1. Manuals
  2. Brands
  3. Emerson Manuals
  4. Switch
  5. ASCO 7000 Series
  6. Operator's manual

Emerson ASCO 7000 Series Operator's Manual

Automatic transfer & bypass-isolation switches
Hide thumbs Also See for ASCO 7000 Series:
Table of Contents

Quick Links

Operator's
Manual
DANGER is used in this manual to warn of high
voltages capable of causing shock, burns, or death.
WARNING is used in this manual to
warn of possible personal injury.
CAUTION is used in this manual to
warn of possible equipment damage.
50 Hanover Road, Florham Park, New Jersey 07932-1591 USA
For sales or service call 1 800 800-2726 (ASCO) www.ascopower.com
ASCO POWER TECHNOLOGIES CANADA PO Box 1238, 17 Airport Road, Brantford, Ontario, Canada N3T 5T3
G design 1000 through 4000 amp. sizes
4000 amp. size
7000 Series 7ATB
Automatic Transfer &
Bypass-Isolation Switches
Refer to the outline and wiring drawings provided
with your 7000 Series ATB for all installation and
connection details and accessories.
Refer to Group 5 Controller User's Guide 381333-126
for ATS status display messages, time delays, pickup
& dropout settings, and adjustments.
An experienced licensed electrician must install the
7ATB.
Each 7000 Series 7ATB contains a rating label to
define the loads and fault circuit withstand/closing
ratings. Refer to the label on the Transfer Switch for
specific values.
Do not exceed the values on the rating label.
Exceeding the rating can cause personal injury
or serious equipment damage.
The Transfer Switch nameplate includes data for each
specific 7000 Series ATB. Use the switch only within the
limits shown on this nameplate. A typical Catalog
Number is shown below with its elements explained:

TABLE OF CONTENTS

INSTALLATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Connections
Engine Starting & Auxiliary Circuits
. . . . . . . . . . . . . . . . . . . . . . . . .
Rating Label
Nameplate
section-page
. . . . . . . . . . . . . . . . . . . .
. . . . . .
. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
. . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .
back cover
381333-132 F
1-1
1-2
1-2
1-3, 1-4
2-1
2-1
2-1
2-2
2-2
3-1
3-2
3-3, 3-4
Table of Contents
loading

Related Manuals for Emerson ASCO 7000 Series

Summary of Contents for Emerson ASCO 7000 Series

  • Page 1: Table Of Contents

    7000 Series 7ATB Operator’s Automatic Transfer & Manual Bypass–Isolation Switches G design 1000 through 4000 amp. sizes Refer to the outline and wiring drawings provided with your 7000 Series ATB for all installation and DANGER is used in this manual to warn of high connection details and accessories.
  • Page 3 Catalog Number Identification Typical 7000 Series ATB catalog no. for overlapping neutral, 3 pole, 4000 amp., 480 V , in Type 1 enclosure: G7ATB 4000 Neutral Phase Poles Amperes Voltage Controller Enclosure 1000 – solid – single Ø – standard –...

  • Page 5: Mounting

    SECTION 1 INSTALLATION The ASCO 7000 Series Automatic Transfer & Remove Shipping Brackets / Angles Bypass–Isolation Switch (ATB) consists of an upper from the Transfer Switch bypass–isolation switch, a lower transfer switch, a Open the lower front door(s). The Transfer Switch monitoring and transfer controller, and door–mounted...
  • Page 6 INSTALLATION (continued) Bus Connections If bus connection is used, use SAE grade 5 hardware to De–energize the conductors before making any connect bus to appropriate terminal plates on bypass line or auxiliary circuitry connections. Be sure switching device. Wipe off bus surfaces before they are that Normal and Emergency line connections joined.

  • Page 7: Functional Test

    INSTALLATION (continued) Transfer Transfer Switch Transfer Switch Control Connected Connected Transfer Retransfer Test Delay HOLD FOR Normal Emergency Bypass 15 SECONDS GREEN observe Normal Emergency these lights Source Source Accepted Accepted GREEN Figure 1-2. Standard controls and indicators. Close the normal source circuit breaker.
  • Page 8 INSTALLATION (continued) Transfer Transfer Switch Control Transfer Switch Connected Connected Transfer Retransfer Test Delay HOLD FOR Normal Emergency Bypass 15 SECONDS operate GREEN this switch observe Normal Emergency these lights Source Source Accepted Accepted GREEN Figure 1-3. Standard controls and indicators. 2 –...

  • Page 9: Testing & Service

    SECTION 2 TESTING & SERVICE TRANSFER TEST REPLACEMENT PARTS Test the Automatic Transfer Switch portion of the 7000 Replacement parts are available in kit form. When Series ATB at least once a month. This procedure ordering parts provide the Serial No., Bill of Material checks the electrical operation of the Transfer Switch No.

  • Page 10: Manual Load Transfer

    TESTING & SERVICE (continued) TROUBLE-SHOOTING Hazardous voltage capable of causing Note any optional accessories that may be furnished on shock, burns, or death is used in this switch. the ATB and review their operation. Refer to any Do not touch the power or load terminals separate drawings and/or instructions that may be of the bypass switch or transfer switch! packed with the ATB.

  • Page 11: Bypassing & Isolating

    SECTION 3 BYPASSING & ISOLATING BYPASSING THE ATS* This procedure explains how to Bypass the closed You can only bypass to the same source automatic transfer switch contacts. Bypassing is that the Transfer Switch is connected. required before the ATS can be tested or isolated. The Solenoid interlock prevents incorrect operation.

  • Page 12: Isolating The Ats

    BYPASSING & ISOLATING (continued) ISOLATING THE ATS position Isolating is required before any service work can be CONN window performed on the automatic transfer switch (ATS). TEST Refer to Figures 3–4, 3–5, 3–6, and 3–7. ISOLATE 1. Bypass the closed automatic transfer switch contacts. See BYPASSING on page 3–1.
  • Page 13 BYPASSING & ISOLATING (continued) grasp two handles locking pin with clevis pin rail support carriage left support leg locking pin with clevis pin adjust length to touch floor right support leg Drawout procedure adjust length to touch floor 1. Bypass and Isolate the ATS, then open both lower doors. 2.

  • Page 14: Return To Service

    BYPASSING & ISOLATING (continued) RETURN TO SERVICE This procedure explains how to return the automatic Solenoid interlock prevents you from closing transfer switch (ATS) to service after inspection and the isolation contacts until the ATS is in the maintenance. Observe the Bypass Switch Position same position as the Bypass Switch.
  • Page 15 BYPASSING & ISOLATING (continued) RETURN TO SERVICE continued* This procedure explains how to return the Bypass You can only bypass to the same source Switch Handle to the OPEN position. The Bypass that the ATS is connected. Solenoid Handle must be in the CLOSED position (yellow interlock prevents incorrect operation.

  • Page 16: Index

    INDEX auxiliary circuits, 1–2 rating label, cover inspection, 3–1 removal of shipping angles, 1–1 installation, 1–1 removal of shipping skid, 1–1 isolating the ATS, 3–2 bus connections, 1–2 replacement parts, 2–1 bypassing the ATS, 3–1 return to service, 3–4, 3–5 lights, 1–3, 1–4 load connected to emergency, 1–4 service...

This manual is also suitable for:

Asco 7atb

Table of Contents