1、 61620 2013 IEC 61620:1998 Insulating liquids Determination of dielectric dissipation factor by measurement of the conductance and capacitance Test method (IDT) 2014 616202013 II - 27 2002 . 184- , - 1.0 2004 -. 1 - , , ( ) 4 , 2 3 18 2013 . 387- 4 61620:1998 - . - . (IEC 61620:1998 Insulating liqui
2、ds Determination of dielectric dissipation factor by measurement of the conductance and capacitance Test method). - 1.5 2004 ( 3.5). - , - 5 , - . - () . , , 2013 , - 616202013 III . / , 60247, 250 / 1 . tg , ( ) , , . tg = /, , = 2f, f . tg . , tg , , 60247. . . . 616202013 IV 61620 2013 1 Insulati
3、ng liquids. Determination of dielectric dissipation factor by measurement of the conductance and capacitance 20140701 1 G tg , . . 60247, , . 10-6 . , 10-6 1, 200. 2 : 60247:1978 , (tg ) (I 60247:1978, Measurement of relative permittivity, dielectric dissipation factor and d. c. resistivity of insul
4、ating liquids)*1 60475:1974 (IEC 60475:1974, Method of sampling liquid dielectrics)* 5725-1:1994 ( ) . 1. (ISO 5725-1:1994, Accuracy (trueness and precision) of meas-urement methods and results Part 1: General principles and definitions) 5725-2:1994 ( ) . 2. (ISO 5725-2:1994, Accuracy (trueness and
5、precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method) 5725-3:1994 ( ) . 3. (ISO 5725-3:1994, Accuracy (trueness and precision) of measurement methods and results Part 3: Intermediate measures of
6、 the precision of a standard measurement method) 5725-4:1994 ( ) . 4. (ISO 5725-4:1994, Accuracy (trueness and precision) of measurement methods and results Part 4: Basic methods for the determination of the trueness of a standard measurement method). - -1* I 60247:2004, Insulating liquids Measureme
7、nt of relative permittivity, dielectric dissipation factor (tan ) and d. c. resistivity. * IEC 60475:2011, Method of sampling insulating liquids. 616202013 2 - , 1 , . - , , . , , (). , - , , , , . -, , , , . , , - (). - , , , - , , -. , , , - , . 3 : 3.1 conductivity (): , j .Ej (1) 3.2 resistivity
8、 (): , , .1 (2) 3.3 R resistance (R): , , V, , IR .RIVR (3) L .ALR (4) 3.4 G conductance (G): , , .1RG (5) 3.5 capacitance (): , Q V, . LAC , (6) . 3.6 tg dielectric dissipation factor (dielectric loss tangent tg ): , . , R, CGtg , (7) , = 2f, f . , , . 616202013 3 4 . , , . , , ( 1 6 12). V(t) V dV
9、/dt. 1 I ( ) , . . .RVdtdVCI (8) IC V(t). IR V(t), V/R 5 / ( 50 % = 10 /, r= 2,2). , , : , , , , ; , , ( ). , , . 1 /. , , (EHD) , , , , . EHD . .6 ( , ) ( ). . , - . 616202013 14 () .1 - 60247:2004 IDT 60247 2013 . - , - (tg ) - 60475:2011 IDT 60475 2013 - . 5725-1:1994 IDT 5725-1 2002 ( -) . 1. - 5725-2:1994 IDT 5725-2 2002 ( -) . 2. -
