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Emerson Asco 7000 Series Operator's Manual

Atb automatic transfer & bypass–isolation switches
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Operator's
Manual
TABLE OF CONTENTS
INSTALLATION
. . . . . . . . . . . . . . . . . . . . . . . .
Mounting
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Connections
Engine Starting & Auxiliary Circuits
Functional Test
. . . . . . . . . . . . . . . .
TESTING & SERVICE
Transfer Test
. . . . . . . . . . . . . . . . . . . . . . . . . .
Preventive Maintenance
Disconnecting the Controller
Manual Load Transfer
Trouble-Shooting
. . . . . . . . . . . . . . . . . . . . . .
BYPASSING & ISOLATING
Bypassing the ATS
Isolating the ATS
. . . . . . . . . . . . . . . . . . . . . .
Return to Service
. . . . . . . . . . . . . . . . . . . . . .
INDEX
. . . . . . . . . . . . . . . . . . . . . . . . .
An experienced licensed electrician must install ATB
Typical 7000 Series ATB catalog no. for overlapping neutral, 3 pole, 4000 amp, 480 V, in Type 1 enclosure:
7ATB
Neutral
A
– solid
C
– overlapping
blank --- none
ASCO POWER TECHNOLOGIES CANADA PO Box 1238, 17 Airport Road, Brantford, Ontario, Canada N3T 5T3
telephone 519 758–8450, fax 519 758–0876, for service call 1 888 234–2726 (ASCO)
Bypass–Isolation Switches
F–design, 3000 and 4000 amp. sizes
section-page
1-1
1-1
. . . . . . . . . . . . . . . . . . . .
1-2
. . . . . .
1-2
1-5, 1-6, 1–7
. . . . . . . . . . . . . . . . . .
2-1
2-1
. . . . . . . . . . . . . . . .
2-1
. . . . . . . . . . . .
2-1
. . . . . . . . . . . . . . . . . .
2-2
2-2
. . . . . . . . . . . . . .
3-1
. . . . . . . . . . . . . . . . . . . .
3-1
3-1
3-3
back cover
Catalog Number Identification
C
3
Phase Poles
Amperes
2
– single Ø
3
– three Ø
50 Hanover Road, Florham Park, New Jersey 07932–1591 USA
1 800 937–2726 (ASCO), for service call 1 800 800–2726 (ASCO) www.asco.com
7000 Series ATB
Automatic Transfer &
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.
Each 7000 Series ATB 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:
4000
N
Voltage
A
J
3000
115
4000
B
K
120
C
L
208
D
M
220
E
N
230
F
P
240
G
Q
277
H
R
380
Rating Label
!
Nameplate
5
C
Controller
5
– standard
400
5X
– if accesso-
415
ries ordered
440
460
480
550
575
600
381333–133 A
www.asco.ca
Enclosure
C
– type 1
F
– type 3R
G
– type 4
L
– type 12
blank – open type

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Summary of Contents for Emerson Asco 7000 Series

  • Page 1 7000 Series ATB Operator’s Automatic Transfer & Manual Bypass–Isolation Switches F–design, 3000 and 4000 amp. sizes Refer to the outline and wiring drawings provided with your 7000 Series ATB for all installation and TABLE OF CONTENTS connection details and accessories. section-page INSTALLATION .

  • Page 2: Installation

    SECTION 1 INSTALLATION Mounting The ASCO 7000 Series Automatic Transfer & Bypass– Isolation Switch (ATB) consists of an upper bypass–isola- Refer to the enclosure outline drawing furnished with tion switch, a transfer switch, a monitoring and transfer this switch and mount the 7000 Series ATB according to controller, and door–mounted controls.

  • Page 3: Bus Connections

    INSTALLATION (continued) Connecting Power Conductors Bus Connections A Wiring Diagram is furnished with the ATB. All wiring If bus connection is used, use SAE grade 5 hardware to must be made in accordance with the local codes. After connect bus to appropriate terminal plates on bypass the power cables have been tested, connect them to the switching device.
  • Page 4 INSTALLATION (continued) Install the Transfer Switch Remove interference tag after making inspection After the enclosure is installed and power cables or bus on page 1-4. connected to the Bypass Switch, the Transfer Switch carriage can be rolled in. The floor of the cabinet must be solenoid lock free of debris and clean.
  • Page 5 INSTALLATION (continued) Inspection 1 sensing lead contact Do not force the Isolation Handle. Be sure that stab the sensing lead isolation contacts do not hit the isolation contacts male stabs head on, but rather slide on them. Figure 1–5. Isolation contacts in TEST position. Move ATS from DISCONNECTED To TEST Position (without electrical power) Action...

  • Page 6: Functional Test

    INSTALLATION (continued) Automatic Transfer & Bypass–Isolation Switch Transfer Transfer Switch Control Transfer Switch 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 1-8. Standard controls and indicators. Close the normal source circuit breaker.

  • Page 7: Manual Operation Test

    INSTALLATION (continued) 2 – Manual Operation Test This procedure will check the manual operation of the Bypass Switch, Isolation Switch, and Transfer Switch. Observe the lights on the Status Indicator panel. The Bypass Switch CLOSED ON NORMAL and the TEST lights should be on.

  • Page 8: Electrical Operation

    INSTALLATION (continued) Automatic Transfer & Bypass–Isolation Switch 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 1-13.

  • 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 or- Series ATB at least once a month. This procedure checks dering parts provide the Serial No., Bill of Material No. the electrical operation of the Transfer Switch and (BOM), and Catalog No.

  • Page 10: Troubleshooting

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

  • Page 11: Section 3 Bypassing & Isolating

    SECTION 3 BYPASSING & ISOLATING BYPASSING ISOLATING This procedure explains how to isolate the Automatic This procedure explains how to Bypass the closed Transfer Switch. Isolating is required before any service Automatic Transfer Switch contacts. Bypassing is re- work can be performed on the ATS. Observe the ATS quired before the ATS can be tested or isolated.
  • Page 12 BYPASSING & ISOLATING (continued) TRANSFER SWITCH REMOVAL TRANSFER SWITCH REINSTALLATION This procedure explains how to remove the Transfer This procedure explains how to install the Transfer Switch Switch for inspection and maintenance. after inspection and maintenance. 1. Bypass and Isolate the Automatic Transfer Switch by carefully following directions on page 3–1.
  • Page 13 BYPASSING & ISOLATING (continued) RETURN TO SERVICE This procedure explains how to return the Automatic Transfer Switch to service after inspection and maintenance. Observe the ATS POSITION lights on the STATUS INDICATOR panel. 1. Install the Transfer Switch into the enclosure. Carefully follow directions on page 3–2.
  • Page 14 INDEX inspection, 1–4, 3–1 rating label, cover auxiliary circuits, 1–2 installation, 1–1, 1–3 replacement parts, 2–1 isolating the ATS, 3–1 return to service, 3–3 bus connections, 1–2 lights, 1–5, 1–6 bypassing the ATS, 3–1 service load connected to emergency, 1–5 ASCO Services, Inc.

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