1500Vdc switch and Air Circuit Breakers

Oscar MOON, LS ELECTRIC

Market Trend

General needs in the past New-normal needs

Apparatus by 1000Vdc, 690Vac

Manual type, low cost

Apparatus by 1000Vdc Less interest on Short-circuit

level

LVRT and HVRT for wind turbine control and power converter

1500Vdc, 900Vac for high altitude

Compact UL Listed device

Breakers for 1500Vdc, 690Vac Bigger battery, higher kA Bi-directional

Breakers up to 1150Vac Still important : LVRT/HVRT

Now markets want to have more compatible, compact and certified solution.

Note)LVRT : Low Voltage Ride-Through, HVRT : High Voltage Ride-Through

AC

DC

Frame C Frame D Frame E

NEW

NEW

NEW NEWUe : ~690Vac In : 800~1600AUp to 50kA Compact size

Ue : 690Vac In : 630~2000AUp to 85kA 900/1000/1150Vac

Ue : 690Vac In : ~3200AUp to 100kA 900/1000/1150Vac

TBD in 2021 Ue : ~635Vac In : 800~1600AUp to 85kA

Ue : ~635Vac In : ~3200AUp to 100kA

Ue : 1500VdcIn : 800~1600AIcw=50kA/1sCompact size

Ue : 1500Vdc In : ~2000AIcw=65kA/1s Medium size

1500Vdc breaker (world first)

Ue : 1500Vdc In : ~1200, 1600Icw=50kA/1s Compact size

TBD

Ue : 1500VdcIn : ~4000AIcw=100kA/1s UL489B/489F

LS ELECTRIC AC/DC series overview

UDA Compact 1500Vdc Switch

Now markets want to have more compatible, compact and certified solution.

UL489B for PV, UL489F for Battery System

1500Vdc 1200A with motorized

UL 1600A for vertical connection

Rated Short-time : 50kA/1sec, 80kA/50ms

Operation 12500 times in No-load switching

ForSusol UL Compact DC switch-disconnector

High-voltage AC Circuit Breaker

Smaller than E-frame but covering by 2000A 1500Vdc, which C-frame could not do

Idea solution for medium-sized BCP/ESS panel

Maximum 2000A 1500Vdc

388mm width (21% narrower than Frame E)

Rated Short-time : 65kA/1sec, 100kA/0.5ms

Operation 20000 times in No-load switching

ForD-frame 1500Vdc 2000A Switch

493mm 283mm

High-voltage AC Circuit Breaker

Smaller than E-frame but covering by 2000A 1500Vdc, which C-frame could not do

ForD-frame 1500Vdc 2000A Switch

General

Standard IEC 60947-3

Utilization categoryDC-22ADC-23A

Type Fixed type

Poles 3P, 4P

Characteristics

InsulationUimp 12kV

Ui 1500V

Rated Voltage Ue1500V DC (4P)

1000V DC (3P)

Rated Current In 2000 A

Rated Short-time... Icw 65kA/1s

Lifetime Electrical 500 times

Mechanical 20000 times

▣ General specification ▣ Ordering code

High-voltage AC Circuit Breaker

Various rating : 800/900/1000/1150Vac according to specific needs and application

800/900Vac for Solar, 1000/1150Vac for Wind

Ideal solution for high altitude LV project

New OCR installed : enhanced performance

Easy maintenance : Same as previous AC ACB

ForAV-type Air Circuit Breaker

Based on delivery record for wind industry

Altitude 2000m 3000m 4000mWithstand voltage [V] 3500 3150 2800

Average insulating voltage [V] 1250 1125 1000Max. using voltage [V] 1150 1035 920

Current compensation constant 1xIn 0.98xIn 0.96xIn

High-voltage AC Circuit Breaker

Various rating : 800/900/1000/1150Vac according to specific needs and application

ForAV-type Air Circuit Breaker Characteristics

(P)(Vac)(V)(kV)

VersionSuitability for isolationDegree of pollution IEC60661-1Certification

Brand nameAV-16D□ AV-32E□

1600AF 3200AFRated current (In)at 40℃

400 / 630 / 800 / 1000 / 1250 / 1600 400 / 630 / 800 / 1000 / 1250 / 1600/ 2000 / 2500 / 3200

1150V 30 501000V 42 65

900V 50 75800V 50 75

Rated serivce breakingcapacity (Ics)

1s 30 503s 30 50

Rated making capacity

< Icw (ms) ≥ Icw

Closing time

Mechanical and Electrical Life cycle

Endurance (times) Mechanical(Without maintenance) Electrical

Dimension and Weight

Weight (3P/4P) Drawout Without cradle 37/45 44/49With cradle 70/85 88/104

Fixed 34/44 45/56External Dimensions Drawout 3P(4P) 430×334(419)×375 430×412(527)×375(H×W×D) Fixed 3P(4P) 300×300(385)×295 300×378(493)×295

CB certification according to IEC 60947-2

Number of poles 3 / 4Rated operational voltage (Ue) 1150Rated insulation voltage (Ui) 1250Rated impulse withstand voltage (Uimp) 12kV

Fixed / Withdrawable

3

% 100

SUSOL

Ampere Frame

(A)

Rated ultimate breakingcapacity (Icu) (kA)

% 100

Rated short-timewithstand current (Icw)

(kA)

12,5001,000

(kg)

(mm)

