BR series low-ohms resistor units. RF series resistors.

 

BR series resistor units are intended for exploitation in DC electrical circuits voltage to 440V, and in AC circuits frequency 50 (60) Hz, voltage to 660V. Are used as additional, load, start, discharge, braking resistors and etc.

 

 

BR series resistor unit conditional shorthand structure:

 

BR-X1X2X3

BR – series;

X1 – rated unit resistance value fulfillment:

1 – value of resistance 0,5 Ohm

2 – value of resistance 0,75 Ohm

3 – value of resistance 1,17 Ohm

4 – value of resistance 2,06 Ohm

X2 – type of climate fulfillment Y or T due to the GOST 15150;

X3 – placing category 3 due to the GOST 15150.

 

BR series resistor units differ by general resistance value, separate steps resistance, rated load current.

 

 

 

Protection level – IP00 due to the GOST 14255.

 

BR series units dimensions: Length 645 mm, Depth 77 mm, High 240 mm.

 

RF series resistors are designed for BR units acquisition and can be supplied separately also. They are used as additional, load, start, discharge, braking resistors and etc. Series RF resistors consist of steel clamp with insulators mounted on it, in trenches of which fechral ribbon of high resistant is placed, taps are soldered to resistive component.

RF series resistor conditional shorthand structure:

 

 

 

 

RF X1X2X3

 

RF – series;

X1 - type of climate fulfillment Y or T due to the GOST 15150;

X2 - placing category 3 due to the GOST 15150

X3 – resistance value: 0,1 Ohm, 0,15 Ohm, 0,234 Ohm, 0,32 Ohm, 0,412 Ohm, 0,42 Ohm 0,84 Ohm.

* RF series resistors can be used on electrical railway transport rolling stock and in trolleys.

 

 

 

BR series resistor units technical features are given in Table.

 

Unit standard performance

Unit rated resistance, Ohm

Rated current (continuous), A

Steps rated resistance, Ohm

Resistors quantity, item

Outputs quantity, item

Weight, kg, max

 

Resistors connection scheme in BR series resistor units is given in Table 2. Table 2.

 

 

Unit standard performance

Unit rated resistance, Ohm

Resistors connection scheme

 

RF series resistors that are used on electrical railway transport rolling stock and in trolleys technical dates are given in Table

 

 

Resistance, Ohm

Dissipated power at 350°C, W

Dimensions, mm

Weight, kg

length diameter 

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