TECNOMEGA Componentes Electrónicos S.L.
Barrio Florida, 56 ; L-29
20120 HERNANI (SPAIN)
Phone: 34 943 330710 - Fax: 34 943 331106
e-mail: info@tecnomega.es

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Further
Information

 
TVK - Corrugated-Ribbon Wound Vitreous-Enamelled Resistors 
TVKR - Adjustable

Series TVK: corrugated alloy tape wound edgewise and held onto a tubular ceramic core by vitreous enamel fused at 800ºC. Ribbed construction, both sides of the tape on direct contact with cooling air, thus providing a covection area four times greater than that obtained with conventional wirewound resistors.

They are capable to withstand heavy overload surges -up to seven times their rated wattage at 420ºC during twenty seconds- and most suited for controlling motors and equipment requiring high wattage dissipation, low resistance values and high current capacity.

Adjustable type, TVKR, may be fitted with intermediate lugs round the winding space, thus permitting to select whatever ohmic values wanted within the total resistance.
 
Series TVK, TVKR  agree with CCTU 04-02C requirements

TVK

Tab Terminal

TVKR


MAIN FEATURES
  • Entirely Welded Construction
  • Maximum Reliability
  • High Long-Term Stability
  • Great Dielectric Strength
  • Ableness to Withstand Heavy Overload Surges
  • Excellent Insulated Resistance
  • Completely Flameproof
  • Low Temperature Coefficient
  • Standard Tolerances: ± 10%, ± 5%
  		POWER DERATING CURVE AS A FUNCTION OF THE AMBIENT TEMPERATURE



AMBIENT TEMPERATURE ºC


Tab Terminal Types


Bc Terminal: same as Terminal B but 10 mm high instead of 16 mm


General Specifications Table

TYPES
DIMENSIONS
(mm)		 POWER RATE (W) for a Surface  TEMP. OHMIC VALUES
Tamb. 25ºC		 TERMINAL
TYPES 		MOUNTING
SYSTEMS
TVK
D L d H <=350ºC <=420ºC min. max.
TVK 12.75 12 75 4.25 26 45 70 0R06 8R B-Bc-C-Tr V-HS
TVK 20.75 20 75 4.25 32 72 110 0R07 10R B-Bc-C V-HS
TVK 20.100 20 100 4.25 32 90 140 0R10 15R B-Bc-C V-HS
TVK 26.87 26 87 6.25 48 100 158 0R13 18R C-D-Tr V1-HS-HP
TVK 26.165 26 165 6.25 48 190 305 0R30 30R C-D-Tr V1-HS-HP
TVK 30.100 30 100 6.25 50 125 200 0R10 15R C-D-Tr V1-HS-HP
TVK 30.153 30 153 6.25 50 188 300 0R10 29R C-D-Tr V1-HS-HP
TVK 30.203 30 203 6.25 50 250 400 0R15 41R C-D-Tr V1-HS-HP
TVK 30.267 30 267 6.25 50 330 530 0R20 58R C-D-Tr V1-HS-HP
TVK 30.305 30 305 6.25 50 375 600 0R25 68R C-D-Tr V1-HS-HP
TVK 40.300 40 300 6.25 55 490 800 0R30 72R D-E HP-HE
TVK 40.380 40 380 6.25 55 560 920 0R40 92R D-E HP-HE
TVK 50.300 50 300 6.25 60 560 920 0R40 92R E-Tr HP-HE-HPD
TVK 50.340 50 340 6.25 60 610 1000 0R45 100R E-Tr HP-HE-HPD
TVK 50.373 50 373 6.25 60 650 1050 0R55 120R E-Tr HP-HE-HPD
TVK 50.400 50 400 6.25 60 685 1120 0R55 120R E-Tr HP-HE-HPD
TVK 60.300 60 300 6.25 65 630 1030 0R45 100R E HP-HE-HPD
TVK 60.400 60 400 6.25 65 800 1300 0R60 140R E HP-HE-HPD
TVK 60.450 60 450 6.25 65 900 1465 0R60 160R E HP-HE-HPD
TVK 60.550 60 550 6.25 65 1100  1800  0R60 200R  E   HP-HE-HPD
   

Tr: Traction Terminal Type
Dimensions Table

     Mounting
Systems 		   


Nominal Power Overloading Operating at Intermittent Duty

Periodical Cycle
 (on + off connections)		 15 s. 30 s. 60 s. 120 s. K
Overload Cycle
(sec.)		 2 4 7 9 6
2,5 5 9 12 5
3 6 12 15 4
4 8 16 23 3
5 10 20 30 2

P=Pn *K

Legend: Printed according to Norms. It will withstand the action of all commonly used industrial cleansing solvents

Ordering Example:

TVK-30.203 - 10R ± 5%  "HP"
Type Ohm.Value Toler. Mounting
Systems

Mentioning Terminal Type (Tab, Traction)