Utilization category (according to IEC 60947-2) B

Operation timeTotal Breaking time

max. 70max. 30max. 80

50kA at 1150Vac

65kA at 1000Vac

75kA at 900Vac

75kA at 800Vac

High-voltage AC Circuit Breaker

Various rating : 800/900/1000/1150Vac according to specific needs and application

ForAV-type Air Circuit Breaker

▣ Temperature derating (800/900/1000/1150Vac ACB)

Type

Connection type

Ambient temperature(°C) 40 45 50 55 60 65 70 40 45 50 55 60 65 70

AV-08D (800A) 800 800

AV-10D (1000A) 1000 1000

AV-13D (1250A) 1250 1230 1180 1120 1250 1240 1180

AV-16D (1600A) 1600 1580 1520 1450 1390 1600 1530 1460

Type

Connection type

Ambient temperature(°C) 40 45 50 55 60 65 70 40 45 50 55 60 65 70

AV-20E (2000A) 2000 1960 1890 1810 1720 2000 1900 1810

AV-25E (2500A) 2500 2390 2300 2200 2100 2500 2420 2320 2210

AV-32E (3200A) 3200 3100 2990 2870 2750 2620 3200 3150 3020 2900 2760

* Ambient temperature is greater than 60˚C, consult us.

Fixed type

Horizontal or Frontal Vertical

Fixed type

Horizontal or Frontal Vertical

Battery Connection Panel for BESS

BCP for containerized solution

Battery Connection Panel?

Main protection panel, between Power Conversion System and Battery Container

AC

DC

●●●

●●●

●●●

●●●

●●●

BANK 2

AC

DC

BatteryRack

●●●

●●●

●●●

●●●

●●●

BANK 1

BCP (Battery Connection Panel)

: Protection Device(CB, Relay, Fuse)

Grid Connected LV Switchgear

Air Circuit Breaker

LV SWGR

Transformer

Air Circuit Breaker

DC Switch-disconnector

LS ELECTRIC PCS for BESS

PCS (Battery Inverter)

LS ELECTRIC BCP for BESS

BPU for BESS DC MCBDC Relay

DC Switch-disconnector

SPD

CP

BPU (Battery Protection Unit)

BESS System Diagram

DC MCCB

[DC Air Circuit Breaker]• Ue : DC1200V/1500V• In : 3200A• ICW : 100kA/1s• Control Voltage : AC 220V

[AC Air Circuit Breaker]• Ue : 690Vac• In : 1600A• Control Voltage : AC 220V

[DC MCCB]• DC 1000V, ~800A, 40kA• DC 1150V, 1000,1250,1600A• DC 1500V, ~250A, 50kA

[DC Switch-Disconnector]• Ue : DC1200V/1500V• In : 4000A• ICW : 100kA/1s• Control Voltage : AC220V

Hall Sensor(Option)

DC Shunt

[Volt Meter]

[Ampere Meter]

Circuit Protectorof control power

Outline Front Back

BCP Structure

BESS Container

CASE (I)Disconnect Switch

CASE (II)Disconnect Switch + Fuse

Category Contents

Specification 1) Ue : DC 1000V / 1200V / 1500V2) In : 160~4000A3) Icw : 100kA/1s

Usage 1) Connection between PCS and Battery Rack2) Backup Protection of BPU & PCS

ConnectionMethod

1) Connecting to PCS : Cable(300~400 mm2) or Busduct

- from Top or Bottom 2) Connecting to Battery Rack : Cable(25~70mm2)

- from Top or Bottom

ComponentSelection

1) Max Voltage of Ve ≥ ESS/PV system2) Max Current of Ie ≥ ESS/PV system3) Max Icu of Icu or Icw ≥ ESS/PV system

Related Test Insulation / Temperature / Short circuit performance / Operation performance check

Technical datasheet BCP Customized design

BCP consist of DC Main Circuit (Blue box) and Control Power Circuit of Battery Rack (BPU*, BMS* - Red box).* There is no Control Operation in BCP itself.

Switch or LBS

CB or Fuse

Communication

Control power

DC main line

Index

* BCP: Battery Connection Panel

* BPU: Battery Protection Unit

* BMS: Battery Management System

* RBMS: Rack BMS

* MBMS: Module BMS

* SBMS: System BMS

Single-Iine Diagram & Control Circuit

~=

DC Switch

EMS/PMS

RBM

S

MBM

S

MBM

S

MBM

S

MBM

S

SBMSRBM

S

MBM

S

MBM

S

MBM

S

MBM

S

…GRID PCS

Low

Voltag

e (A

C 1

10~

220V

)

SMPS

BPU

BPU

BATTERY RACK

BATTERY RACK

TR

(DC 24V)

BCP Battery RackPCSAC Panel

PCS Controller

Fuse

Circuit Breaker/Switch-

disconnector

BCP installation with Battery Racks

<DC Panel>

DDH + Fuse combinated type (Upper & Lower side component changeable)

<Ratings>(1) Un (Rated Voltage) : DC 1200V/1500V(2) In (Rated Current) : 800~4000A (Typical

1600A)(3) Icw (Rated short-time withstand

current) : 100kA/1s

Actual Panel Image

3D model

CASE Study : DC Switch-disconnector + Fuse type

Single-Line Diagram 3D model

CASE Study : DC Panel only type (External Control voltage supply)=> Circuit Breakers are applied for each DC circuit

BCP Supply References of LS ELECTRIC