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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
telephone 519 758-8450, fax 519 758-0876, for service call 1 888 234-2726 (ASCO)
7000 Series 7ADTB
Automatic Delayed-Transition Transfer
& Bypass-Isolation Switches
J design 150 through 600 amp.
Refer to the outline and wiring drawings provided
with your 7000 Series ADTB 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
7ADTB.
Each 7000 Series 7ADTB contains a rating label to
define the load 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
Power Connections
Engine Starting & Auxiliary Circuits
Rating Label
or serious equipment damage.
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www.asco.ca
section-page
1-1
1-1
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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
3-5, 3-6, 3-7
back cover
381333-309
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Table of Contents
Related Manuals for ASCO POWER TECHNOLOGIES 7ADTB
Summary of Contents for ASCO POWER TECHNOLOGIES 7ADTB
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Page 1: Table Of Contents
& dropout settings, and adjustments. An experienced licensed electrician must install the 7ADTB. Each 7000 Series 7ADTB contains a rating label to define the load and fault circuit withstand/closing ratings. Refer to the label on the Transfer Switch for specific values. -
Page 2: Standard Controls
The Transfer Switch nameplate includes data for each specific 7000 Series ADTB. Use the switch only within the limits shown on this nameplate. A typical Catalog Number is shown below with its elements explained. J7ADTB Neutral Phase Poles – solid –... -
Page 3: Installation
Standard terminal lugs are solder- less screw type and will accept the wire sizes listed on the drawings provided with the 7ADTB. Be careful when stripping insulation from the cables; avoid nicking or ringing the conductor. Remove surface oxides from cables by cleaning with a wire brush. -
Page 4: Functional Test
The Functional Test consists of two checks: 1 — Voltage Checks, page 1–3 2 — Electrical Operation, page 1–4 Do these checks in the order presented to avoid damaging the 7ADTB. INSTALLATION (continued) Figure 1-1. Customer terminal block on the top right... - Page 5 Figure 1-2. Standard controls and indicators. Functional Test Read all instructions on the Wiring Diagrams and labels affixed to the 7ADTB. Note the control features that are provided and review their operation before proceeding. After installing the 7ADTB check the following: –...
- Page 6 Black square means light is on. White square means light is off. 3. Turn the Isolation Handle clockwise to the CONN (connected) position. Turn Bypass Handle clockwise to the OPEN position. This completes the Functional Test of the 7ADTB. INSTALLATION (continued) this switch AMBER...
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Page 7: Testing & Service
Perform the five–step Electrical Operation – Transfer Test procedure on page 1–4. PREVENTIVE MAINTENANCE Reasonable care in preventive maintenance will insure high reliability and long life for the 7000 Series 7ADTB. An annual preventive maintenance program is recom- mended. ASCO Services, Inc. (ASI) is ASCO Power Technologies’s national service organization. -
Page 8: Trouble-Shooting
* These are factory settings. Refer to Controller’s User’s Guide. If the problem is isolated to circuits on the controller or the transfer switch, call your local ASCO Power Technologies sales office or ASI: in the United States, call 1–800–800–2726 or in Canada call 1–888–234–2726. Furnish the Serial No., Catalog No., and Bill of Material (BOM) No. - Page 9 Figure 2–2. Maintenance handle operation for Emergency source contacts (upper shaft). handle frame shaft externsion Figure 2–3. Maintenance handle operation for Normal source contacts (lower shaft). Table C. Maintenance handle positions. Transfer Switch Position Normal Normal Load Load Disconnected Emergency Emergency * Link between contact shafts prevents closing both N and E contacts.
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Page 10: Bypassing & Isolating
This procedure explains how to Bypass the closed transfer switch contacts. Bypassing is required before the Transfer Switch can be tested or isolated. The Bypass Switch Handle must be in the OPEN position (green window indicator) and the Isolation Handle must be in the CONN [connected] position (window indicator). - Page 11 Figure 3–6. Status light and window indicator for Bypassed to Normal Source. The automatic transfer switch can now be put in the TEST or OPEN position. See ISOLATING on page 3–3. * NOTE: When Accessory 40*B (reversed Normal & Emergency connections) is specified, the handle operation is reversed.
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Page 12: Isolating The Ats
BYPASSING & ISOLATING ISOLATING THE ATS Isolating is required before any service work can be performed on the automatic transfer switch (ATS). Refer to Figures 3–9, 3–10, 3–11, and 3–12. 1. Bypass the closed automatic transfer switch contacts. See BYPASSING on pages 3–1 and 3–2. - Page 13 4. Open the lower enclosure door. Pull out both left and right side rails then use the two tab handles to roll out the transfer switch. It can be safely inspected in this position. The transfer switch can also be removed for easier maintenance operations.
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Page 14: Return To Service
5. Observe which Transfer Switch Connected To light is on (Normal or Emergency) on the door. This is the position of the Transfer Switch. If it is not in the same position as the Bypass Handle change the position of... - Page 15 Do not close the isolation contacts unless the Transfer Switch (ATS) and Bypass Switch are in the same position! 6. When the transfer switch is in the same position as the Bypass Switch handle, continue turning the Isolation Handle clockwise (about 8 turns) until the window shows CONN (connected).
- Page 16 Figure 3–21. Un–Bypass Normal diagram. The Automatic Transfer & Bypass–Isolation Switch should be left in this position. * NOTE: When Accessory 40*B (reversed Normal & Emergency connections) is specified, the handle push–pull operation is reversed. Follow instructions on the door.
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Page 17: Index
1–1 interlocked weights, 2–3 interphase barriers, 3–4, 3–5 isolating the ATS, 3–3, 3–4 lifting device, transfer switch, 3–4 lights, 1–2, 1–3, 3–1, 3–2, 3–3 load connected to emergency, 1–3 load connected to normal, 1–3 Load Disconnect Active light, 1–4 lubrication, 2–1...