OUR PUBLICATIONS
DESIGN GUIDES & LEGAL ISSUES
PUBLICATIONS
EMERGENCY CHECKLIST 2018
A comprehensive guide to guarantee quality and consistency. Use this checklist to ensure that all Emergency Lighting standards are met efficiently.
Written by:
S. V. Marais, R. J. Longford, K. M. Pillay
EMERGENCY LIGHTING GUIDE
What is Emergency Lighting and how is it implemented to comply to safety regulations and safe egress of occupants in the event of danger.
Written by:
Stirling V. Marais
EMERGENCY LIGHTING:
LEGAL REQUIREMENTS
Emergency Lighting must comply with these regulations to ensure that building standards are met and for the safety of occupants in the event of danger or power outages.
Written by:
Stirling V. Marais
FIRE CHIEF CHECKLIST:
ISSUE 1
This document provides Fire Chiefs with 3 simple methods to check for compulsory conformance of emergency lighting.
Written by:
Stirling V. Marais
GENERATORS & UPS SYSTEMS
PUBLICATIONS
GENERATORS & UPS SYSTEMS: ISSUE 2
Many instances replace self-contained emergency luminaires with generators and UPS systems, but these systems may not suffice for localized failures.
Written by:
Stirling V. Marais
GENERATOR ISSUES
Generators and UPS versus individual emergency luminaires.
Written by:
Stirling V. Marais
GENERATORS vs. LUMINAIRES: ISSUE 1
Generators and UPS versus individual emergency luminaires.
Written by:
Stirling V. Marais
DISTORTION POWER FACTOR (DPF)
Distortion Power Factor (DPF) explained.
Written by:
Pete Pomeroy, Stirling V. Marais
EMERGENCY LIGHTING RESEARCH
PUBLICATIONS
50% EMERGENCY LIGHTING
Emergency Lighting at 50% light output: The Old Standard.
Written by:
Stirling V. Marais
COMPACT EMERGENCY LUMINAIRES -BEWARE!
Compact fluorescent lamp luminaires are often crammed with emergency gear in order to provide a low cost emergency lighting solution however this may cause premature battery aging.
Written by:
Stirling V. Marais
DALI EMERGENCY LIGHTING
The introduction of the DALI (Digital Addressable Lighting Interface) protocol has enabled the development of centralized assessment of all emergency lighting fittings.
Written by:
Stirling V. Marais, H. Marais
EMERGENCY LIGHTING ISSUES & PROBLEMS
Standby Lighting: a state of emergency?
Written by:
Stirling V. Marais
BATTERY RESEARCH
PUBLICATIONS
BATTERY TEMPERATURES & CYCLING
All batteries are adversely affected by high temperature. All batteries have a finite number of discharge cycles which, when used up, render the battery useless.
Written by:
S. V. Marais, R. Marais, R. J. Longford, K. M. Pillay
CAPACITIVE CHARGING
Any product that utilizes a capacitive coupled mains battery charger for emergency lighting is now illegal in South Africa. The following extracts reveal the specific requirements:
Written by:
Cosine Developments
DISCHARGE LAMP RESEARCH
PUBLICATIONS
CAUSES OF FLUORESCENT LAMP BLACKENING
The scope of the document is to highlight and describe the causes of Blackening at Ends of Fluorescent lamps.
Written by:
Cosine Developments
EMERGENCY BALLAST COMBO FOR CFLs
This paper describes the design of an optimal electronic ballast/emergency control unit specifically aimed at the South African market where the traditional switch start solution usually prevails for cost reasons.
Written by:
Stirling V. Marais
FLUORESCENT LAMP INVERTER RESEARCH
Fluorescent Lamp Characterization and the design of an optimal battery powered ballast.
Written by:
Stirling V. Marais
HIGH EFFICIENCY LIGHTING
Due to the complex dynamics of electrode thermal delay and relaxation times of the plasma and electron gas, the lamp performance varies considerably with supply frequency.
Written by:
Stirling V. Marais
OCCUPANCY SENSORS
PUBLICATIONS
OCCUPANCY SENSORS EXPLAINED
Occupancy sensors are devices that reduce energy consumption by only activating lighting if people are present. They use a variety of techniques or combination of detection mechanisms, to sense human presence.
Written by:
Stirling V. Marais
PHOTOCELL RESEARCH
PUBLICATIONS
STREETLIGHT PHOTOCELL RESEARCH
Streetlight photocell failures continue to plague the lighting industry resulting in energy wastage and high maintenance costs. The job of the photocell is simply to turn the streetlight on at dusk and off at dawn.
Written by:
Ian Mclaren, Derek Curry
PHOTOMETRY
PUBLICATIONS
INTEGRATING SPHERE MEASUREMENTS
An integrating sphere can provide an accurate means of comparing total luminous flux. However, errors can occur due to sensor linearity, lamp geometry, etc.
Written by:
P. Pomeroy, S. V. Marais
PHOTOMETER FOR TUBULAR LAMPS
The accurate measurement of total luminous flux from long tubular fluorescent lamps is usually achieved by using a large diameter integrating sphere.
