GE AKD-8 Manuale utente

Electrical

Distribution

Control

APPLICATION

GUIDE

•

••

•

•••

••

•

••

•

••

•

••

•

Courtesy of NationalSwitchgear.com

•

Table

Contents

General

description

Safety

and

reliability

features

POWER

LEADER

Power

Management

System

MicroVersaTrip

Plus

and

Trip

Units

Application

data

Accessories

Electrical

characteristics

Repetitive

duty

Design

considerations

Time

current

tripping

characteristics

The

Load

Center

Principle

Power

circuit

breaker

selection

tables

Ground

detection

considerations

Automatic

transfer

(

throwover

)

equipment

Sizing

and

dimensional

data

Switchgear

layout

and

sizing

POWER

LEADER

instrument

panel

Floor

plans

and

side

views

3843

4447

Guideform

Specifications

Standards

and

references

Courtesy of NationalSwitchgear.com

{

Courtesy of NationalSwitchgear.com

General

description

circuit

breakers

instrumentation

and

other

auxiliary

circuit

protective

devices

single

multiple

source

configurations

AKD

switchgear

can

applied

either

power

distribution

unit

part

unit

substation

indoor

outdoor

construction

AKD

switchgear

sections

are

provided

either

”

widths

AKD

Switchgear

industrial

duty

equip

ment

built

ANSI

standards

and

uses

100

rated

Low

Voltage

AKR

Power

Circuit

Breakers

designed

have

mar

gin

within

its

ratings

provide

maximum

continuity

service

for

those

applications

subject

severe

duty

;

such

repetitive

switching

encountered

with

motor

starting

power

factor

correction

demand

control

load

shedding

etc

designed

operated

ambient

temperature

between

and

Type

AKR

low

voltage

powrer

circuit

breakers

are

available

for

AKD

switchgear

six

frame

sizes

•

800

AKR

•

1600

AKR

•

2000

AKRT

•

3200

AKR

•

4000

AKR

100

•

5000

AKR

125

AKD

switchgear

manufactured

’

ISO

9002

certified

facility

Burlington

Iowa

complies

with

ANSI

standards

37.20

and

NEMA

and

list

standard

1558

file

76012

The

switchgear

has

been

conformance

tested

according

ANSI

37.51

major

factor

contributing

this

extended

continuity

service

the

availability

renewal

parts

complete

with

detailed

maintenance

instructions

and

original

equipment

documentation

From

coordination

standpoint

type

AKR

circuit

breakers

provide

full

selectivity

with

each

other

and

with

other

protective

devices

The

bus

sizing

based

temperamre

rise

rather

than

current

density

(

with

switchboard

construction

)

ANSI

standards

require

that

switchgear

operate

the

ratings

devices

installed

Switchgear

short

circuit

ratings

are

based

two

cycle

withstand

tests

with

sec

ond

interval

performed

power

fac

tor

and

635

Vac

maximum

For

switch

boards

single

cycle

withstand

test

power

factor

and

600

Vac

maximum

performed

All

breakers

can

equipped

with

current

limiting

fuses

AKRU

and

AKRU

are

prodded

with

integrally

mounted

fuses

while

separate

fuse

carriage

required

for

AKRT

AKR

100

and

AKR

125

Low

’

voltage

circuit

breakers

rated

800

1600

2000

amps

can

stacked

four

high

combinations

resulting

reduced

floor

space

requirements

The

gauge

bolted

modular

designed

steel

frame

permits

flexibility

arrangements

breakers

and

associated

components

AKD

switchgear

available

with

the

following

maximum

nominal

ratings

•

600

Vac

250

Vdc

•

5000

Aac

6000

Adc

•

2200

Vac

RMS

dielectric

•

200

symmetrical

short

circuit

General

Electric

’

AKD

low

voltage

switchgear

can

help

you

meet

today

’

chal

lenges

for

greater

productivity

;

increased

operator

safety

and

improved

equipment

reliability

and

maintainability

;

AKD

switchgear

houses

low

voltage

power

Courtesy of NationalSwitchgear.com

Safety

and

reliability

features

Standard

and

optional

fea

tures

are

ava

ilable

with

AKD

switchgear

order

meet

the

increasing

industry

emphasis

system

reliability

and

operating

personnel

safety

•

Closed

door

operation

Breaker

compartment

doors

have

ventilation

openings

thus

protect

ing

operators

from

hot

ionized

gases

vented

the

breaker

during

circuit

interruption

•

Closed

door

drawout

True

closed

door

drawout

construction

standard

with

all

AKD

equip

ment

The

breaker

compartment

doors

remain

stationary

and

closed

while

the

breaker

racked

out

from

the

connected

position

through

test

the

disconnected

position

Doors

are

secured

with

nigged

tum

latches

•

Closed

door

control

circuit

accessibility

standard

slide

out

instrumentation

tray

located

above

each

breaker

compartment

minimizing

cross

hinge

wiring

When

required

indicating

lights

and

test

switches

can

mounted

the

front

the

tray

Fuses

for

and

trip

circuits

can

mounted

inside

the

tray

and

are

accessible

with

the

tray

pulled

out

Routine

wiring

inspections

and

fuse

checks

fuse

replacements

can

performed

with

the

breaker

compartment

door

closed

protecting

operators

from

energized

primary

circuits

•

Closed

door

trip

unit

setup

and

display

Optional

MicroVersaTrip

Remote

Display

provides

safe

closed

door

access

the

AKR

breaker

’

