Skip to content
Carelabs

IEEE 1584 · Engineering

Custom Relay Coordination Solutions For Indonesian Industries

Isolate faults, protect equipment, and stay compliant with Care Labs’ meticulous protective device coordination study in Indonesia. Carelabs models your facility's protective devices in ETAP and plots time-current coordination curves so each relay and breaker trips in the correct sequence when a fault occurs.

Free Consultation

One scheme, several sites, no shared baseline

Operations spread across multiple locations typically have protection set by whoever commissioned each site. There is rarely a common standard, and rarely any record of what was actually applied.

What We Deliver

A common as-found baseline

Settings are read out of the devices at each location and recorded in one register, which for multi-site operators is frequently the first time the installed position has existed as a single document.

WHY IT MATTERS

Every site set by a different hand

Without a common baseline, a technician moving between locations encounters different philosophies at each. Maintenance error becomes likely, and no one can say whether any given site discriminates correctly.

  • Settings read from each device rather than transcribed from documentation, because the two routinely disagree after years of undocumented adjustment.
  • Fault levels established per site from the supplying network, since the same equipment behaves differently on a strong and a weak connection.
  • Grading verified against calculated fault current at each position rather than against generic curves supplied with the device.
  • Restoration behaviour assessed, as simultaneous re-energisation after an interruption produces a condition no single-circuit calculation reveals.
  • Every recommended change reported with its arc flash consequence, so selectivity is not obtained at an unexamined safety cost.
Contact Us

DELIVERABLES

What you receive

Issued against PUIL 2011 and SNI IEC 60364, signed by the engineer who performed the grading.

  1. 1A consolidated as-found settings register covering every site assessed
  2. 2Time-current curves per grading path with the achieved margin annotated
  3. 3Discrimination register naming each failing pair and the fault range where it fails
  4. 4A settings philosophy applied consistently where site conditions allow, with deviations documented
  5. 5Recommended settings with a verification checklist for application at each location
Reach Out

How the study runs

01

Establish what exists

Settings are read at each location and consolidated into a single register, which is usually the first complete record the operator has held.

02

Establish fault levels per site

Supply fault level is obtained for each connection, since sites on different parts of the network present very different conditions.

03

Model each installation

Manufacturer characteristics are built for every installed device, including intentional delays configured into electronic trip units.

04

Grade and compare

Discrimination is calculated per site and results are compared, which identifies both genuine differences and inconsistencies with no technical basis.

05

Set a common philosophy

Where conditions allow, a consistent approach is recommended across sites, with documented exceptions where supply conditions genuinely require them.

06

Issue and verify

Settings are issued per site with a verification checklist, so the applied position is provable at each location rather than assumed.

Frequently asked questions

Partly, and where they can it reduces maintenance error considerably. The limit is that fault levels differ between connections, so the same setting can be selective at one site and not at another. A common philosophy with documented, justified exceptions is usually achievable where identical settings are not.
It is the normal starting point and not an obstacle. The audit reads values directly from the devices, which produces the baseline that never existed. For multi-site operators that consolidated register is frequently the most immediately useful output, independent of any setting change that follows.
Because everything energises simultaneously. Transformer magnetising inrush and motor starting current arrive together, producing combined current well above normal load that can operate protection grading perfectly well in service. It is a restoration condition rather than a fault, and it is assessed separately.
For the as-found audit, yes, since settings must be read from the devices. The analysis is then carried out centrally. Where sites are genuinely identical in supply and configuration, a representative sample can reduce visits, though that has to be established rather than assumed from similar construction.

Schedule Your Custom Relay Coordination Solutions For Indonesian Industries

Tell us about your project.

Browse ServicesRequest a Quote