Tavrida Electric Automatic Circuit Reclosers 15-27 kV

Tavrida Reclosers 15-27 kV Reclosers 38 kV Reclosers Fundamentals

Tavrida Electric Three-Phase Recloser for Medium Voltage ( 15kV and 27kV) Systems

Tavrida Three-Phase 15-27 kV Recloser for Mediun Voltage - Rec25_SSline

Key Features:

  • 15kV and 27kV Medium Voltage (MV) Systems
  • 800A Continuous Rated Current
  • X6 Voltage and X3 Current Sensors Built In - Loop Scheme Ready
  • Magnetically Actuated Vacuum Interrupters
  • Tested to 30,000 CO Operations at Full Load
  • Maintenance free, Reliable and Light Weight
  • 5-year warranty

Available Configurations:

  • Three-Phase Gang Operated
  • Three-Phase Independent Pole Operated

Technical Parameters

Rated Data
Rated voltage (Ur), up to 15.5kV 27kV
Rated continuous current (Ir) 800A
8-hour overload current 960A
Rated power frequency withstand voltage (Ud), 1 min dry 60kV
Rated power frequency withstand voltage (Ud), 10s wet 55kV
Rated lightning impulse withstand voltage closed contacts/open contacts (peak) (Up) 150/125kV
Rated short-circuit breaking current (Isc) 16kA 12.5kA
Rated short-circuit making current, peak 41.6kA 32.5kA
Rated short-time withstand current, 4s (Ik) 16kA 12.5kA
Rated frequency 50/60Hz
Switching Performance
Mechanical life (CO cycles) 30,000
Operating cycles, rated current (CO cycles) 30,000
Electrical endurance, breaking current (O-CO cycles) 100
Closing time1 <40ms
Opening time1 <15ms
Interrupting time, for 50/60 Hz1 <25/23 ms
Rated operating sequence O-0.2s-CO-1.5s-CO-2s-CO-2s-CO2
1 Switching module closing, opening and break times excluding control module recognition time.
2 Fastest operating sequence when used with SEL-651R-2 Recloser Control. Subject to change when used with different controls.

Standards
International Standard IEC 62271-100, IEC 62271-111
American Standard IEEE C37.60
Other Data
Current Sensing 3/6 current transformers1
Voltage Sensing 6 Voltage Sensors
Main contact resistance (not more than) 95µOhm
Degree of protection IP65
Weight of switching module 176 lbs (80 kg)
1 600:1 A ratio is standard. 200:1 is available with gang-operated OSM25_Al_5.


Switching Module

Configurations OSM25_Al_4(ALL) OSM25_Al_5(600.200_150_ALL)
Three-Phase Gang Operated - + +
Three-Phase Independent Pole Operate + - -
Parameters OSM25_Al_4(ALL) OSM25_Al_5(600.200_150_ALL)
CT Ratio 600:1 600:1 200:1
Rated primary current 600 A 600 A 200 A
Rating factor according to C57.13 1),2) 1.75 1.75 5.0
Rated secondary current 1 A 1 A
Rated output, at PF=0.8...1 1.0 VA 1.0 VA
Accuracy class of protection transformers according to IEC 61869 5P30 5P30 5P20
Measuring accuracy class, IEC 61869-2 0.1/0.2s 0.1/0.2s 0.2/0.5s
Accuracy limit factor (ALF), IEC 61869-6 at:
25% of rated burden 40 40 52
50% of rated burden 38 38 40
100% of rated burden 33 33 28
Accuracy class of protection transformers according to IEEE C57.13 C100 C100 C20
Accuracy limit factor (ALF) according to IEEE C57.13 20 20
1) Rating factor curves are calculated from standard curves shown in C57.13
2) Rating factor values are applicable to CTs only, continuous current values should not exceed values of the recloser

Parameters OSM25_Al_4(ALL) OSM25_Al_5(600.200_150_ALL)
Voltage sensor ratio range 0.108 - 0.123 V/kV
Voltage sensors ratio error within rated temperature range 1.0 % for all 6 sensors

Three-Phase Recloser Components

Tavrida three-phase 15-27 kV recloser kit

  • Outdoor Switching Module

The Outdoor Switching Module is designed for use in a variety of different applications: an automatic circuit recloser, a sectionalizer on overhead distribution lines, also as an Outdoor Switching Module in distribution substation applications for voltages up to 27kV.

  • Recloser Control

The Tavrida Electric recloser is compatible with SEL-651R MRI Controller. Tavrida also offers customized control cabinets.


  • Umbilical Cable

A single umbilical cable, which can be provided in various lengths, connects the switching module and the control cabinet.

  • Mounting Kit Option

Tavrida Electric offers an optional Stainless-Steel Pole Mounting Kit with a variety of accessories. All Tavrida Pole Mounted Reclosers are fitted with customer specific options within a single lift package.

Accessories

Tavrida three-phase 15-27 kV recloser accessories
  • NEMA 4-Hole or 2-Hole Pads with Wildlife Protection
  • Surge Arrestors
  • Single-Bushing Control Power Transformers
  • Primary Wiring for Surge Arrestors and Transformers
  • Ground Bus Assembly (single ground point for the utility)
  • Fail-Safe Trip Device
  • Test Switches for SEL-651R

Installation Options

Pole Mounted Tavrida Three-Phase 15-27 kV Recloser

  • Pole-Mounted Recloser

Tavrida offers an optional Stainless Steel or Hot-Dipped Galvanized Mounting Hardware Kit. Both options come equipped with provisions for surge arrestors, control power transformers and protective grounding. Tavrida Mounting Kits are appropriate for all types of structures including wooden, concrete or metal single poles and H-pole.

Pad mounted Tavrida three-phase 15-27 kV recloser

  • Pad-Mounted Recloser

For Tavrida’s Underground Distribution System Protection clients, Tavrida and its OEM Partners offer a Pad-Mounted Recloser. The fully customizable Tavrida enclosure provides exceptional operators safety and protection, and is resistance to harsh weather climates.

Substation Tavrida three-phase 15-27 kV recloser

  • Substation Recloser

Tavrida Electric offers a reliable and adjustable Stainless Steel Substation Mount Frame. Customers seeking out-of-the-box solutions, cost effective manufacturing and on-time project execution, Tavrida’s worldwide expertise supports its customers with a new distribution substation to retrofitting outdated substations.

Outdoor Switching Module Design


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  1. Air insulated OSM incorporates a Tavrida Electric vacuum circuit breaker with a per phase actuator, housed in a corrosion resistant tank. Six main circuit bushings, made from UV-stable polymer, are covered with silicone rubber bushing boots. Each bushing has built-in current and voltage sensors for protection, measurement and indication purposes.

  2. Current and voltage sensing is installed in each of the six high voltage bushings. A variety of current transformers are available and the capacitive sensors allow voltage measurements on both sides of the interrupter.

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  3. Tavrida Electric manufactures small vacuum interrupters with extremely long mechanical and electrical lifespans. A specially designed axial magnetic field distribution provides even current density over the contact surface and significantly improves the vacuum's interrupting performance. Carefully sel ected contact material, expert contact design and optimised switching result in bounce-free closing.

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  4. The OSM is equipped with Tavrida Electric's innovative and much simplified vacuum circuit breaker. It uses three single-coil actuators; one per pole. All switching elements of a pole are assembled along a single axis meaning all mechanical movements are direct and linear. Three actuators are installed in a steel frame and linked by a synchronizing shaft.

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  5. A mechanical trip hook is located at the bottom of the tank. The OSM remains locked and cannot be operated until the trip hook is pushed back into the operating position.


Reclosers Documentation

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