Baker D30R, User'S Manual & Operating Instructions

Page: 6 / 142

D30R Users Manual
6
Do Not Touch Test Leads while test is in Progress!
71-023 Rev C 5/8/2007
Auto Ranging Resistance Measurement Algorithm .................................... 37
Saving & Recalling Measurements ............................................................ 37
Indications of problems in a motor ............................................................ 38
CHAPTER 4: PRINCIPLES & THEORY OF DC TESTING .................... 39
P
RINCIPLES OF
DC T
ESTING
........................................................................... 41
CHAPTER 5: PERFORMING HIGH VOLTAGE DC TESTS ................. 45
T
HE
T
EST
D
ISPLAY
......................................................................................... 47
G
ENERAL
U
SER
C
AUTIONS AND
N
OTES
.......................................................... 47
T
EST
P
RECAUTIONS
........................................................................................ 48
H
IGH
V
OLTAGE
DC T
EST
C
HECKLIST
............................................................. 49
DC Testing ................................................................................................. 49
Full DC Testing of a Motor........................................................................ 49
Performing
Only
a Megohm Test........................................................... 53
Performing Only DC Over Voltage Test (DC HiPot Test)......................... 54
Sample Data showing Good & Poor Insulation......................................... 55
Storing the Test Results in Memory............................................................ 56
U
SING THE
F
OOT
S
WITCH
............................................................................... 57
T
HE
H
I
P
OT
O
VER
C
URRENT
T
RIP
I
NDICATOR
................................................. 58
E
FFECTS OF
T
EMPERATURE
............................................................................ 58
Step Voltage Test........................................................................................ 59
Step Voltage Test Procedure ...................................................................... 59
CHAPTER 6: PRINCIPLES AND THEORY OF SURGE TESTING ...... 61
P
RINCIPLES OF
S
URGE
T
ESTING
...................................................................... 63
Surge Testing Theory ................................................................................. 63
Determination of a Fault............................................................................ 65
Motivation for Surge Testing ..................................................................... 65
Contact Bounce .......................................................................................... 66
Lightening Strikes ...................................................................................... 66
Inverter Transients ..................................................................................... 66
Line Surges................................................................................................. 66
IGBT S
WITCHING
T
ECHNOLOGY
.................................................................... 67
CHAPTER 7: PERFORMING SURGE TESTS ........................................... 69
G
ENERAL
U
SER
C
AUTIONS AND
N
OTES
.......................................................... 71
Surge Test Setup......................................................................................... 72
480V T
HREE
P
HASE
M
OTOR
C
HECK
L
IST
....................................................... 74
S
INGLE
C
OIL
S
URGE
T
EST AND
S
ET
-U
P
.......................................................... 76
Example: Comparison to a Master Coil ................................................ 78
CHAPTER 8: SURGE TEST APPLICATIONS .......................................... 81