Arc Fault Protection

relay monitoring systems pty ltd www.rmspl.com.au

The Arc Fault Protection System

Two Part System

ARC SensorARC Fault

Module

1S30Arc Sensor

1S30A

Single through hole sensor 3m detection range 5 – 6 m spacing

1S30B

Dual sensor 5 – 6 m spacing

1S30Arc Sensor

Mounted in each segregated switchgear chamber

Provides detection in the forward direction through 180º

Also detects reflected arc light - so mounting position not critical

Insensitive to day light or general

artificial lighting

1S30Arc Sensor Installation

SENSOR LOCATIONS

1S30Arc Sensor Installation

SENSOR LOCATIONS

1S23Arc Fault Module

Single Sensor

or

2 Sensor Version

Fast ARC Fault detection

Total detection and operate time < 2 ms

Makes an Overcurrent Relay

ARC Fault protection ready

1S23Arc Fault Module

Mounts on a 35mm DIN rail

ARC Detection Output

ARC Sensor Supervision and

Module Fail Output

Terminations via M4 screw terminals

And 0.75 sqmm flying leads

1S23Arc Fault Module Connections

(-) Supply

(+) Supply

Sensor Connections

Module Outputs

Blue - ARC FaultWhite - Supervision

1S23 Application

1S23 is Designed to Interface with an Overcurrent Relay

1S23 Outputs are fed into the Binary inputs of the Overcurrent Relay

An ARC trip may be Current Checked using a fast Overcurrent element in the Overcurrent Relay

The ARC trip may also be implemented without any form of interlocking using the Overcurrent Relay

The Overcurrent Relay is needed to perform the Circuit Breaker Tripping and 1S23 Supervision Alarming

1S23Schematic Application

NEG

POS

1S23

ARC FAULT

1 (-) B W

2 (+) 3 4

SUPERVISION

Arc Sensor Input

Connection of the 1S23 to the DC

Supply

1S23Schematic Application

CIRCUIT BREAKER TRIP COIL

NEG

POS

1S23

CIRCUIT BREAKER SHOWN IN THE OPEN POSITION

52a

ARC FAULT

1 (-) B W

2 (+) 3 4

OVERCURRENT RELAY(not all connections shown)

I>

SUPERVISION

Arc Sensor Input

ARCFAULTINPUT

SUPVINPUT

(-) (+) (-) (+)

Overcurrent Relay and connection of

an Overcurrent output to the CB

Trip coil

Standard Overcurrent Protection

1S23Schematic Application

CIRCUIT BREAKER TRIP COIL

NEG

POS

1S23

SCHEMATIC SHOWING TRIPPING OF CIRCUIT BREAKER VIA ALLOCATED ARC FAULT TRIP OUTPUT OF OVERCURRENT RELAY

CIRCUIT BREAKER SHOWN IN THE OPEN POSITION

52a

ARC FAULT

1 (-) B W

2 (+) 3 4

OVERCURRENT RELAY(not all connections shown)

I>ARC

FAULT TRIP

SUPERVISION

Arc Sensor Input

ARCFAULTINPUT

SUPVINPUT

(-) (+) (-) (+)

Connection of ARC FAULT TRIP output

to the CB Trip circuit

1S23Schematic Application

CIRCUIT BREAKER TRIP COIL

NEG

POS

1S23

SCHEMATIC SHOWING TRIPPING OF CIRCUIT BREAKER VIA ALLOCATED ARC FAULT TRIP OUTPUT OF OVERCURRENT RELAY

CIRCUIT BREAKER SHOWN IN THE OPEN POSITION

52a

ARC FAULT

1 (-) B W

2 (+) 3 4

OVERCURRENT RELAY(not all connections shown)

I>ARC

FAULT TRIP

SUPERVISION

Arc Sensor Input

}

SENSOR INPUTS

ARCFAULTINPUT

SUPVINPUT

(-) (+) (-) (+)

Connection of ARC Sensor Inputs to

the 1S23

1S23Schematic Application

CIRCUIT BREAKER TRIP COIL

NEG

POS

1S23

SCHEMATIC SHOWING TRIPPING OF CIRCUIT BREAKER VIA ALLOCATED ARC FAULT TRIP OUTPUT OF OVERCURRENT RELAY

CIRCUIT BREAKER SHOWN IN THE OPEN POSITION

52a

ARC FAULT

1 (-) B W

2 (+) 3 4

OVERCURRENT RELAY(not all connections shown)