MicroVersaTrip

Plus

MicroVersaTrip

trip

unit

metering

status

and

setup

functions

)

Courtesy of NationalSwitchgear.com

Easy

use

breaker

interlocking

and

locking

features

minimize

the

risk

operational

errors

•

Low

voltage

power

circuit

breaker

locking

standard

feature

the

low

voltage

power

circuit

breaker

can

padlocked

the

open

position

with

shank

padlock

prevent

unauthorized

closing

and

racking

•

Breaker

insertion

and

withdrawal

interlocks

Interlocks

prevent

racking

the

breaker

out

when

the

breaker

contacts

are

closed

Breakers

are

trip

free

when

not

the

connect

test

position

superior

bus

system

offers

different

levels

protection

•

Fully

tin

plated

copper

bus

Fully

tin

plated

copper

main

and

riser

bus

standard

feature

AKD

equipment

Tin

plating

provides

superior

corrosion

protection

especially

for

application

for

the

pulp

and

paper

and

waste

treatment

industries

where

corrosive

agents

rou

tinely

exist

’

bus

bars

are

tin

plated

after

forming

and

punching

ensure

completely

plated

bolt

holes

and

bar

edges

Sliding

contact

surfaces

such

breaker

stab

tips

are

fully

silver

plated

Silver

plated

bolted

connections

are

avail

able

option

Bus

system

Bare

bus

provided

standard

AKD

switchgear

this

configuration

there

are

covers

remove

all

bus

connections

are

easily

accessible

for

maintenance

Note

that

horizontal

isolation

barrier

provided

between

the

vertical

buses

and

every

main

and

tie

breaker

for

added

safety

the

event

fault

insulated

isolated

bus

system

that

fully

insu

lates

the

horizontal

main

bus

with

fluidized

epoxy

coating

and

isolates

each

phase

the

vertical

riser

bus

available

option

Accessibility

main

bus

joints

provided

replace

able

covers

and

live

connections

are

reachable

from

the

rear

except

the

breaker

load

side

terminals

Bus

compartmentation

also

available

optional

feature

AKD

switchgear

Vertical

and

horizontal

busses

are

isolated

from

die

cable

com

partment

glass

reinforced

polyester

barriers

;

tez

;

Courtesy of NationalSwitchgear.com

Safety

and

reliability

features

(

continued

)

The

breaker

compartment

designed

provide

operator

and

system

safety

options

•

Isolated

breaker

compartment

Each

circuit

breaker

located

completely

enclosed

ventilated

compartment

with

grounded

steel

barriers

minimize

the

possibility

fault

communication

between

com

partments

breaker

position

switch

optionally

available

•

Safety

shutters

Safety

shutters

are

optionally

available

breaker

compart

ments

They

protect

operators

from

accidental

contact

with

live

conductors

when

the

breaker

withdrawn

Safety

shutters

are

provided

standard

feature

reverse

fed

breakers

•

Defeatable

door

interlock

This

option

prevents

inadvertent

opening

the

compart

ment

door

unless

the

breaker

the

disconnect

position

This

provision

made

for

authorized

defeat

intedock

•

Padlockable

door

latch

This

optional

feature

enables

padlocking

the

door

latch

order

prevent

unauthorized

entry

into

the

breaker

com

partment

)

•

Breaker

rejection

feature

rejection

system

provided

standard

each

breaker

compartment

prevent

the

insertion

breaker

with

inad

equate

short

circuit

and

incorrect

continuous

current

ratings

•

Drawout

padlock

provision

mechanism

padlock

device

provided

standard

lock

out

the

drawout

mechanism

test

disconnect

position

This

provision

will

three

padlocks

with

shank

•

Key

interlocks

This

option

provides

for

compulsory

locking

the

breaker

the

open

trip

free

position

hen

fully

connected

Applicable

schemes

would

mechanical

interlocking

two

breakers

only

one

can

closed

time

load

center

unit

sub

stations

interlocking

the

primary

switch

and

secondary

main

breaker

such

that

the

secondary

main

must

open

before

the

primary

switch

can

operated

Single

and

double

key

locks

are

available

Key

locking

does

not

prevent

operation

when

the

breaker

test

disconnect

position

Courtesy of NationalSwitchgear.com

Installation

and

maintenance

are

made

easy

with

these

design

features

•

Accessibility

equipment

compartments

provides

easy

main

tenance

the

breaker

compartment

area

and

control

circuit

elements

(

located

drawout

tray

)

well

convenient

inspection

the

bolted

bas

connections

)

