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 Research - Sterling Marais

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

Battery Research - Sterling Marais

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.

Written by:
S. V. Marais, C. R. Durrheim, M. J. Alport

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