Asco 300 Series Operator's Manual
Automatic transfer switches
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Also See for 300 Series:
- Operator's manual (21 pages) ,
- Operation and maintenance (12 pages) ,
- Installation & operation manual (12 pages)
Table of Contents
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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.
An experienced licensed electrician must install the ATS.
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)
E design, 260 and 400 amp. sizes
260 & 400 amp sizes
50 Hanover Road, Florham Park, New Jersey 07932–1591 USA
For sales or service call 1 800 937–2726 (ASCO)
Series 300
Automatic Transfer Switches
Refer to the outline and wiring drawings provided with
your ASCO Series 300 ATS for all installation details.
ASCO Series 300 Automatic Transfer Switches (ATSs) are
Listed under Underwriters Laboratories UL 1008 Standard
for Safety for Automatic Transfer Switches. ASCO Series
300s are also Listed under CSA C22.2 No. 178 Standard for
Automatic Transfer Switches. All control features are UL
Component Recognized, which assures that ASCO automatic
transfer switches meet OSHA Safety Requirements and will
be acceptable to electrical inspectors.
ASCO Series 300 Automatic Transfer Switches are suitable
for emergency and standby system applications. They meet
emergency system rating requirements as defined in
National Electrical Code (NEC) Article 700 and UL 1008.
Also, they are suitable for the requirements of NEC Article
517 – Health Care Facilities, NEC Article 701 – Legally
Required Standby Systems, NEC Article 702 – Optional
Standby Systems, NFPA 99 Health Care Facilities, and
NFPA 110 Emergency and Standby Power Systems.
Each automatic transfer switch 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.
INSTALLATION
SEQUENCE OF OPERATION
TESTING & SERVICE
ADJUSTMENTS
CONTROL FEATURES
INDEX
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www.ascopower.com
Rating Label
TABLE OF CONTENTS
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381333–067 H
www.asco.ca
section
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back cover
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Table of Contents
Related Manuals for Asco 300 Series
Summary of Contents for Asco 300 Series
- Page 1 381333–067 H For sales or service call 1 800 937–2726 (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) www.asco.ca...
- Page 2 Nameplate and Catalog Number Identification The Transfer Switch nameplate includes data for each specific ASCO Series 300 ATS. Use the ATS only within the limits shown on this nameplate. A typical Catalog Number is shown below with its elements explained.
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Page 3: Installation
Testing Power Conductors Protect the switch from construction grit and metal chips to prevent malfunction or Do not connect the power conductors to the ASCO Series shortened life of the automatic switch switch. 300 transfer switch until they are tested. Installing power... -
Page 4: Engine Starting Contacts
INSTALLATION (continued) Engine Starting Contacts Controller Ground The engine control contact connections are located on the A grounding wire must be connected to the controller’s transfer switch. Connect signal wires to appropriate term– lower left mounting stud. Because the controller is inals as specified in Table A, shown in Figure 1–2. -
Page 5: Functional Test
INSTALLATION (continued) Functional Test The Functional Test consists of three checks: manual operation, voltage checks, and electrical operation. maintenance Do these checks in the order presented to avoid damaging the automatic transfer switch. handle hole Read all instructions on the Wiring Diagram and labels affixed to the automatic transfer switch. -
Page 6: Voltage Checks
INSTALLATION (continued) observe these lights Figure 1–5. Standard controls and indicators. 2 – Voltage Checks Close the normal source circuit First check nameplate on transfer switch; rated voltage Source Accepted breaker. The Normal Transfer must be the same as normal and emergency line voltages. Switch Position and the Normal Normal Source Accepted lights should... -
Page 7: Electrical Operation
Normal Transfer Switch position. The Normal Transfer Position This completes the Functional Test of the ASCO Series 300 Switch Position light should Normal Automatic Transfer Switch. Leave the engine–generator come on and the Emergency Emergency starting control in the automatic position. -
