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381333–086 D
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
Operator’s
Manual
Seri es 386
Non–Automatic Transfer Switches
E–d es ig n 260–400 A, G–des ig n 1000–3000 A
DANGER is used in this manual to warn of a
hazardous situation w hich, if not avoided, will
result in death or serious injury.
WARNING is used in this manual to warn of a
hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION is used in this manual to warn of a
hazardous situation which, if not avoided, could
result in minor or moderate injury.
G–design 1000–1200 A sizes
Refer to the outline and wiring drawings provided with
the ASCO Series 386 N–ATS for all installation details.
Rating Label
Each non–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 e xceed the values on the rating label.
Exceeding the rating can cause personal injury or
serious equipment damage.
Identific ation Label
The identification label on the Transfer Switch includes
data for each specific ASCO Series 386. Use the switch only
within the limits shown on identification label.
An experienced licensed electrician must install the
Non–Automatic Transfer Switch (N–ATS).
TABLE OF CONTENTS
section-page
INSTALLATION 1-1........................
Mounting a nd Line Connections 1-1.........
Functional Test 1-2, 1-3.....................
SEQUENCE OF OPERATION 2-1...........
TESTING & SERVICE 3-1..................
Preventive Maintenance 3-1................
Transfer Test 3-1..........................
Trouble- Shooting 3-2......................
ADJUSTMENTS 4-1.......................
Sensor Adjustments 4-1...................
How to Change a Setting 4-1...............
OPTIONAL FEATURES 5-1.................
Motor Load Transfer 5-1...................
Load Disconnect 5-1......................
INDEX back of manual.....................