Measurement and Test Methods 〔lnsulation Resistance〕 Measured with a megger by applying specified voltage to the specified locations. The locations below shall be tested unless otherwise specified. However, if the section concerned is so constructed as to conduct, that particular part shall not be tested. 〔Measuring Locations for Withstand Voltage and Insulation Resistance〕 ● Between terminal and shaft (lever) ● Between terminal and metal cover (frame) ● Between terminal connected to separate resistor element and terminal connected to another resistor element (of multi-ganged-unit) ● Between switch terminal and shaft ● Between switch terminal and resistance terminal ● Between switch terminal and metal cover 〔Gang Error〕 With the shaft (lever) placed in the specified position, gang error shall be determined by applying test voltage of 2 to15V (sine-wave RMS value) between the terminals 1 and 3 at 1,000 ± 200Hz and measuring the voltage between the resistor terminal 2 and the specified terminal (terminal 1 or 3) and then by using the following equation. If there are no questions on determination, DC voltage may be applied for this test. Gang error=20log V2 V1 Where, V1: Voltage between the reference resistor terminals 1 and 2 (voltage between the terminals 2 and 3 if the resistance tapers are C, E and reverse D) V2: Voltage between the non-reference resistor terminals 1 and 2 (voltage between the terminals 2 and 3 if the resistance tapers are C, E and reverse D) If there is a tap terminal, measurement shall be made by connecting a fixed resistor whose resistance is equivalent to 1/10 of the nominal total resistance between the tap terminal and the terminal 1 (if the resistance taper is C, make connection between the tap terminal and the terminal 3). Reference resistor for step 4 Reference resistor for step 2 Reference resistor 4 3 2 Reference resistor 1 Terminal 1 Terminal 3 〔Contact Resistance of Switch〕 Unless otherwise specified, contact resistance of switch shall be determined by measuring drop voltage when 5V DC, 1A is applied between contacts and the contacts are closed. Mechanical Performance 〔Total Rotational Angle（Travel） 〕 Determined by measuring the rotational angle (travel) when the shaft (lever) is turned (moved) from the termination position of terminal 1 to the termination position of terminal 3. 〔Rotational Torque（Operating Force） 〕 Determined by measuring the torque (operating force) necessary to turn (move) the shaft (lever). Unless otherwise specified, measurement shall be made at an ambient temperature of 5 to 35℃ , and the shaft rotational speed shall be 60°per second and the lever moving speed 20mm per second. 430 Measurement and Test Methods 〔Starting Torque（Starting Force） 〕 Determined by measuring a torque (operating force) necessary to turn (move) the shaft (lever) for the first time after allowing the test piece to stand for a long period of time. Unless otherwise specified, measurement shall be made at an ambient temperature of 5 to 35℃ , and the shaft rotational speed shall be 60°per second and the lever moving speed 20mm per second. Remarks:To be specified only when required in particular 〔Shaft Wobble〕 Determined by measuring the amount of deflection at a position of 30mm from the reference surface with a bending moment of 0.1N·m（50mN·m for insulated shaft）applied perpendicularly to the shaft from 180° different directions at a point within 3mm from the place where a smooth cylindrical surface of the shaft ceases to exist. However, if the length of the shaft is less than 30mm, proportional calculation shall be used. 〔Allowable Operating Torque for Shaft（Lever）〕 With the shaft (lever) placed at the termination of terminal 1, a specified torsional moment (force) shall be applied in that direction for 10 seconds. Next, the shaft (lever) shall be placed at the termination of terminal 3 and a specified torsional moment (force) shall be applied similarly, to check the control part and other related sections for any deformation or breakage. 〔Push-pull Strength（Lever Push-pull Strength） 〕 A specified force shall be applied in the axial direction of the shaft (lever) for 10 seconds to check the control part and other sections for any deformation or breakage and for operating condition. Resistance Taper 〔Resistance Taper〕 J G 70 J 80 G 90 G Tapers B, B(vol.control), W and special W J 100 60 50 40 ) ) 80 90 100 J Term."3" J J 70 Input volt. across term. 1-3 Output volt.across term.1-2 60 50 40 30 20 10 10 Term."1" 20 30 40 50 60 70 Rotation travel (%) 100 G 100 (%) ntr ol) 80 0 J Tapers B and VB(vol.control), with 50% tap 90 (vo l.co G Output volt.across term.1-2 100 (%) Input volt. across term. 1-3 G 100 VB J ) Rotation travel (%) J Term."1" lW ecia Sp 20 30 40 50 60 70 1B M 10 B( 0 J 10 (5B (v ol. co W nt ro 20 (4B B( 1 l)( B) 3B ) 30 B Output volt.across term.1-2 100 (%) Input volt. across term. 1-3 G J With the shaft (lever) placed in the specified position, resistance taper shall be determined by measuring the voltage between the specified terminals (between terminals 1 and 2 or between terminals 2 and 3)and calculating the percentage in reference to the voltage between terminals 1 and 3. Reference: Standard resistance tapers in reference to rotational angles (travels) are as shown below. 80 90 100 J Term."3" RK09Y11L Series 90 80 70 60 50 40 30 20 10 0 30 Term."1" 60 90 120 150 180 210 240 270 300° Rotation angle J Term."3" 431