radio disturbance characteristics of electrical lighting and similar equipment

EN 61000-3-2 Electromagnetic compatibility (EMC). Limits. Limits for harmonic current emissions (equipment input current ≤ 16 A per phase)

EN 61000-3-3 Electromagnetic compatibility (EMC). Limits. Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current ≤ 16 A per phase and not subject to conditional connection

EN 61547 Equipment for general lighting purposes. EMC immunity requirements

Ordering Information

Model Lamp
Max. Lamp
Battery Discharge
HEL-050-42-2 50 42 H10A10 (12V, 1Ah) 2
HEL-050-42-3 50 42 H10A10 (12V, 1Ah) 3
HEL-100-42-2 100 42 H10S20F (12V, 2Ah) 2
HEL-100-42-3 100 42 H10S20F (12V, 2Ah) 3
HEL-150-42-3 150   H10S20F (12V, 3Ah) 2
HEL-150-42-3 150   H10S20F (12V, 3Ah) 3