OM7520-B-00
27 September, 2019
ii
3.9.
1000:1 RATIO DIVIDER ................................................................................................................... 3-19
3.10.
CONNECTION AND VOLTAGE COMPARISON INSTRUCTIONS ......................................... 3-20
3.11.
0.01 VOLT, 1:1000 RATIO COMPARISON .................................................................................... 3-21
3.12.
0.1 VOLT, 1:100 RATIO COMPARISON ........................................................................................ 3-21
3.13.
1 VOLT, 1:10 RATIO COMPARISON ............................................................................................. 3-21
3.14.
10 VOLT, 1:1 RATIO COMPARISON ............................................................................................. 3-22
3.15.
100 VOLT, 10:1 RATIO COMPARISON ......................................................................................... 3-22
3.16.
1000 VOLT, 100:1 RATIO COMPARISON ..................................................................................... 3-22
4.
THEORY OF OPERATION................................................................................... 4-1
4.1.
INTRODUCTION ................................................................................................................................. 4-1
4.2.
LOW THERMAL DESIGN ................................................................................................................. 4-1
4.3.
INTERNAL CIRCUITS ....................................................................................................................... 4-2
4.4.
CIRCUIT PROTECTION .................................................................................................................... 4-2
4.5.
COMPARISON MEASUREMENT CONFIGURATIONS ............................................................... 4-3
4.6.
MEASUREMENT CONFIGURATION A: 0.01 VOLT COMPARISON ...................................... 4-4
4.7.
MEASUREMENT CONFIGURATION B: 0.1 VOLT COMPARISON ......................................... 4-4
4.8.
MEASUREMENT CONFIGURATION C: 1 VOLT COMPARISON ........................................... 4-4
4.9.
MEASUREMENT CONFIGURATION D: 10 VOLT COMPARISON ......................................... 4-4
4.10.
MEASUREMENT CONFIGURATION E: 100 VOLT COMPARISON ........................................ 4-5
4.11.
MEASUREMENT CONFIGURATION F: 1000 VOLT COMPARISON ...................................... 4-5
4.12.
INTERNAL RATIO ALIGNMENT .................................................................................................... 4-5
5.
MAINTENANCE AND TROUBLE SHOOTING .................................................... 5-1
5.1.
PERIODIC MAINTENANCE ............................................................................................................. 5-1
5.2.
UNSTABLE READINGS ..................................................................................................................... 5-1
5.3.
ALIGNMENT ........................................................................................................................................ 5-1
5.4.
SERVICE ............................................................................................................................................... 5-1
