Section 11: Switchboards and Switchgear PDF

Section 11: Switchboards and Switchgear PDF

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Air-Insulated Switchgear for Primary Distribution

Class 6055 / Refer to Catalog 6055CT9901

SureSeT™ Medium Voltage Metalclaid Switchgear (UL Listed)

Product Description

Schneider Electric’s Square D SureSeT™ metal-clad switchgear powered by EvoPacT™ vacuum circuit breakers provides control and protection of medium voltage power equipment.

SureSeT offers a two-high breaker design in a narrow 26 in. wide footprint that is fully compartmentalized for breaker, auxiliary equipment, and low voltage compartment. SureSeT is designed to be configured in various combinations to meet customer requirements. It is enabled with Circuit Breaker Monitoring.

SureSeT switchgear with EvoPacT circuit breakers is tested in accordance with ANSI C37.20.2. EvoPacT circuit breakers are tested per ANSI C37.09. SureSeT and EvoPacT are UL and cUL listed.

Smart Through Design

  • EvoPacT breaker tested to 30,000 breaker open/close operations and 1,000 breaker racking operations

  • SureSeT switchgear uses only Schneider Electric in-house designed key components: breaker mechanism, vacuum interrupter bottles, contact, etc.

  • Breaker designed with integrated racking mechanism allowing for ease of maintenance

  • Fillable frame design for low voltage compartments. That is, the original equipment manufacturers (OEM) and panel builders can wire low voltage devices ahead for ease of assembly.

  • Circuit breaker health monitoring uses sensors embedded within the circuit breaker to measure strategic data of the most critical points including:

    • Thermal monitoring of circuit breaker primary connections

    • Operating speed of circuit breaker mechanism

    • Vacuum interrupters contact erosion gap

    • Health of closing and tripping coils

    • Health of spring charging motors

    • Health of circuit breaker/VT/CPT racking motors, when equipped

    Alarms and notifications are displayed on the HMI screen when action is required.

For more information on this product, contact your Schneider Electric sales representative.



Ratings

Maximum Voltages

4.76 kV, 15 kV

Continuous Current – Circuit Breakers

1200 A, 2000 A

Continuous Current – Main Bus

2000 A

Symmetrical Interrupting Capacity

25 kA, 40 kA

Basic Impulse Level

95 kV, peak (impulse) dielectric withstand

Enclosure

NEMA Type 1 – Indoor enclosure

Paint Color

White RAL 9003 finish standard. Additional colors selectable with customer provided paint sample with additional cost and lead time.

Standard Features


SureSeT is metal-clad switchgear as defined by ANSI C37.20.2 and includes:

  • Withdrawable circuit breakers

  • Fully compartmentalized construction

  • Grounded metal barriers enclose all live components

  • Automatic shutters over primary contacts

  • Fluidized-bed epoxy insulated bus

  • Mechanical and electrical interlocks

  • Disconnect type voltage transformers or low power voltage transformers

  • Fixed control power transformer with draw out primary fuses

  • Grounded breaker truck in and between test-disconnected and connected positions

  • Low voltage control compartment isolated from primary voltage areas

  • Front and rear access required

Front view

Rear view
   

Legend

A

Auxiliary compartment – Position A

F

Human Machine Interface (HMI) screen (only available with Digital Monitoring package)

B

Auxiliary compartment – Position B

G

Control panel with local/remote switch, operational pushbuttons, and racking time delay

C

Low voltage compartment

H

Racking mechanism faceplate

D

Upper and lower circuit breaker compartment

I

Cable connections

E

Instruments can be mounted on the panel doors in front of the circuit breakers or auxiliary drawouts.

J

Busbar connection for auxiliary to main

For more details on circuit breaker cubicle, refer to the EvoPacT™ ANSI product range online.

Technical Characteristics

SureSeT Switchgear Characteristics

Main Characteristics

Brand

Square D™ by Schneider Electric

Range series of product

SeT Series

Range of product

SureSeT

Product or component type

Metal-Clad MV Switchgear

Insulation types

Group A – Bushings and stand-off insulators are molded fiberglass polyester.

Group B – Bushings are epoxy, stand-off insulators are porcelain.

