Descriptive bulletin VersaPad™ Air-insulated dead-front ... · Descriptive bulletin | VersaPad 3...

VersaPad™Air-insulated dead-front padmount switchgear15-27 kV

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2 VersaPad | Descriptive bulletin

Table of contents

ABB VersaPad™ padmount switchgear ...................................................................................................................................3

Accessories .............................................................................................................................................................................6

Standards ................................................................................................................................................................................8

VersaPad ratings ......................................................................................................................................................................9

Style guide ............................................................................................................................................................................10

VersaPad three-line diagrams ................................................................................................................................................11

VersaPad dimensions

Four compartment enclosure dimensions ....................................................................................................................12

Two compartment enclosure dimensions .....................................................................................................................13

Notes .....................................................................................................................................................................................14

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Description

The ABB VersaPad padmount switchgear is a medium voltage

metal-enclosed switching product designed for outdoor instal-

lations.

The VersaPad is a dead-front design, where all energized com-

ponents are enclosed within an inner grounded steel compart-

ment, providing superior safety in comparison to the live-front

padmount designs. The dead-front feature enhances the opera-

tor safety since all active electrical devices are not accessible

after opening the enclosure doors. Contamination formation on

live parts are also reduced on a dead front design, increasing

the product reliability. The switch is operated through a side

pocket eliminating the need of exposure to high voltage during

routine switch operations. The padmount unit consists of three-

phase load-break switches and/or single pole fuses.

To improve safety and increase personnel protection, fuse ac-

cess doors are positively latched in the closed position and

mechanically interlocked to prevent access to fuses without

disconnecting and parking the 200 A load-break elbow.

VersaPad highlighted features

− Dead-front design providing added safety and higher

reliability.

− Industry standard footprint allows easy one to one replace-

ment of several field existing units.

− The VersaPad padmount switch utilizes the ABB VersaRupter

switch as the main component. The VersaRupter is a field-

proven switch applied worldwide with millions of units in

service. Technology, combined with the arc extinguishing

system, makes the VersaRupter the best load break switch in

the market.

− The bolted modular design facilitates maintenance and allows

for quicker field repairs.

− The cross bus is insulated using high quality heat-shrinkable

insulation tubing which provides superior insulation reducing

partial discharges and future flashovers besides contamina-

tion cumulation.

− All ABB padmount units are provided with a high grade

powder-coated finish. The powder-coated finish provides

durability for outdoor installations and increases product life.

Components

The VersaPad consists of four major components: enclosure,

loadbreak switches, fuses, and cable terminations.

Enclosure

As a result of a safety-driven project, the ABB VersaPad has a

number of features added into the design to make it highly tam-

per resistant, helping to protect the personnel and public alike.

The dead front enclosure improves the safety of the operator

when switching the device.

The VersaPad is manufactured using 11-gauge steel that pro-

vides high durability and rigidity. The unique modular design

makes it easier to service the units in the field or in the shop.

Enclosure features

− 11-gauge steel

− Modular design

− Insulated cross bus

− Stainless steel door latch housing

− Bolted construction

− Air-insulated

− Anti-condensation coating on inside of the roof

− Door handle made of heavy-duty cast aluminum

− Dead-front design

− Durable powder coating

− Automatic three-point door latch

− Large lexan window provides visual break of each load break

switch

− Switch lockable in open or closed position

− Padlock provision on switch pocket

− Switch pocket is made of stainless steel

Available enclosure options

− Mild steel, stainless steel, and aluminum enclosures

− Kirk-key interlocks

− Fault indicator provision

− Additional enclosure height

− Termination compartment separators in lexan or metal

ABB VersaPad padmount switchgear


VersaRupter - The ABB load break switch

The VersaPad utilizes ABB’s VersaRupter load-break switch.

The VersaRupter switch uses air blast arc extinction technol-

ogy which eliminates the need for additional insulation barriers

resulting in a reliable design. As the load breaking switching

device, responsible for opening the circuit, the VersaRupter

is the main component of the VersaPad padmount switch. In

combinations with industrial current limiting type fuses or expul-

sion type fuses, the VersaRupter switch ensures control over the

full range of overload and short-circuit current for underground

electrical distribution.

The VersaRupter Switch is well known around the world.

The switch delivers an advanced interrupting technology and

proven, dependable performance in a compact design. The de-

sign of the VersaRupter switch meets and exceeds up to three

times the mechanical endurance listed in ANSI C37.22-1997.