I>ARC

FAULT TRIP

SUPERVISION

Arc Sensor Input

}

SENSOR INPUTS

ARCFAULTINPUT

SUPVINPUT

WHITEBLUE

(-) (+) (-) (+)

Connection of ARC FAULT and

SUPERVISION flying leads to

Overcurrent Relay

Must connect to segregated relay

inputs

Switched negatives employed on 1S23

1S23Schematic Application

CIRCUIT BREAKER TRIP COIL

NEG

POS

1S23

SCHEMATIC SHOWING TRIPPING OF CIRCUIT BREAKER VIA ALLOCATED ARC FAULT TRIP OUTPUT OF OVERCURRENT RELAY

CIRCUIT BREAKER SHOWN IN THE OPEN POSITION

52a

ARC FAULT

1 (-) B W

2 (+) 3 4

OVERCURRENT RELAY(not all connections shown)

I>ARC

FAULT TRIP

SUPERVISION

Arc Sensor Input

}

SENSOR INPUTS

ARCFAULTINPUT

SUPVINPUT

WHITEBLUE

(-) (+) (-) (+)

Positive supply connection to

complete the ARC FAULT and

SUPERVISION circuits

1S23Schematic Application

CIRCUIT BREAKER TRIP COIL

NEG

POS

1S23

SCHEMATIC SHOWING TRIPPING OF CIRCUIT BREAKER VIA ALLOCATED ARC FAULT TRIP OUTPUT OF OVERCURRENT RELAY

CIRCUIT BREAKER SHOWN IN THE OPEN POSITION

52a

ARC FAULT

1 (-) B W

2 (+) 3 4

OVERCURRENT RELAY(not all connections shown)

I>ARC

FAULT TRIP

SUPERVISION

Arc Sensor Input

}

SENSOR INPUTS

ARCFAULTINPUT

SUPVINPUT

WHITEBLUE

(-) (+) (-) (+)

ARC FAULT INPUT

O/C PICKUP

ARC FAULT TRIP

ARC FAULT TRIP LOGIC :

Overcurrent Check Logic for the ARC

FAULT TRIP

1S23Module Dimensions

An array of 1S23 modules to cater of multiple sensor

applications

Module Indications

Module Indications

POWER UP TEST

Single Sensor Version : Both LEDs flash 3 times

Two Sensor Version : Both LEDs flash 4 times

Module Indications

Green SolidSYSTEM HEALTHY

Module Indications

Green LED ExtinguishedPOWER FAILURE or 1S23 SYSTEM FAIL

Module Indications

Green FlashingSENSOR SUPERVISION

FAIL

Module Indications

Red Solid (for 2 sec)ARC FAULT PICKUP

1S23 Application with external current check

1S23

Trip CB

Overcurrent Relay

1S30Arc Sensor

1S30Arc Sensor

ARC Fault Coverage of a Feeder Exit

Sensors installed in the CT chamber

Sensors installed in the Cable Termination

chamber

1S23 and Overcurrent Relay combination provide

CB Tripping

1S23 Application with external current check

Trip CB

Overcurrent Relay

Trip CB

Overcurrent Relay

Trip CB

Overcurrent Relay

1S30Arc Sensor

1S30Arc Sensor

1S30 Arc Sensor

1S30 Arc Sensor

1S231S23

ARC Fault Coverage of a Bus chamber and Feeder

CB chambersMultiple 1S23 modules and

Overcurrent Relay combination provide CB

TrippingSensors installed in the

Bus chamber

Sensors installed in the CB chamber

1S23 Application with external current check

1S23

Trip CB

Overcurrent Relay

1S30Arc Sensor

1S30Arc Sensor

Trip CB

Overcurrent Relay

1S23

Trip CB

Overcurrent Relay

1S30Arc Sensor

1S30Arc Sensor

1S30Arc Sensor

1S30Arc Sensor

1S30 Arc Sensor

1S30 Arc Sensor

1S231S23

ARC Fault Coverage of the Bus chambers and Feeder

CB chambers

ARC Fault Coverage for the Feeder Exits

A modular approach allows the ARC Fault Coverage to

be extended

1S23 Ordering Code

1S30 Ordering Code

Budget pricing

1S23 ARC Fault Module

1 sensor inputs$175

2 sensor inputs$200

1S30 ARC Fault Sensors

Single point sensor $70Dual point sensor $95

Made to order : lead time 6 weeks

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