DSH 263 Earthing connection through moving part of class I motor

小米

广东安规检测
有限公司提供：

小型摆管淋雨试验机

IPX5X6X7喷水试验机

1000L恒温恒湿箱

各种试验指现货

可程式恒温恒湿试验箱

水平垂直燃烧机

自动卷线器试验机

耐划痕试验机

各种灯头量规现货

灼热丝试验机现货

GB1002插头量规

IPX1-X7淋雨现货

IEC61347/UL935镇流器热试验箱

灯具防风罩

IK冲击试验机

UL498插头插座量规

VDE0620插头插座量规

稳定性试验台

家电温升测试角

针焰试验机现货

热电偶焊机现货

家电125mm试验指

E12灯头量规

无绳壶无绳电熨斗插拔寿命试验机

IEC60335试验指甲

DSH 263 , M1 K7 w3 a8 v1 N2 W 6 _. H+ g. q  m" J3 P

Earthing connection through moving part of class I motor , M9 B' i) P" B, W4 T

19.11.2, 25.1 and 25.6

60745-1(ed.2) & 61029-1(ed.1)

5 W0 P) X( e% |7 K5 U2 FStandard: IEC 61029-1, Ed. 1 / IEC
& K4 W) z) M9 o2 g) Q& G60745-1, Ed. 2
Subclauses: 19.11.2,
, i. y1 E. E$ [3 s* Q/ [1 M# l25.1 and 25.6
5 h3 a4 X/ H. {; bSheet n 263
7 F, u( r  D$ u! |4 XPage 1(1)
' q2 Y8 O: f6 F6 S$ `8 _" mSubject: earthing connection
) D% u, X) D  H: Y7 ~/ G8 Mthrough moving part of class I
) s7 d2 ^5 x( Q* f. i8 pmotor
# t" M) O7 V2 G) s$ cKey words:
- earth connection,
9 R; z) ~2 z2 P" H" a- moving part
- D" H7 l3 g4 c+ JDecision n.19 taken
) n7 z0 W! b7 g/ Gat 35th meeting/1998
Question:
We consider a class I tool employing a universal type motor. The motor shaft is
  e9 n1 o7 }3 h) F4 J5 c( t! Iconductively coupled to the earthed enclosure through steel ball bearings.
, g, k3 h0 ?: I5 W, R' s) DIn this case, shall the motor be of class II construction (motor shaft separated from the rotor
windings and commutator by double or reinforced insulation) ?
Decision:
Yes, the accessible motor shaft of a class I tool shall be separated from the rotor windings
/ n; ]. U, b' S' F( `: i  Uand commutator by double or reinforced insulation (class II construction).