Megger MIT510 - Page 49

AF008-02-1201
49
Number
Issue
Date
CN Number
6
1
7
2-
999
2
17-01-07
22933
Compiled
By:
S.Mynott
Date
Compiled:
08/08/06
MIT5XX/10XX
1
st
Used On:
SERVICE MANUAL
TP56
+
7
-
6
Y
1
IC2-2
LM339
R66
22K
R268
10K
C47
100nF
NOT FITTED & VARIANT LIST
R266
10K
TP57
+
C49
10uF
16
TP55
R61
10K
R53
2.2K
R68
1K
HVin
BreakdownDetect
|AvgVolts|
Polarity
+5V(A)
0V(A)
+5V(A)
0V(A)
-8V
If regularly toggleing
then assume a.c.
If a.c. then firmware to multiply by
form factor of 1.111 for rms value.
0V(A)
0V(A)
0V(A)
50mV
+5V(A)
C15
100nF
R37
100K
TP1 9
R36
1K
R35
10M
7
3
2
4
6
1 5
8
+
-
IC4
MCP601
R33
1M
C14
100nF
TP20
R32
100K
+5V(A)
GuardFuseOK
GuardFuseVolts
0V(A)
TP6 4
Guard Fuse Monitor
-8V
0V(A)
+5V(A)
C118
100nF
-8V
0V(A)
0V(A)
0V(A)
0V(A)
Title
Size
Document Number
Date:
Sheet
of
ME G GE R L I MI TE D
Archcliffe Road, Dover,
Kent, CT17 9EN, England
Issue Date CN No.Instrument:
Drawn By:
© MEGGER LIMITED
6270-298
Measurement Board - Voltage Meas. & Guard Fuse Monitor
A3 6 7
Wednesday , August 14, 2002
MIT5XX & 10XX
C.Wedge 11 22-02-2006 22621
12 06-03-2006 22636
<Variant Name>
+5V(A)
Not fitted
0V(A)
CW
ZERO ADJ
AC Rectif ier
4mA=33nF
0V(A)
TP199
0V(A)
0V(A)
C133
100nF
C131
100nF
TP178
0V(D)
0V(D)
R269
33K
C132
100nF
R270
33K
C130
100nF
TP205
TP206
TP204
C134
10nF
7
3
2
4
6
1 5
8
+
-
IC11
ADOP07DN
RV1
10K
7
3
2
4
6
1 5
8
+
-
IC25
ADOP07DN
R311
1K
7
3
2
4
6
1 5
8
+
-
IC26
ADOP07DN
R312
2.2K
R310
100K
R309
100R
D30
BZX84C3V0
D31
BZX84C3V0
+5V(A)
-8V
0V(A)
0V(A)
R271
33K
R272
33K
+5V(A)
+5V(A)
-8V
TP5 2
C50
100n
-8V
+5V(A)
R52
10K
R57
10K
R73
10K
TP6 1
TP62
R54
2.2K
R60
100K
C51
3.3nF
D9
LL4148
+
5
-
4
Y
2
IC2-1
LM339
TP4 6
C45
100nF
R58
10K
R62
1M
R55
10K
R63
100K
TP4 7
D10
LL4148
C44
100nF
R69
10K
+
C48
10uF
16
TP5 8
3
12
V+
V-
IC2-5
LM339
TP49
R59
10K
R267
10M
Detects "pops" during breakdown.
Output current is limited to 2mA
or 5mA elsewhere.