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INTRODUCTION
Transient voltage surges are short-term deviations from a desired voltage
level or signal that can occur at any time. Such changes can result in an
electronic device malfunction, or cause extensive damage. Also termed
"spikes" , these occurrences take place as a result of magnetic field/
inductive coupling or whenever the line current is interrupted. They can
originate from either inside a facility, or derive from outside utility lines.
Sources within a facility involve loads that are switched, such as electric
motors that are turned ON and OFF. Outside transient influences involve
utility grid switching.
DESCRIPTION
Leviton Panel Mounted devices are designed to provide protection for
microprocessor-based equipment in industrial and commercial
establishments from high voltage transients.
SPECIFICATIONS
Ratings:
47120-7, 47120-4X7
47277-7, 47277-4X7
47347-7
• Listed to UL Standard 1449 (except 47347-7).
• CSA certified.
• IEEE C62.41-1991 Category A&B Combination Wave Suppression.
• Provides seven modes of protection: L-N (3), L-G (3), N-G (1).
• High-energy solid-state semi-conductor surge suppression circuitry per
phase. Each Line to Neutral, Line to Ground and Neutral to Ground.
• Each phase provided with independent thermal fuse protection.
GENERAL INFORMATION
• Green LED diagnostic indicator for each phase.
• Acoustic as well as visual indicators.
• Interior plastic circuit enclosure for added safety and easy servicing.
• Compatible with Decora Home Controls (DHC).
• Provided with Remote Monitoring Dry Contact (Form C Rated 30 VDC,
125 VAC, 3 Amps).
NOTES:
• Standard J-Box metal enclosure with pre-punched standard size
knockouts simplifies flush mounting in typical frame construction
environments, and provides convenient connection means to existing
branch panels.
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PK-92954-10-02-0A
4
1. El LED Verde en el PSTT debe estar ENCENDIDO.
2. Si durante una operación Normal el LED se APAGA, contacte a un
electricista calificado para determinar si hay energía en la Fase. Si
hay energía, entonces una sobretensión ha excedido la capacidad del
producto PSTT. La unidad se debe reemplazada y/o arreglar lo más
pronto posible.
120/208VAC, 3 Phase
47120-7
47277-7
277/480VAC, 3 Phase
47347-7
377/600VAC, 3 Phase
PARA OPERAR
Figura 1
Cableado del Panel de 7 Modos 3Ø
G
47120-4X7 / 47277-4X7
40
40
20
20
20
20
L3
20
20
L2
20
20
L1
Mantenga TODOS los
N
conductores de la
conexión lo más
cortos posible
Figura 2
Diagrama de Voltaje
47120-7 / -4X7
L- L
L- N
L- T
47277-7 / -4X7
L1
L2
L3
N
T
4/19/02, 11:28 AM
Panel Interruptor
de Circuitos
(Sin cubierta)
47347-7
3Ø
Page 19
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