Advertisement
Quick Links
S
I
URGITRON
AC SURGE PROTECTOR
Model 1456-85-L
480Y/277 Vac, 3-PHASE, 4-WIRE, GROUNDED WYE
INSTALLATION AND MAINTENANCE MANUAL
5900 Eastport Blvd., Bldg. V
Richmond, VA 23231-4453
Telephone (804) 236-3300
Facsimile (804) 236-4040
Excellence in Systems Protection
MAG/MNL145685L(NC)
Advertisement
Related Manuals for Joslyn 1456-85-L
Summary of Contents for Joslyn 1456-85-L
- Page 1 URGITRON AC SURGE PROTECTOR Model 1456-85-L 480Y/277 Vac, 3-PHASE, 4-WIRE, GROUNDED WYE INSTALLATION AND MAINTENANCE MANUAL 5900 Eastport Blvd., Bldg. V Richmond, VA 23231-4453 Telephone (804) 236-3300 Facsimile (804) 236-4040 Excellence in Systems Protection MAG/MNL145685L(NC)
- Page 2 TABLE OF CONTENTS I. SPECIFICATIONS II. INSTALLATION III. THEORY OF OPERATION IV. MAINTENANCE MAG/MNL145685L(NC)
- Page 3 II. INSTALLATION JOSLYN AC Surge Protector MODEL 1456-85-L is intended for installation on power systems of 480Y/277 Vac, 4 wires plus ground, 3 phase, grounded wye, 50-60 Hz, unlimited kVA rating. It is intended to be installed at the service entrance.
- Page 4 Figure 2 for details. III. THEORY OF OPERATION The purpose of the Joslyn AC Surge Protector, Model 1456-85-L, is to clamp the voltage whenever instantaneous (surge) voltage on any phase exceeds a level of approximately 500 volts peak. The protector responds in nanoseconds, and automatically restores itself to normal condition after termination of the surge condition.
- Page 5 IV. MAINTENANCE The Joslyn AC Surge Protector, Model 1456-85-L, requires no scheduled maintenance. Except for the relay contacts in the monitoring circuit, there are no moving parts. There are no adjustments to make. Simple electrical tests will indicate the condition of the unit.
- Page 6 Disconnect power. Remove the relays and light bulbs on the phase to be tested. Use a suitable Surge Protector Test Set capable of measuring the 1 mA clamping Joslyn voltage of MOV-type components, such as Model 4010, and connect test leads between the phase A, B or C terminal and the neutral terminal.
- Page 7 Figure 1 Outline of Supplied NEMA 4 Enclosure MAG/MNL145685L(NC)
- Page 8 Figure 2 Connection Diagram MAG/MNL145685L(NC)