Ratings of SureSeT switchgear with EvoPacT Series

Rated maximum voltage range available (kV rms)

5–15.0

Rated power frequency withstand range available (kV rms)

19–36

Rated lightning impulse withstand insulation levels available (kV peak)

60–95

Rated frequency (Hz)

60

Rated continuous current range available (A)

1200–2000

Rated momentary withstand current range available (kA peak)

65–104

Rated 2 second short-time withstand current (kA sym)

25–40

Enclosure category

B

Internal arc withstand

Non-Arc rated

RoHS compliant

Applicable

REACH compliant

Applicable

California Proposition 65

Applicable

Ambient and Operating Conditions

Type

Type 1 Indoor

Applicable Codes and Standards

cULus

Listed

IEEE

Compliant

NEMA

Compliant

CSA

Compliant

IEC/IEEE

Compliant

Seismic IBC / ASCE 7

Compliant

3–cycle interrupting rating

Rated

ANSI/IEEE C37.20.2, C37.09, C37.54, C37.55

Rated

Dimensions and Weight

Switchgear and Component Approximate Dimensions

Item

Description

A

Section Height

95 in. (2,413 mm)

B

Section Width

26 in. (660 mm)

C

Section Depth

92.5 in. (2,350 mm)

Class 6055 / Refer to Catalog 6055CT9901

Masterclad™ Medium Voltage Metalclad Switchgear (UL Listed)

The Reliability of a Quality Design

Listed Metalclad
Switchgear

Two-high Masterclad 5–27 kV
Indoor, Metalclad Switchgear

Masterclad™ offers a customizable solution for demanding medium voltage applications. Rugged construction is coupled with low maintenance 3-cycle vacuum circuit breaker.

A comprehensive design testing program has been performed by Schneider Electric. The switchgear and breakers are designed and tested in accordance with all applicable ANSI Standards C37.04, C37.06, C37.09, and C37.20.2. The switchgear and breakers meet the requirements of ANSI, IEEE, NEMA, and exceeds most IEC standards.

Ratings

Nominal voltage (kV)

4.16

7.2

13.8

24.9
Maximum voltage (kV)

4.76

8.25

15.0

27.0
BIL (kV)

60

95

95

125
Frequency (Hz)

50/60
Continuous amperes (A)

1200–4000

1200–2000
MVA (reference only)

250

350

500

500

500

750

1000

1500

1250

2000
Short-time rating (kA) 3 seconds

40

50

63

50

25

40

50

63

25

40
Close and latch rating (kA) (peak)

104

130

164

130

65

104

130

164

68

108

Type VR Vacuum Circuit Breaker

Vacuum VR Circuit Breaker
for Masterclad Switchgear

The VR breaker is a horizontal drawout type designed to provide long life, reduced maintenance, and ease of handling. The Type RI advanced design motor-charged stored energy mechanism is a model of reliability with simplicity-with an operating life exceeding ANSI requirements. The VR circuit breaker is UL labeled and includes a permanently mounted manual charging handle.

Standard features include:

  • 3-cycle interrupting rating

  • Rated per ANSI/IEEE C37.06, C37.09, C37.013, C37.54

  • UL Listed

  • Motor operated, spring-charged, stored-energy operating mechanism

  • Permanently mounted manual charging handle

  • Five normally open and normally closed auxiliary contacts

  • Wheels that roll directly to floor level from lower cell

Switchgear Construction

Masterclad 27 kV, Outdoor
Non Walk-in, Metalclad Switchgear

  • High-speed operation—3–cycles

  • Removable (draw-out) circuit breaker

  • Grounded metal barriers enclose all live parts

  • Automatic shutters driven by breaker racking mechanism

  • Closed door breaker position indication

  • Closed door breaker racking mechanism

  • Insulated main bus—aluminum or copper

  • Standard glass polyester insulators or optional epoxy and porcelain insulators

  • Mechanical interlocks

  • Disconnect type CPT and VT trucks

  • Grounded breaker truck in and between test/disconnected and connected positions

  • Low voltage instrument/control compartment isolated from primary voltage areas

  • Compliance to ANSI/IEEE standards C37.20.2 and C37.55 (designed and tested to comply with or exceed ANSI and IEEE standards)

  • ISO 9001 Certification (Designed and manufactured in a facility that is Quality Systems Certified by Underwriters Laboratories, Inc.® to ISO 9001)

  • Indoor NEMA 1 enclosure

  • Outdoor NEMA 3R enclosure

    • Walk-in enclosure

    • Non walk-in enclosure

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