{

•

Cable

space

Conduit

entrance

area

meets

NEC

]

requirements

Extended

depth

frame

options

are

available

and

sizes

for

appli

cations

requiring

additional

cable

space

•

Breaker

lifting

device

Installed

top

the

switchgear

this

rail

mounted

hoist

provides

the

means

for

installing

and

removing

breakers

from

the

equipment

This

standard

feature

outdoor

walk

construction

and

optional

feature

indoor

construction

•

Control

circuit

isolation

Control

wires

are

run

between

compartments

steel

riser

channels

Customer

terminal

blocks

are

located

metal

enclosed

wire

troughs

the

rear

cable

area

Intercubicle

wiring

run

wireway

top

the

switchgear

where

interconnection

terminal

blocks

are

located

Courtesy of NationalSwitchgear.com

TTTt

;

)

;

•

irttrt

rltn

‘

rnm

(

‘

IIS

‘

;

dsd

—

fii

cgcgc

—

Iff

“

til

Erl

•

STSiEU

sSS

cwws

•

fffir

SJgT

jgp

rfe

“

srr

tsu

‘

•

—

•

Safety

and

reliability

features

(

continued

)

’

manufacturing

processes

and

testing

set

the

quality

standards

the

switchgear

industry

•

Paint

finish

AKD

switchgear

protected

the

“

coat

paint

system

consisting

“

cathodic

electrodepositioir

process

employing

the

same

principle

used

electroplating

electrically

charged

object

immersed

bath

oppositely

charged

particles

will

attract

and

become

coated

with

those

particles

the

process

switchgear

parts

are

conveyed

through

seven

stage

washing

process

where

they

are

thoroughly

cleaned

surface

prepared

chrome

sealed

and

thoroughly

rinsed

the

parts

are

immersed

electrocoating

tank

where

they

receive

epoxy

coating

0.7

0.8

mils

thick

every

surface

After

rinse

the

parts

enter

curing

oven

where

the

coating

baked

fusing

the

metal

and

ensuring

hard

uniform

finish

The

resulting

ANSI

light

gray

paint

finish

far

exceeds

the

requirements

1558

and

ANSI

37.20

which

requires

minimum

passing

200

hour

salt

spray

test

Periodic

testing

independent

laboratory

subjected

the

“

coat

”

000

hours

salt

spray

000

hours

humidity

cabinet

plus

acid

and

alkaline

resistance

tests

spot

and

stain

tests

marring

tests

and

impact

and

flexibility

tests

These

tests

proved

that

AKD

switchgear

can

handle

different

severe

operating

environments

•

Seismic

test

The

AKD

equipment

has

been

seismically

tested

for

Zone

certify

its

capability

withstand

the

most

severe

earthquake

conditions

and

that

meets

seismic

require

ments

the

USA

Uniform

Building

Code

•

Complete

and

accurate

documentation

The

AKD

design

makes

extensive

use

computer

aided

engineering

and

design

All

customer

documentation

generated

via

linked

engineering

and

production

systems

for

seamless

ordering

materials

and

manufacturing

parts

This

integration

and

linking

systems

assures

consistently

accurate

customer

and

manufacturing

documentation

and

optimized

equipment

designs

all

driven

the

engineers

system

inputs

Courtesy of NationalSwitchgear.com

POWER

LEADER

Power

Management

System

Power

management

its

best

The

POWER

LEADER

system

specifically

designed

grow

with

your

needs

Because

the

system

easily

expandable

you

can

add

its

capabilities

your

needs

grow

eliminating

the

risk

having

start

over

with

whole

new

system

sometime

the

future

Inside

every

switchgear

lineup

flow

’

large

amount

informa

tion

The

data

the

form

power

(

volts

amps

waveform

)

passing

through

the

equipment

With

the

proper

devices

you

can

selectively

access

this

wealth

information

and

use

become

efficient

and

productive

This

what

power

management

systems

are

all

about

With

system

place

you

can

benefit

from

•

Reduced

energy

costs

•

Less

downtime

•

Improved

predictive

maintenance

•

Faster

corrective

maintenance

•

Increased

safety

•

Higher

productivity

•

Improved

power

quality

’

newer

technologies

become

available

you

are

also

assured

convenient

cost

effective

migration

path

should

you

wish

upgrade

your

POWER

LEADER

system

The

POWER

LEADER

system

also

offers

the

components

nec

essary

monitor

protect

and

control

devices

and

equipment

operating

two

locations

giving

you

even

greater

free

dom

expand

your

system

Key

capabilities

include

•

System

monitoring

and

metering

•

Alarm

management

•

Reporting

and

trending

•

Power

distribution

and

device

control

•

Cost

management

•

Predictive

maintenance

•

Power

quality

analysis

•

Dynamic

real

time

graphic

display

’

component

status

and

operation

should

come

its

surprise

that

virtually

all

switchgear

now

shipped

with

power

management

features

What

began

option

fast

Incoming

absolute

necessity

The

POWER

LEADER

family

products

offers

all

the

power

management

benefits

stated

above

along

with

extensive

growing

capability

;

easy

upgrade

through

open

architecture

and

complete

range

services

such

technical

assistance

start

support

and

site

training

Courtesy of NationalSwitchgear.com

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