D1000 Arc Fault Protection System.pdf

Arc Fault Protection

System D1000

• Improve personnel safety

• Reduce damage

• Avoid costly repairs

• Minimize production downtime

www.selco.com

Segments & applications

In all areas where electrical energy is

distributed the D1000 Arc Fault Protec-

tion System is the choice to ensure the

highest possible personal and opera-

tional safety.

Typical areas where the results of an arc

fault can be fatal are within the follow-

ing segments:

• Industry

• Power generation

• Marine

• Wind Power

• Offshore

• Infrastructure

Within arc fault protection it is impor-

tant to protect the vital parts in the

switchgear and power distribution

boards. The part of the installation

where arc faults are likely to occur is

around:

• Bus bars and bus bar connections

• Circuit breakers

• Transformers

Beneits from D1000 Arc Protection

D1000 improves personnel safety

- Serious injuries to personnel can be avoided. Extreme heat, ire and pressure can be

fatal results of an arc fault. D1000 helps minimizing this risk and improves safety.

D1000 reduces damage to material

- Switchgear equipment and electrical installations are valuable assets. D1000 can

minimize or even avoid severe damage to costly equipment, and allow a fast and

safe power restoration.

D1000 minimizes production downtime

- The result of a sudden stop and downtime in the power supply can be expen-

sive for any operation. A quick reaction from the D1000 can reduce the production

downtime to a minimum or even avoid it.

D1000 enables better insurance conditions

- Insurance companies have seen the beneits of arc fault protection as a requirement.

Some insurance companies are even willing to offer better conditions, when an ef-

icient arc protection system like D1000 is installed to protect the electrical installation.

Arc Fault Protection

Eficient protection of high, medium and low voltage switchgear

A continuous supply of power is important in modern energy infrastructure and

most production facilities. Wherever electrical energy is generated and distributed,

arc lash faults and accidents are likely to occur. An arc protection system is an ef-

icient way to maximize safety and minimize damages.

SELCO’s D1000 Arc Protection System is designed to dramatically reduce the effects

of arc lash faults in high, medium and low voltage switchgear.

Fast protection is essential

An arc fault in a switchboard or control gear develops within milliseconds and lead

to the discharge of enormous amounts of energy between phase bus bars. If the arc

lash is allowed to develop the result is that massive energy discharge burns the bus

bars, vaporizing the copper and thus causing an explosion. Finally this may cause

extensive material damage and jeopardize the safety of operational personnel.

An arc protection system operates much faster than conventional protection relays

and thus damages caused by an arc lash fault can be kept at a minimum level. As a

general guideline, an arc will not cause any damage if it is eliminated within 35ms.

If the arc is allowed to continue and last 100ms some damage will occur. An arc fault

lasting 500ms may cause severe damage to the installation and will require exten-

sive repair.

A short arc time is crucial in order to avoid damage to personnel and material. It is

therefore of vital importance that the source leading to the arc lash time is mini-

mized and the power is disconnected as fast as possible.

SELCO’s D1000 Arc Protection System is the solution.

D1000 Functionality

The D1000 is an advanced and fast arc protection system, offering the following features:

• Compact unit - arc fault and overcurrent protection

• High speed arc fault detection less than 1ms

• Overcurrent protection with detection within 1ms

• Combines optical ibre and point sensors

• Real-time event logging

• Self-supervision of sensors and protection unit

• Easy installation and coniguration via USB

D1000 is the solution

Extended coverage with

the Link Input

The D1000 Protection system is easy

expandable.

Built-in overcurrent protection

D1000 integrates 3-phase current mea-

surement which can detect short- and

overcurrent and reacts within 1 ms. This

makes it possible to reduce unintended

tripping from e.g. lightning lashes or

welding without the traditional extra de-

lay and expense of an external overcur-

rent relay. The overcurrent function can

also be used to trip the breaker in case of

short circuits or long-lasting overloads

without arching.

