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Threshold Occurrence Event

Thresholds occurrence excursions are configured limits that have been exceeded on plant, electrical power or other systems within the facility.

These breaches are recorded and reported in the form of an email condition report which can be used in root cause analysis, system resilience and reliability studies.

Summary information of the event

The Summary information notes the Electrical Disturbance signature.

System

sub.net

Class

Voltage dip

Trigger

Analogue under, 1:Va

Event priority

5

Circuit

Home site

Ambient temperature

24.2

C

RMS Event waveforms

The RMS Electrical Disturbance signature is graphed in seconds to provide a recognizable view of the Threshold occurrence condition.

Voltage and Current

Detailed Event waveforms

The Electrical Disturbance signature waveform is graphed in milliseconds to provide a detailed view of the disturbance and the Phase relationship prior, during and after the situation.

Voltage and Current

Measurement Summary

RMS levels of the Threshold Occurrence event Pre the event, Max and Min during the event and Post the event

Ch

Pre

Max

Min

Post

1

Va

248.250

253.054

56.297

252.212

V

2

Vb

249.649

254.465

55.547

253.624

V

3

Vc

247.706

252.484

55.106

251.656

V

4

Ia1

2734.951

2787.311

607.657

2778.650

A

5

Ib1

2731.801

2784.162

607.264

2775.304

A

6

Ic1

2731.407

2783.965

609.626

2774.910

A

Frequency

49.982

50.014

49.965

49.971

Hz

S:Home site

2037.136

2116.230

76.836

2102.017

kVA

P:Home site

2037.107

2116.205

76.823

2101.992

kW

Q:Home site

10.706

195.888

-30.762

10.042

kVAr

Analogue Limits

Analogue inputs which exceed the set Threshold Occurrence limits during an event are identified under Limit types and the associated time(s) are relative to the Start time of the event.

State

Limit type

ms

Alarm

1:Va

Analogue under

0

Alarm

2:Vb

Analogue under

0

Alarm

3:Vc

Analogue under

0

Alarm

1:Va

Analogue RoC

0

Alarm

2:Vb

Analogue RoC

0

Alarm

3:Vc

Analogue RoC

0

Normal

1:Va

Analogue under

140

Normal

2:Vb

Analogue under

151

Normal

3:Vc

Analogue under

151

Normal

1:Va

Analogue RoC

161

Contact Events

All changes of state of the input contacts detected during the event.

Time(s) are relative to the Start time of the event.

State

Contact

ms

Alarm

Circuit breaker 1

22

Detailed switching of Contact inputs

Contact status conditions are graphed in milliseconds to provide detailed switching and status of devices during an event. Abnormal (Alarm) conditions are identified as a thick line and normal condition as a thin line.

The Contact inputs can be configured as a Trigger or Status condition.