Typical Specifications
VIPER-S® Solid Dielectric, Three Phase Reclosers

A. GENERAL
This specification covers the requirements for an electronically controlled, automatic three phase, solid dielectric vacuum recloser for distribution systems through 38kV. The recloser shall be manufactured by G&W Electric designated as Viper-S® Solid Dielectric Recloser. Recloser configuration shall be (check one): 

____  Pole mount design

____  Substation mount design

____  Padmount, dead-front design

The recloser manufacturer shall be ISO 9001:2000 and ISO 14001:2004 certified. 

B. DESIGN RATINGS AND STANDARDS
Reclosers shall be designed, tested and built per latest version of ANSI C37.60 standards. Certified test reports shall be provided. The recloser shall be rated: (select column)

C. RECLOSER CONSTRUCTION
C1. Mechanism Enclosure
The magnetic actuator and corresponding linkage assembly shall be housed within an integral, air insulated, stainless steel enclosure. A bolted panel at the bottom of the mechanism enclosure shall permit easy access if maintenance is required. All hardware shall be made of stainless steel or brass for maximum corrosion-resistance. An air vent shall be provided. The mechanism enclosure shall be painted light gray using a corrosion-resistant epoxy paint. Ground bosses shall be provided for system ground.

C2. Operating Mechanism
The operating mechanism shall utilize a magnetic actuator for opening and closing of the vacuum interrupters. The actuator shall be powered by capacitors located in the mechanism enclosure. The manual trip and lockout handle shall be made of stainless steel for maximum corrosion resistance. The operating temperature range shall be -40C to +65C. Vacuum interrupter contact position indication shall be accomplished using green (open) and red (closed) indicators located at the bottom of the mechanism enclosure.

C3. Vacuum Interrupters
Interruption of the fault or load current shall be accomplished through vacuum interrupters located inside the solid dielectric modules.

C4. Solid Dielectric Modiles

The solid dielectric  modules shall utilize a time proven EPOX solid dieledtric epoxy insulation to fully encapsulate each of the three vacuum interrupters.  The solid dielectric modules shall be fully shielded and incorporate a high impact poly-car-bonate, track resistant, UV stable covering.  A dual ratio, 500:1 and 1000:1, current transformer and voltage sensor shall be integrally molded into each module. Modules shall be molded with one (1) source side and one (1) load side, ANSI apparatus brushing interface.

C5. Bushings
Cable bushings shall be one of the following (check one):

____ Air insulated, removable silicone insulators over ANSI apparatus brushing interface.

For Padmount designs:

____ 600A apparatus bushing.

____ 200A deepwell bushings.

D. OPERATION
Monitoring of the circuit shall be accomplished using internal, multi-ratio current transformers. The unit shall be powered by a customer supplied external 120 VAC source.

Recloser sequencing, tripping and overcurrent sensing shall be an automatic function of the electronic control. If a fault current is sensed on any phase, the recloser will trip all three phases. Manual trip and lockout shall be provided by an external, hookstick operable handle. Operation of the manual trip handle shall disable any local or remote closing operation until the handle is reset. An operations counter viewable through an window at the bottom of the mechanism enclosure shall be provided.

E. MOUNTING
Lifting eyes shall be provided. Mounting provisions shall be supplied as follows:

—— Galvanized polemount center bracket with arrester provisions on the load and line side

insulators. Stainless steel optional.

—— Galvanized polemount horizontal side bracket with arrester provisions on the load and

line side insulators. Stainless steel optional.

—— Galvanized polemount vertical side bracket for phase-over-phase mounting. Stainless

steel.

—— Galvanized adjustable substation frame.  Stainless steel optional.

——— Galvanized adjustable susubstation frame for 45° recloser mounting.  Stainless steel

optional.

——— Dead-front front access padmount design with galvanized steel enclosure.  Stainless

steel enclosure optional.

——— Dead-front front/back access padmount design with galvanized steel enclosure. 

Stainless steel enclosure optional.

F. PADMOUNT ENCLOSURE (if applicable)
Enclosures shall be made of 12 gauge galvanized or stainless steel and manufactured to ANSI C37.72 and C57.12.28 standards. The enclosure shall be mounted independently to facilitate cable installation. Enclosures shall be tamper-resistant incorporating hinged access door(s) with pentahead locking bolt(s) and provisions for padlocking. The enclosure shall be provided with lifting provisions and painted with a Munsell 7.0GY3.29/1.5 green finish.

G. ELECTRONIC CONTROLS
The recloser shall be controlled using the following control:

___ SEL-351 R

___ SEL-651 R

___ SEL-351 S package including painted steel enclosure, relay, connectorized control cable

and 24V control power supply.

___ GE URC

___ None (ordered separately)

Control cable and connections shall permit easy field retrofit from other style reclosers to the recloser.  The controls shall be user programmable.

H. FACTORY PRODUCTION TESTS
Each individual recloser shall undergo a series of mechanical operations verifying contact closing/opening velocity, travel profile, timing and phase synchronicity. The recloser shall be AC hi-pot tested one minute phase-to-phase, phase-to-ground and across the open contacts. Circuit resistance shall be checked on all phases. Timing tests shall be conducted to verify TCC performance.

I. STANDARD COMPONENTS
The following shall be included as standard:

1. Stainless steel mechanism enclosure painted light gray using a corrosion-resistant epoxy paint with ultra-violet protection.
2. Stainless steel and brass fasteners.
3. Lifting provisions.
4. Operations counter.
5. Grounding provisions.
6. Corrosion-resistant three line diagram and nameplate(s).
7. Manual open and lockout handle.
8. AC input cable
9. Control cable
10. Provision for lightning arresters (overhead applications only)

J. OPTIONS (check)
The following options shall be supplied:

___ NEMA 2-hole aerial lugs

___ NEMA 4-hole aerial lugs

___ Clamp style aerial lugs (#2 - 500 kcmil)

___ Clamp style aerial lugs (250 - 750 kcmil)

___ 4/0 brass eyebolt style ground lug(s).

___ Dead-line operation permitting using the batteries located in the control for operation of the recloser if AC input power is lost.  A remote status signal reports the operational status of the interrupter power supply permitting remote indication of the control's capability to open or close the recloser.

___ Internal voltage sensing permitting voltage reading for network reconfiguration applications.  Provides a secondary analog 120VAC output accepted by most relays.

___ Stainless steel polemount center bracket

___ Stainless steel polemount horizontal side bracket

___ Stainless steel polemount vertical side bracket

___ Stainless steel adjustable substation frame

___ Stainless steel padmount enclosure

___ 48 VDC power supply

___ 125 VDC power supply

___ Cold temperature operation to -60°C.

___ External CTs for current monitoring supplied individually

___ External CTs mounted on a single fixture with flexible conduit

___ High impact, UV stable wildfire protectors for source and load insulators