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Home › Products › Cable Accessories › 200A Loadbreak › 35kV › Description

Description

RATINGS
Max. continuous voltage: 21.1 kV phase-to-ground
36.6 kV phase-to-phase
Continuous current: 200 ampere rms
SHORT-TIME CURRENT RATINGS
0.17-second duration 10,000 amp rms symmetrical
3.00 second duration 3500 amps rms symmetrical
INSULATION WITHSTAND VOLTAGES
Basic Impulse Level
(1.2 x 50 microsec. wave)		 150 kV crest
60 Hertz (one minute) 50 kV rms
Dc (15 minutes) 103 kV
Corona extinction voltage
(3 picocoulombs)		 26 kV
SWITCHING
1-phase and 3-phase circuits 21.1 kV phase-to-ground, 36.6 kV maximum across the open contacts. 10 loadmake/loadbreak operations at 200 amps with 90% parallel and 10% series resistance – reactance load at 0.8 power factor.
FAULT CLOSURE
One fault-close operation at 21.1 kV phase-to-ground, or 36.6 kVphase-to-phase; 10,000 amps rms symmetrical, 10 cycles,(0.17 seconds).
PRODUCTION TESTS
100% factory test for partial discharge and either AC Hi-Pot (50kV for 60 seconds).

GENERAL INFORMATION

Hubbell 21.1/36.6 kV underground elbow connectors provide utilities with products having high reliability and low maintenance expense.

These connectors provide:

  • 10,000 ampere fault-closing capability
  • Standard elbow and bushing loadbreak principle
  • Molded shields
  • Peroxide-cured EPDM compounds
  • Full compliance with IEEE Standard 386
    - 35kV Large Interface - Figure 8
  • Purple cuffs for quick 35kV identification

The Hubbell separable elbow connector is designed for use with single-conductor, concentric neutral power cable having extruded insulation shielding. With shield adapter products, the Hubbell elbow can be used with cables having a metallic tape shield, wire shield, or lead sheath with tape or extruded insulation shielding.

All insulating and conducting rubber components are made of a special formulation of an EPDM elastomer using a peroxide curing process. The material and curing process provide’s superior elastomer stress relaxation characteristics under high ambient temperatures and contributes to reliable, long-time operation in either above-ground or subsurface installations.

Elbow connector/integral bushing combinations are suitable for energized loadmake/loadbreak operations by a qualified lineman using an 8’ shotgun-type hot stick.

All elbow/integral bushing combinations are designed for use with subsurface (submersible to 10 feet of water) or padmounted installations.

Where To Use

Hubbell 35 kV loadbreak elbows are designed for operation on and connection to 35 kV class, 150 kV BIL systems where the voltage ratings listed on this page are not exceeded.

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