(7) Insulation Resistance Value Measurement (1.8.23).xlsx

	B	C	E	F	H	J	K	L	M	S	T	U	V	W
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2		Minimum Insulation Resistance Value				Jignesh.Parmar,jiguparmar@yahoo.com, www.electricalnotes.wordpress.com
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4	Minimum IR Value for Rotating Machine				Minimum IR Value for Cable
5					Type of Cable		Multicore
6		Machine Terminal to Terminal Voltage	0.44	KV	Type of Insulation Material		Varnished
7							25	mm
8		IR (Min) for Machine	1.44	MΩ	Diameter of Conductor		20	mm
9					Thickness of Jacket Insulation		10	mm	64
10					Thickness of Conductor Insulation		12	mm
11					IR Value (Min) for Cable		1242.7	MΩ
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13	Minimum IR Value for Transformer				Minimum IR Value for Domestic Wiring
14											50 Hz	25 Hz	2
15		Frequency	50	Hz	(1) No of Outlet (All Point,Plugs with Fitting(Lamp etc))		40			1	1.5	1
16		Voltage Rating of winding under Test	440	Volt	IR(min) value	Excellent	1.25	MΩ		2	30	20
17		Rated Capacity of Winding under Test	1.6	KVA	(2) No of Outlet (All Point,Plugs without Fitting(Lamp etc))		25			3	30	20
18		Select Type of Transformer			IR(min) value	Excellent	2.00	MΩ
19		Tank Oil Filled T.C	1								1.5
20		Without Tank Oil filled T.C
21		Dry or Compound Fill T.C
22		IR (Min) for Transformer	521.8	MΩ
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28											1	Paper	2640	1 Core
29											2	Varnished	2460	Multicore
30											3	ThermoPlastic-Polyethylene	50000
31											4	Composite-Polyethylene	30000
32											5	Polyvinyle Chloride (60°C)	500
33											6	Polyvinyle Chloride (75°C)	2000
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35												2460	64
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