VersaRupter switch features

− Puffer arc extinguishing systems allows for a high number of

operations without excessive wear

− Tight phase spacing without the requirement for inter-phase

barriers

− Single spring snap action mechanism guarantee the switch

fast opening or closing avoiding arc during switching operati-

on and damage to the contacts

− 100 open/close operations on nominal current, and 1000

mechanical operations

VersaRupter switch ratings

Voltage (kV) Current (A)

Nom. Max. Power frequen-

cy Withstand

BIL Continuous

Short-time

Withstand,

RMS, Sym. @

2 sec

Momentary

Current RMS,

Asym

Fault Closing,

RMS, Asym

Fault Closing

& Momentary,

Peak

14.4 17 60 110 600 25000 40000 40000 65000

25 27 60 125 600 25000 40000 40000 65000


Fuse termination compartment

The VersaPad is offered with multiple mounting options for a

variety of industry-standard current limiting or expulsion type of

fuses. The fuse compartment is designed with multiple safety

precautions, including mechanical interlock at fuse access

doors that positively latch in the closed position to prevent ac-

cess to fuses without disconnecting and parking the load break

elbows. Each fuse is accessible only when fuse access door

has been unlatched and pivoted to the open service position.

Switch termination compartment

The VersaPad is provided with industry standard termination

compartments. The loadbreak switch is offered with 600 A

bushings (and can be offered with a 200 A bushing well), while

the fuse termination is offered with 200 A bushing wells.

Cross bus

The padmount switchgear utilizes an aluminum bus as standard;

however, a copper bus is optionally available.

All bus connection joints are nickel plated for aluminum and sil-

ver plated for copper bus. The cross bus is insulated using high

quality heat-shrinkable insulating tubing.

The cross busbars are connected to the VersaRupter (lower

terminations) by means of branch connections. Insulating boots

cover those joint connections.

Bus connections have full round edges and are rated at 600 A.

Bushings

Switch terminations can be fitted with standard bushings or

bushing wells upon request.

The VersaPad bushings meet the IEEE standard 386-1995

requirements for 15/27 kV devices.

The bushing is designed for use with another insulated con-

nector component such as a dead-break elbow. The bushings

are rated for 600 A and accept all standard separable insulated

connectors.

Bushing well

Each fuse termination is supplied with bushings wells, which

meet the IEEE standard 386-1995 requirements for 15/27 kV.

The bushing wells are rated for 200 A and accept most industry

standard connector component. ABB can supply the connector

component upon request.

Switch termination compartment Fuse termination compartment Cross bus


Fuses

The fusible element in the current-carrying protective device

melts when exposed to excess current. Optional fuses provide

a means to interrupt the current in the circuit when there is an

overload or short-circuit current. ABB offers the flexibility to use

the industry-standard fuses on the VersaPad design.

Fuse holder or end fitting

An assembly that provides a means of making contact between

the fuse and the contacts or clips of the fuse support.

Bushing insert

The bushing insert threads into a bushing well and provides the

same function as a integral load-break bushing. Bushing inserts

are designed for use with another connector component, such

as a load-break elbow.

Fault indicator

Fault indicators are used to monitor cable currents for fault

conditions. A sensor is mounted on the cable and an indicator is

mounted to the inside of the door and is visible from outside the

unit through a window. ABB does not provide fault indicators;

however, an optional fault indicator mounting provision can be

offered to facilitate the installation of a fault indicator in the field.

Key interlock

Kirk Key interlocks ensure a pre-determined sequence of opera-

tions to prevent personnel injuries and equipment damage due

to improper operation.

Three different industrial interlocks are available:

− To prevent paralleling of switches in compartments 1 & 2*,

and to keep the load fed from either source, two single-key

lock assemblies, and one key are provided (Model 6, 9, 10,

11, 13)

− To prevent opening the fuse termination compartment doors

unless all switches are locked open, two single-key lock as-

semblies, one double-key lock assembly, and two keys are

provided (Model 5, 6, 9, 11)

− To prevent paralleling of switches in compartments 1 & 2,

and opening the fuse termination compartment doors unless

all switches are locked open, three single-key lock assem-

blies, and one key are provided (Model 6, 9, 11)

Fuse storage

Provisions located in the fuse termination compartment doors

for storing spare fuses or end-fittings are optionally available.