Page 8: Section 2 Sequence Of Operation
SECTION 2 SEQUENCE OF OPERATION Lights show position of transfer switch. Lights show the sources accepted. Transfer To Emergency Light for built–in engine exercise timer: The sequence for load transfer to blinks rapidly when emergency source begins automati- button is held 5 sec. cally when normal source voltage while being set falls below the preset dropout point... -
Page 9: Section 3 Preventive Maintenance
Serial and Catalog Nos. from the transfer switch name- after the Retransfer to Normal Delay. For immediate plate. Contact ASI. In the US call 1–800–800–ASCO retransfer, press Bypass Time Delay button. Place the (2726), or in Canada call 1–888–234–ASCO (2726). -
Page 10: Manual Load Transfer
Delay button. Then disconnect the voltmeter. about twice system voltage. If the problem is isolated to circuits on the controller or the transfer switch, call your local ASCO Power Technologies sales office, representative, or ASI. In United States, call 1–800–800–2726 or email customercare@asco.com. In Canada, call 1–888–234–2726. -
Page 11: Section 4 Adjustments
SECTION 4 ADJUSTMENTS Time Delay Adjustment To change a setting, follow procedure on page 4-2. Use Table 4-1 as a guide to time delay values and their corre- Standard time delays are set to customer specifications sponding adjustment DIP switch or potentiometer. (if none specified, standard factory settings are used). -
Page 12: How To Change A Setting
ADJUSTMENTS (continued) cover thumb Do not make any setting changes latch while the controller is energized. How to Change a Setting 1. Prevent the transfer switch from operating by discon- hook on left side necting one source first, then the other, as follows: If the transfer switch is in the Normal position, open the emergency source circuit breaker. - Page 13 20 minutes, or follow the recommendations of the engine-generator set manufacturer. Refer to page 4–2 for location of DIP switches, battery (provided), and jumper block in the controller. BUILT–IN ENGINE EXERCISER DIP Switch Settings The engine exerciser included in ASCO Series 300 S1 DIP S2 DIP FUNCTION...
- Page 14 CONTROL FEATURES (continued) Optional Accessory 11BG – SOURCE AVAILABILITY SIGNAL & PROGRAMMABLE ENGINE EXERCISER MODULE 2–line display connections for source availability signal contacts 3 buttons Figure 5–2. Accessory 11BG module (mounted behind operator interface and connected to the controller) includes source availability signal contacts and a programmable engine exerciser. Source Availability Signal Contacts The module provides one Form C contact each for the normal and emergency sources signal the acceptability of...
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Page 15: Navigating The Menu
CONTROL FEATURES (continued) How to Set Optional Programmable Engine Exerciser (part of Acc. 11BG module) For example, if the user wants the exerciser to run every other Saturday at 3 PM, the proper configuration would Hazardous voltage capable of causing shock, burns, or death is used in this transfer switch. -
Page 16: Remote Control Features
CONTROL FEATURES (continued) INPHASE MONITOR LOAD DISCONNECT FEATURE FOR MOTOR LOAD TRANSFER Connect external circuits to the terminals indicated on the Wiring Diagram provided with the ATS. Inphase monitoring logic controls transfer and retransfer of motor loads, so that inrush currents do not exceed The double throw (Form C) contact is rated for 28 VDC or normal starting currents. - Page 17 Turn the thermostat’s dial to required setting as shown. turn clockwise to raise temperature Figure 5–4. Thermostat. AVAILABLE KITS FROM ASCO Controls Strip Heater – Accessory 44 Description Accessory Description Accessory...
- Page 18 4–1 contacts, 5–2, 5–3 settings, 4–1 serial communication module, 5–5 voltage, pickup and dropout settings, functional test, 1–3, 1–4, 1–5 strip heater, 5–5 4–1 Copyright --- ASCO Power Technologies, L.P . 2007 Printed in U.S.A.
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Questions and answers
Can I flip the contactor so the load terminals are on the bottom?
have a ASCO 300 SERIES TRANSFER SWITCH 3ATS & 3NTS J-Design 260-600 A
The ASCO 300 Series transfer switch must be mounted vertically to a rigid supporting structure. The documentation does not specify that the load terminals can be positioned at the bottom, so it should be installed as instructed to ensure proper operation.
This answer is automatically generated