DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

CALIBRATION PROCEDURE FOR

MONITOR, ELECTRICAL POWER

MX-8570/APS-94D

Headquarters, Department of the Army, Washington, D.C.

12 March 1971

Paragraph

Page

GENERAL

Purpose and scope .......................................................................................................... 1

Reporting of technical bulletin improvements .................................................................. 2

Description ....................................................................................................................... 3

General instructions ....................................................................................................... 4

Difference among models ............................................................................................... 5

CALIBRATION'

Equipment required ......................................................................................................... 6

Preliminary procedures .................................................................................................... 7

VOLTAGE AC PHASE A meter ....................................................................................... 8

VOLTAGE AC PHASE B meter ....................................................................................... 9

VOLTAGE AC PHASE C meter ..................................................................................... 10

AMPERE AC PHASE A meter ...................................................................................... 11

AMPERE AC PHASE B meter ...................................................................................... 12

AMPERE AC PHASE C meter ....................................................................................... 13

VOLTAGE DC meter...................................................................................................... 14

AMPERE DC meter........................................................................................................ 15

Final procedure ............................................................................................................. 16

SECTION I

GENERAL

1. Purpose and Scope. a. This bulletin which is used

This bulletin also contains illustrations that show the

by maintenance calibration personnel, provides in

location of all controls and components utilized in this

formation for the periodic calibration of Monitor,

calibration procedure as well as dia grams showing

Electrical Power MX-8570/APS-94D (fig. 1). Since

equipment setups. Equipment ground connections

calibration personnel are trained and qualified in the

are not necessarily shown in the dia grams.

use of calibration test and measuring equipment,

detailed instructions concerning the operation and use

of the standards are not contained in this bul letin.

Reporting of Technical Bulletin Improvements.

The reporting of errors, omissions, and recommen

dations for improving this bulletin by the individual