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Viper®-S Solid Dielectric Three Phase Recloser

Name: Viper-S Solid Dielectric Three Phase Recloser
Brand: G&W Electric

The Viper-S solid dielectric, three phase recloser combines the time proven reliability of electronically controlled-vacuum fault interrupters with the maintenance benefits of a solid dielectric insulated device. Designed with a mechanically ganged operator for three-phase automatic or manual trip operation providing overcurrent protection for systems rated up to 38kV maximum, 800A continuous current, and 12.5kA rms symmetrical interrupting, making it an exceptionally reliable viper recloser option for modern distribution networks.

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Features and Benefits

Reliable performance Reliable performance – Viper-S reclosers utilize G&W Electric’s time-proven epoxy polymer system to fully encapsulate the vacuum interrupters. This system provides excellent insulation properties while providing fully shielded, void-free construction, delivering the dependability expected from a 3-phase electronic recloser.
Ease of Installation The Viper-S is lightweight and compact. Site-ready designs provide all accessories including bracket, arresters and voltage transformers preassembled prior to shipment significantly reducing installation time for any viper recloser deployment.
Manual Trip and Lockout Operation For manual open and lockout operation, a handle is provided permitting hook stick operation. Pulling the handle down trips and locks out the recloser, ensuring safe handling of the three phase recloser during maintenance procedures.
Control Flexibility Viper-S three-phase reclosers are designed to work directly with the SEL-351R control along with a variety of control options upon request.
Power Grid Automation Ready The Viper-S is automation-ready, simplifying conversion for any future automation requirements. Options for adding multi-ratio current transformers for additional applications.

Configuration Details

Polemount Center Bracket
Polemount Alley-arm Bracket
Polemount Complete Site-Ready Assembly
Substation Mount Recloser
Padmount

Electrical Ratings Chart for Viper®-S

Maximum Design Voltage, kV	15.5	27	38
Impulse level (BIL), kV	110	125	150
Continuous & load break current, A	800	800	800
8-hour Overload, A rms at 20°C	960	960	960
60Hz Withstand, kV rms
– – – One minute (dry)	50	60	70
– – – 10 second (wet)	45	50	60
Radio Influence Voltage, microvolts 100 @	9.4kV	16.4kV	23kV
Interrupting Current, kA rms sym.	12.5	12.5	12.5
Making Current, kA asym. rms	20	20	20
Making Current, kA asym. peak	32	32	32
Short Circuit Current, kA sym., 3 second	12.5	12.5	12.5
Mechanical endurance, operations	10,000	10,000	10,000
Temperature range	-60°C to +65°C	-60°C to +65°C	-60°C to +65°C
*Consult factory for higher continuous current up to 1000A

Accessories

High Accuracy Sensors – Accusense Voltage Sensors

Controls – The Viper-S works directly with a variety of modern popular controls and many common legacy controls, ensuring seamless integration with any three phase recloser configuration.

SEL-651RA and SEL-651R2

The SEL-651RA is a direct replacement of the SEL-351R with a 14-pin interface and offers exceptional protection and communications capabilities for Automatic Network Reconfiguration and other distribution automation needs. These capabilities help you maintain reliable service to as many customers as possible in the event of a fault, especially when paired with a viper recloser.

Features:

Six voltage inputs support measurements on both sides of the recloser for advanced distribution automation and monitoring, making it an ideal companion to a 3-phase electronic recloser
Comprehensive communications protocols and interfaces ease integration into distribution automation systems

Beckwith M-7679

Beckwith’s M-7679 R-PAC Next generation Protection, Automation and Control System for Recloser, Switch, Sectionalizer and Distribution Automation Applications. This controller also supports configurations involving a three phase recloser.

Features:

Over 30 Protection Elements for optimal protection of Power Distribution Systems
Compatible with Three Phase (Standard) and Independent Phase capable Reclosers, Switches and Sectionalizers (Optional), supporting applications with any viper recloser
Four (Standard) or Six (Optional) Low Energy Analog (LEA) or VT voltage inputs
Settings Wizard assists in creating file for most common settings
Recloser Status Monitoring tool displays real time reclosing sequence and fault clearing time
Comprehensive I/O Matrix provides visual confirmation of enabled functions and selected outputs improving security
Embedded Cyber Security including:
- Role Based Security
- Complex passwords
- Individual user accounts with activity log
- IPSec (VPN) Tunnel
- Compatible with Radius password management systems
PQ Monitoring

Extended:

3500 Sequence of Event Records
100 Oscillographic Records (Up to 128 s/c & 480 Cycles each)
Over 2 years of data logging (at 5 min interval, adjustable)

SEL-751 Feeder Protection Relay

The SEL-751 provides complete protection for radial and looped distribution circuits. It offers arc-flash mitigation, fault location, high-impedance fault detection, broken conductor detection, and event analysis, making it a strong companion device for 3-phase electronic recloser applications.

Feeder protection
LEA sensor inputs
Sensitive neutral input
Arc-flash mitigation
High-Impedance fault detection
Reliable protection in harsh environments
Event analysis
Situational awareness
Fault location

Ingeteam INGEPAC™ DA PT Feeder Protection Relay

INGEPAC DA PT is a digital multifunctional protection relay providing comprehensive and detailed information by means of its monitoring and events recording capabilities, supporting both single-phase and viper recloser configurations.

Overcurrent, voltage, power, and frequency functions
Arc detection: light or light+overcurrent
IEC 61850 native platform, PRP, HSR and link fall-over redundancy
Cybersecurity features: sFTP, HTTPS, firewall, audit log, password accessing
Stave protocol: IEC 61850, DNP3.0, IEC 870-5-101/103/104, Modbus, PROCOME

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