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Use of Application Diagrams With Respect to Functions

Note 1: If a diagram number is shown in brackets, it means that the related function can be triggered externally

by the triggering method shown on the diagram or internally by using relay menus.

Note 2: The table is valid after Fundamental Cabling Diagram is applied.

Symbol Description

Application

Diagram No.

I> Phase Overcurrent 1st Threshold Protection -

I>> Phase Overcurrent 2nd Threshold Protection -

I>>> Phase Overcurrent 3rd Threshold Protection -

Ie> Earth Overcurrent 1st Threshold Protection -

Ie>> Earth Overcurrent 2nd Threshold Protection -

Ie>>> Earth Overcurrent 3rd Threshold Protection -

%(I2/I1)> Broken Conductor Protection -

I2> Negative Sequence Overcurrent 1st Threshold Protection -

I2>> Negative Sequence Overcurrent 2nd Threshold Protection -

I< Phase Undercurrent Protection -

IΘ> Thermal Overcurrent Protection -

- Frequency Measurement -

- RMS Current Measurement -

- Fundamental Component Measurement -

- Positive & Negative Sequence Measurement -

- Thermal Θ Measurement -

- Inputs & Outputs Measurement -

- Circuit Breaker Measurements - Trip Time 3

- Circuit Breaker Measurements - Close Time 3

- Circuit Breaker Measurements - Trip Numerator -

- Circuit Breaker Measurements - ∑A -

- Circuit Breaker Measurements - ∑A² -

- Auto-recloser Measurements 3

- Cold Load Pickup 1

- Blocking Logic Selectivity 8

- Circuit Breaker Pole Failure Supervision -

tAux Auxiliary Timer 4

- Delaying Logic Selectivity 8

ARCL Auto-recloser 3

- Auto-recloser blockage - Manual 4

- Reset R1 - R6 4

- Circuit Breaker Supervision - Trip Time 3

- Circuit Breaker Supervision - Close Time 3

- Circuit Breaker Supervision - Charging Spring Failure 6

- Circuit Breaker Supervision - Trip Numerator -

- Circuit Breaker Supervision - ∑A -

- Circuit Breaker Supervision - ∑A² -

- Circuit Breaker Supervision - Trip Circuit Supervision 9

- Circuit Breaker Position Indication and Control 1

- Settings Group Selection (4)

Watchdog Inner Circuit Error / Auxiliary Supply Failure Supervision 2

- Manual Latch Reset for Trip and Programmable Output Relays (4)

Reset LED Manual Reset for Alarms and LEDs (4)

- Buchholz Alarm for Power Transformer Protection 5

- Buchholz Trip for Power Transformer Protection 5

- Thermometer Trip for Power Transformer Protection 5

- Thermometer Alarm for Power Transformer Protection 5

- Pressure Trip for Power Transformer Protection 5

- Alarming over Output Relays 7

- Manual Starting of Waveform Recording 4

- RS485 Cabling 10

Protection Functions

Measurement Functions

Automatic Control Functions

Other Functions

Brand	DEMA
Model	CPM 310 G
Category	Relays
Language	English

DEMA CPM 310 G User Manual

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Questions and Answers:

DEMA CPM 310 G Specifications

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