D1000 Arc lash protection unit

The D1000 is a stand-alone and high

speed arc protection unit for electri-

cal power distribution systems. D1000

supports both point and ibre sensor

technologies for arc lash detection and

supports up to six sensors. The sensors

can be combined in any combinations,

depending on the application and

requirements.

With the Link Input up to 24 sensor

inputs is obtained by connecting up

to four D1000 units together. Alterna-

tively, the link feature can be used for

RS485 MODBUS RTU communication

(SCADA), and thereby easily integrated

into an external monitoring and control

system.

In case of an arc lash fault, the D1000

unit detects and generates a tripping

pulse in less than 1 ms, to the circuit

breaker(s) supplying the installation.

The total arcing time is thus reduced

to the mechanical opening time of the

circuit breaker, which is typical around

50-75 ms. The trip circuit is based on a

solid state switch, providing fast reac-

tion and drive capability for even the

largest circuit breakers.

Real-time event logging

The built-in USB connection provides

easy access to a real-time event log,

which gives detailed diagnostic informa-

tion about all events, incl. near misses

and daily operation events (e.g. conigu-

ration changes, test, reset, and power

cycling). This functionality improves

and increases switchgear life-cycle

expectancy.

Eficient self-supervision

The D1000 system provides continu-

ous surveillance of the complete system

including the connected sensors. Any

system faults, e.g. a sensor cable fault is

indicated by a lashing online LED and

is logged and reported.

The D1000 unit is equipped with easy

accessible select buttons; MODE, TRIP

and RESET which makes it easy to

switch between operation and service

mode, and is used to test the trip output

and conigure the connected sensors.

The D1000 unit can be powered from

either a DC or AC source. If the unit

is powered from AC, it can charge a

backup battery, which can drive the trip

circuit with 24VDC.

Easy coniguration

The D1000 is easy to install and set up

and in case any changes are needed

this is easily done via the USB interface

accessible from the front. The built-in

user-friendly menu system is embedded

in the D1000 unit and activates auto-

matically when the unit is connected to

a PC.

The built-in light sensor on the front

makes it easy to adjust and verify that

all sensors are correctly installed and

equally sensitive. With the TRIP LEVEL

adjustment on the front plate the sensi-

tivity to light can be adjusted. The light

range is 10.000-25.000 lux enabling use

of sensors under different light condi-

tions, indoor light, sunlight, etc.

Flexible and eficient sensors

A1000 point sensor

A2000 ibre sensor

Easy installation

The D1000 system is easy to install and

made to implement in new switchgear

installations as well as retroit projects.

Both the D1000 unit and sensors are

quick and easy to install. A general

guideline is to mount 1-2 sensors per

cubicle or chamber. It is important to

cover all horizontal/vertical busbars (1)

as well as breaker compartments (2) and

drawers.

A1000 point sensor

The point sensor is a light-sensitive ele-

ment based on phototransistor techno-

logy. It detects visible light radiation

which is captured at the cylindrical top.

The A1000 point sensor has a detection

area of up to 2 meter with a character-

istic of 180 x 360°. The A1000 supports

self supervision, and a clear lashing

built-in LED indicates that the sensor is

active. If the sensor reaches the trigger

level the LED will light up constantly.

The A1000 sensor is supplied with a 10m

shielded cable.

In small installations, the calibration

TEST sensor can be used as a single arc

detecting sensor, providing additional

protection without added cost. Setup of

the overcurrent detection is easily done

through the USB interface.

Example is shown below:

A2000 ibre sensor

The A2000 ibre sensor is a light sensi-

tive element based on optical ibre tech-

nology. The A2000 ibre sensor is a fully

lexible ibre with a detection angle of

360° throughout the length of the ibre.

The detection radius is up to 2 meter.

The A2000 ibre has 8 meter active cable

length sensitive to light. The ibre sensor

is ideal to install in electrical cabinets

with drawer sections.

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