Items Subject to Procurement

Tohoku Electric Power Network Co., Inc. invites manufacturers of items listed below, who can provide the items at competitive prices. Submissions by all overseas manufactures will also be gladly accepted via Japanese sales agencies.

Items Subject to Procurement

Substation

Product name Overview, main specifications, etc.
Vacuum circuit breaker This uses extinction performance of high vacuum as arc quenching medium.
  • Rated voltage:72 kV
  • Rated current:800 A
  • Rated breaking current:12.5 kA
  • Codes and Standards:JEC-2300-2010, JEC-2390-2013
Vacuum circuit breaker Same as above
  • Rated voltage:7.2 kV
  • Rated current:600 A
  • Rated breaking current:12.5kA
  • Isolated, transmission lines
  • Codes and Standards:JEC-2300-2010, JEC-2390-2013
Capacitor voltage transformer (CVT) This transforms high voltage into low voltage with partial pressure, and is used for measuring circuit and protection circuit.
  • Single phase
  • Rated voltage:Primary 66/√3 kV, Secondary 110/√3 V
  • Rated capacity:50 VA
  • Cords and standards:JEC-1201-2007, JEC-0103-2005, JEC-5914-2006
Cubicle gas-insulated switchgear This contains components, including SF6 gas-insulated circuit breaker, disconnector, grounding switch, and instrument transformer, in one box (cubicle).
  • Rated voltage:72 kV
  • Used for distribution/substation
  • Cords and standards:JEC-2350-2005, JEC-2390-2013
Gas disconnector This contains disconnecting parts in the SF6 gas filled tank.
  • Rated voltage:72 kV
  • Used for distribution/substation
  • Cords and standards:JEC-2350-2005, JEC-2390-2013
Earthed voltage transformer (EVT) This transforms high voltage into low voltage, and used for measuring circuit and protection circuit. The neutral point of the primary-side star connection is earthed.
  • Three phase (Star-Star, Open-Delta), Oil-immersed tank
  • Rated voltage:Rated primary voltage of 66kV, Rated secondary voltage of 110V, Rated tertiary voltage of 110/3V
  • Rated capacity:200 VA
  • Cords and standards:JEC-1201-2007, JEC-0103-2005
Power condenser This increases system voltage with power factor improvement.
  • Rated voltage: 66kV
  • Rated capacity: 10 MVA
  • Cords and standards:JIS C 4902-1-1~3 (2010)
Insulator washing device This device cleans porcelain insulator of transforming facilities with water injection to prevent salt damage.
  • Used for washing insulators used in substations

Transmission

Product name Overview, main specifications, etc.
Twist prevention damper (NBD) This device installs weights on electric/ground wires to enhance torsional rigidity in order to prevent snow accretion caused by twist of electric/ground wires.
  • Various types for ASCR cables
SP insulator This device is a rod-like supporting insulator, which is mainly used to support jumper wires.
  • Various types for 154 kV (JISC 3818)
Long rod supporting insulator Main purpose of this device is to support jumper wires.
  • Various types for 33 kV - 154 kV (standard for electricity A-306, A-3061)
Porcelain interphase spacer This device is installed between electric wires to control galloping motion of electric wires and to prevent contact between electric wires.
  • Various types for 66 kV
Loose spacer This device controls galloping amplitude.
  • Various types for 2-bundle conductors and 4-bundle conductors

Comunication

Product name Overview, main specifications, etc.
Mobile radio equipment
Mobile radio system (analog/digital)		 This radio device composed of one base station or multiple stations and multiple mobile stations covers a broad range.
  • Digital on-vehicle, Digital/analog base stations and controller
Optical media converter This device connects LAN system between several offices or within the same office via optical fiber and convers signals between electrical interface and optica interface.
  • Transmission speed: 100 Mbps
  • Possible transmission distances Middle: 36 km, Long: 46 km, Ultra-long: 66 km

Distribution

Product name Overview, main specifications, etc.
CVCF
CVCF (5 kVA)
CVCF (20 kVA)		 This device provides power in the event of stop of work and forced outage.
  • 5 kVA
  • 20 kVA
Panzer mast
  • 10 m
  • 12 m
Remote power transformer
Round: 5kVA
Reinforced salt-resisting: 5kVA
Reinforced salt-resisting: 8kVA
  • Round: 5kVA
  • Reinforced salt-resisting type: 5kVA
  • Reinforced salt-resisting type: 8kVA
Tightening connector
  • CU 22
  • CU 38
  • CU 60
  • CU 100
  • CU 125
  • CU 150
Fault section indicator
  • Distribution line carrier
  • Distribution line carrier: Reverse power flow
  • Communication line carrier: Reverse power flow
  • No communication function: Reverse power flow
Power communication box
  • 3 protectors
Cable spacer
  • 6
  • 60
  • 150
Integrated band  
Integrated rack
  • For single wire
  • For three wires
  • For four wires
Improved hanger band
  • Used for one transformer
  • Expansion kit
Improved copper solid clamp cover
  • Incombustible
Copper anchor clamp
  • 60
Cross arm
  • 1800
Guy anchor
  • 3t
  • 6t
Guy band
  • Concrete pole: 6t
Foot pegs
  • Panzer
  • Concrete pole
Low pressure grip
  • 5.0
  • 60
Electric pole sign
  • White and large
  • White and small
  • Yellow