Please consult your ABB sales representative for more informa-

tion on the accessories available for the VersaPad padmount

switch.

*See compartment division on page 11.

Accessories


The ABB padmount switch and all major components comply

with the following standards:

− IEEE C37.74-2003 Standard Requirements for Subsurface,

Vault, and Pad-Mounted Load-Interrupter Switchgear and

Fused Load-Interrupter for Alternating Current Systems up to

38 kV

− IEEE C57.12.28 - 2005 Standard for Pad-mounted Equip-

ment – Enclosure Integrity

− IEEE 386-1995 Standard for Separable Insulated Connector

Systems for Power Distribution Systems above 600 V

− IEEE C37.20.4-2001 Standard for AC Switches (1 kV-38 kV)

for Use in Metal-enclosed Switchgear

− IEEE C37.22-1997 American National Standard Preferred

Ratings and Related Required Capabilities for AC Medium-

Voltage Switches Used in Metal-Enclosed Switchgear

Fully type-tested

The ABB VersaPad passed all tests required by IEEE standard

C37.74-2003.

IEEE type test

− Dielectric: Power-frequency withstand voltage and lightning

impulse withstand voltage

− Continuous current

− Short-circuit current: rated peak withstand current and short-

time withstand current

− Partial discharge level

− DC withstand voltage

IEEE production test (routine factory)

− Visual inspection and check

− Mechanical sequence operations

− Circuit resistance

− Power-frequency withstand voltage

Each padmount unit is subjected to production tests before

delivery.

Standards


VersaPad ratings

Fuse

VersaRupter

cont. (A)

Voltage, KV Current (A), RMS, Sym.

MVA 3-phase

Sym. at nom.

voltage

ModelType Max.

(A)

Nom. Max. BIL VersaRupter @ 2

sec. (X/R=17)

Main Bus

@ 1 sec.

(X/R=17)

Fuse Max.

Interrupt-

ing (X/

R=15)

Pad-

mounted

Gear

SM-20

200

600 14.4 15 95 25000 25000 14000 14000 350

105, 106, 109,

111

200

600 25 27 125 25000 16000 12500 12500 540

205, 206, 209.

211

SM-4

200

600 14.4 15 95 25000 25000 12500 12500 310

105, 106, 109,

111

200

600 25 27 125 25000 16000 12500 12500 540

205, 206, 209.

211

NX

100

600 14.4 15 95 25000 25000 50000 25000 620

105, 106, 109,

111

40

600 23 27 125 25000 16000 50000 16000 640

205, 206, 209.

211

DBU

200

600 14.4 15 95 25000 25000 14000 14000 350

105, 106, 109,

111

200

600 25 27 125 25000 16000 12500 12500 540

205, 206, 209.

211

Without Fuses 600 14.4 15 95 25000 25000 - 25000 620 103, 110, 113

600 25 27 125 25000 16000 - 16000 690 203, 210, 213

* Ratings are for the load-break switch, main bus, 600 A bushings, bus connections, fuses, and may be limited by ratings of separable insulated connectors (bushing wells, bushing

inserts, elbows, T bodies) and customer MV cables installed.


Style guide

Digit * Description

1) P P: Padmounted

2) S S: Switch

3) Voltage ratings 1 1: 15 kV - BIL 95 kV

2: 27 kV - BIL 125 kV

4) & 5) Model 09 03: One Three-phase switch

(Please see three line diagram on

next page for each model)

05: One Three-phase switch and three single-phase fuse mounting

06: Two Three-phase switches and three single-phase fuse mounting

09: Two Three-phase switches and six single-phase fuse mounting

10: Four Three-phase switches

11: Three Three-phase switches and three single-phase fuse mounting

13: Three Three-phase switch, and one three-phase way solidly connected to the bus

6) Fuse compartment A N: Padmount with no fuse mounting (Model 3,10)

A: Fuse mounting for S&C SMU-20/Cutler-Hammer DBU fuses

B: Fuse mounting for S&C SM-4 fuses

C: Fuse mounting for Cooper type NX clip style fuses

7) Fault indicator N N: No fault indicating provisions provided (standard)

F: Provisions for mounting fault indicator with viewing window in each switch compartment door

Z: Other customer specified fault indicator mounting provision

8) Key interlock N N: No interlocks provided (standard)

1: Key interlocks to prevent paralleling of switches in compartments 1 & 2 (Model 6,9,10,11.13)

3: Key interlocks to prevent opening fuse termination compartment doors unless all switches are locked open

