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Carelabs

IEEE 1584 · Engineering

Ultimate Arc Flash Protection For Malaysian Industries

Carelabs delivers arc flash hazard analysis for industrial and commercial facilities across Malaysia, identifying incident energy levels and PPE requirements in line with MS IEC 60364. Our engineers use ETAP modelling and the IEEE 1584 calculation method to map arc flash boundaries across your electrical distribution system.

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From calculation to a working programme

A study that ends at a number changes nothing on the floor. What changes outcomes is the label, the procedure and the training that follow from it.

What We Deliver

Incident energy per working position

Energy is calculated in cal/cm² to IEEE 1584-2018 at the working distance matching each panel, using the electrode configuration, gap and enclosure dimensions recorded on site rather than a single default applied across the installation.

THE DUTY

DOSH asks whether the hazard was identified

No Malaysian regulation names incident energy. The duty comes from the Occupational Safety and Health Act 1994 and the Electricity Regulations 1994, and a calculation is how an employer evidences that the electrical hazard was identified and controlled.

  • Assessment carried out against IEEE 1584-2018, with the model's validity range and any extrapolation stated rather than left implicit.
  • Arcing duration taken from the protective settings the relays actually hold, since a study built on the settings schedule can be describing a plant that no longer exists.
  • Fault current from a short circuit study to IEC 60909, with the TNB fault level obtained for the point of connection.
  • Minimum source conditions assessed alongside maximum, because lower fault current can lengthen clearing time and raise the energy rather than lower it.
  • Locations exceeding the practical limit of arc-rated clothing escalated as design findings, since PPE does not address the pressure wave.
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DELIVERABLES

What you receive

A report package aligned to MS IEC 60364 and IEEE 1584, issued by the lead engineer who carried out the site work.

  1. 1Incident energy and arc flash boundary by equipment and working position
  2. 2Printed, environment-rated labels ready to apply, with a placement schedule
  3. 3PPE specification per location, referenced to the calculated energy rather than to a category table
  4. 4Mitigation options for every location above the practical PPE limit, with the clearing-time change each depends on
  5. 5Briefing material your safety team can reuse for new starters and contractors
Reach Out

How the work runs

01

Scope the energised work

We establish which panels are genuinely opened live. Equipment never accessed energised can be excluded, and that exclusion is recorded rather than assumed.

02

Capture what the model needs

Enclosure dimensions, electrode configuration, gap and working distance are recorded on site, since IEEE 1584 results are sensitive to each of them.

03

Establish fault current

TNB fault level is obtained for the point of connection and a short circuit study to IEC 60909 gives bolted fault current at every bus.

04

Read the protection

Relay and trip unit settings are read from the devices, and clearing time is taken from the real characteristic at the calculated arcing current.

05

Calculate, label and specify

Incident energy, boundaries and PPE are determined per position, labels are produced, and procedures are drafted against the resulting values.

06

Train and hand over

The people who open the panels are briefed, the report is issued, and your team is left able to explain every number on every label.

Frequently asked questions

Not by name. The Occupational Safety and Health Act 1994 requires a safe system of work and the Electricity Regulations 1994 govern competent operation of installations. Neither specifies incident energy, but both make the employer responsible for identifying and controlling the hazard, and a calculation is the practical way that responsibility is evidenced to DOSH.
They become wrong, and confidently so. Incident energy depends directly on clearing time, so any setting change alters the energy at every position downstream of that device. Setting changes should trigger a re-run of the affected locations, which is inexpensive when the calibrated model is retained from the original study.
Yes. A contractor opening your panel faces the energy your installation produces, not the energy assumed in their own procedures. Labels, boundaries and PPE requirements should be issued as part of the permit, and most incidents involving contractors trace back to that information never being handed over.
Often. Because energy scales roughly with arcing time, the effective levers are maintenance switching, optical arc flash relays, lowered instantaneous settings where grading permits, and current-limiting devices. Each carries a selectivity cost that has to be assessed, which is why this is decided alongside relay coordination rather than in isolation.

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