(Model 5,6,9,11)

4: Key interlocks, combines functions of options 1 & 3 (Model 6,9,11)

9) Spare fuse storage 1 N: None (standard)

1: Pocket for storing spare fuses in each fuse compartment door

2: Hangers for storing fuses & end-fittings assembly

10) Enclosure type M M: Mild steel enclosure (standard)

S: Stainless steel enclosure

A: Marine grade aluminum enclosure

11) Termination height S S: Low profile enclosure for installation on vaults or ground sleeves (standard termination height)

1: Spacer providing 6 inches of additional height for mild steel enclosure

2: Spacer providing 12 inches of additional height for mild steel enclosure

3: Spacer providing 6 inches of additional height for stainless steel or aluminum enclosure

4: Spacer providing 12 inches of additional height for stainless steel or aluminum enclosure

12) Paint S S: Guardian Green Munsell 7GY3.29/1.5 (standard)

G: ANSI-70 Gray

Z: Special paint color (contact factory)

13) Bushings S S: 600A bushings for switch/termination compartments (standard)

2: 200A bushing wells for switch/termination compartments

14) Bus material S S: Aluminum bus (standard)

C: Copper bus

15) Segregated compartment N N: None (standard)

L: Lexan barriers which isolate adjacent cable compartments (Model 6,9,10,11.13)

M: Metal barriers which isolate adjacent cable compartments (Model 6,9,10,11.13)

16) Future N

17-18) Specific to unit will change

last two digits of style number

00

*Note: Style number PS109ANN1MSSSSNN00 stands for padmount switch, 15 kV, model 09, with SMU-20/DBU fuse mounting, pocket for storing spare fuses, mild steel enclosure, with

standard termination height, standard paint, 600 A bushings, and aluminum bus


VersaPad three-line diagrams

1 2 3

1 2 3

3 2 1

21 3 2 1

123321

3 21 3 2 1

123321

3 21 3 2 1

123321

3

21 3 2 1

123321

3


VersaPad dimensionsFour compartment enclosure dimensions

EFFA

E FF

2.000 TYP.

Ø1 Anchor hole (4x)J

J

1 2

Top View

B

3 3 2 1

GHHG HH

E FF FF EA

L

K

321 3 2 1

G HH HH GA

M

K

Fuse Cable CompartmentSwitch Cable Compartment

321 3 2 1

1 2 3 3 2 1

D (fuse)

C(switch)

C (switch)

Note: The ABB VersaPad is a direct replacement for many existing units in the field.

Model A B C D E F G H J K L M

106, 109 75 66.75 20 14 11.5 8.25 10.75 10.75 3.5 45 35 33

110, 111, 113 75 72.75 20 14 11.5 8.25 10.75 10.75 3.5 45 35 33

206, 209 84 81.75 24 17 11.25 10.75 12 12 3.5 51 39.5 38.75

210, 211, 213 84 88.25 24 17 11.25 10.75 12 12 3.5 51 39.5 38.75


VersaPad dimensionsTwo compartment enclosure dimensions

EA

E FF

2.000 TYP.

Ø1 Anchor hole (4x)J

J

1 2

Top View

B

3

GG HH

E FF EA

L

K

321

G HH GA

M

K

Fuse Cable CompartmentSwitch Cable Compartment

321

1 2 3

D (fuse)

C(switch)

Note: The ABB VersaPad is a direct replacement for many existing units in the field.

Model A B C D E F G H J K L M

103, 105 39.5 66.75 20 14 11.5 8.25 7.25 10.75 3.5 45 35 33

203, 205 44 81.75 24 17 11.25 10.75 8 12 3.5 51 39.5 38.75


Notes

Contact us

1V

AL

22

48

02

-DB

Rev

A A

ug

ust

20

12For more information about our Feeder Automation

products, news, downloads, and Feeder Automation Users

Group website registration, please contact:

[email protected].

All sales are subject to ABB Inc.

General Terms and Conditions of Sale.

While every effort has been made to assure accuracy, the

information in this document is subject to change without

notice.

© Copyright 2012 ABB Inc. All rights reserved.

ABB Inc.

655 Century Point

Lake Mary, FL 32746

Phone: +1 407 732 2000

Customer service: +1 800 929 7947 ext. 5

+1 407 732 2000 ext. 5

E-Mail: [email protected]

www.abb.com/mediumvoltage

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