DA Form 7470-R Back-Up Power System Inspection Checklist

DA Form 7470-R or the "Back-up Power System Inspection Checklist" is a Department of the Army-issued form used by and within the United States Military.

The form - often incorrectly referred to as the DD form 7470-R - was last revised on August 1, 2002. Download an up-to-date fillable DA Form 7470-R down below in PDF-format or look it up on the Army Publishing Directorate website.

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BACK-UP POWER SYSTEM INSPECTION CHECKLIST
For use of this form see TM 5-694; the proponent agency is COE.
SECTION A - CUSTOMER DATA
1. PLANT/BUILDING
2. LOCATION
3. JOB NUMBER
4. EQUIPMENT
5. CIRCUIT DESIGNATION
6. DATE (YYYYMMDD)
7. TEST EQUIPMENT AND CALIBRATION DATE
8. TESTED BY
SECTION B - EQUIPMENT DATA
9. MANUFACTURER
10. STYLES/S.O.
11. VOLTAGE RATING
12. CURRENT RATING
13. EQUIPMENT CLASSIFICATION
14. FREQUENCY
15. WET BULB TEMPERATURE
16. DRY BULB TEMPERATURE
SECTION C - VISUAL AND ELECTRICAL/MECHANICAL INSPECTION
17.
CHECK POINT
COND*
NOTES
CHECK POINT
COND*
NOTES
COMPONENT INSPECTION/TESTING
WIRING VISUAL VERIFICATION
UTILITY TRIP/GENERATOR BUILDING LOAD
ENERGIZE AND TEST SYSTEM
TEST
INSTALLATION INSPECTION/TESTING
TIGHTNESS OF BOLTED CONNECTIONS
GENERATOR CONTROLS AND FUNCTIONS
CHECK FOR PROPER SIZE BREAKER
WIRING CONTINUITY TESTING
REFERENCE DRAWINGS
PROPER PHASING CONNECTIONS AND
WORKING CLEARANCE
COLOR CODE
SWITCHGEAR CONTROL FUNCTIONS
PERFORM AUTOMATIC TRANSFER
A. OPERATE NORMAL POWER
SYSTEM (ATS) FUNCTIONS UNDER THE
ADJACENT CONDITIONS.
B. ALL GENERATORS OPERATE
C. GENERATORS 1 AND 2 OPERATE
D. GENERATORS 2 AND 3 OPERATE
E. GENERATORS 1 AND 3 OPERATE
F. RETURN TO NORMAL POWER AFTER EACH OF THE ABOVE TESTS
G. PARALLEL WITH UTILITY UPON RETURN TO NORMAL POWER
(ITEMS B THROUGH E)
SECTION D - ELECTRICAL TESTS
18.
VOLTAGE AND CURRENT MEASUREMENTS
MEASUREMENT DESCRIPTION
VOLTAGE**
CURRENT**
A-N
B-N
C-N
A-B
B-C
C-A
A
B
C
N
G
A-N
B-N
C-N
A-B
B-C
C-A
A
B
C
N
G
19. NOTES
1. CHECK FOR PROPER GROUNDING CONNECTIONS PRIOR TO ENERGIZING.
*CONDITION: A=ACCEPTABLE; R=NEEDS REPAIR, REPLACEMENT OR ADJUSTMENT; C=CORRECTED; NA=NOT APPLICABLE
**NOTE VALUE AND PHASING
DA FORM 7470-R, AUG 2002
APD LC v1.00
BACK-UP POWER SYSTEM INSPECTION CHECKLIST
For use of this form see TM 5-694; the proponent agency is COE.
SECTION A - CUSTOMER DATA
1. PLANT/BUILDING
2. LOCATION
3. JOB NUMBER
4. EQUIPMENT
5. CIRCUIT DESIGNATION
6. DATE (YYYYMMDD)
7. TEST EQUIPMENT AND CALIBRATION DATE
8. TESTED BY
SECTION B - EQUIPMENT DATA
9. MANUFACTURER
10. STYLES/S.O.
11. VOLTAGE RATING
12. CURRENT RATING
13. EQUIPMENT CLASSIFICATION
14. FREQUENCY
15. WET BULB TEMPERATURE
16. DRY BULB TEMPERATURE
SECTION C - VISUAL AND ELECTRICAL/MECHANICAL INSPECTION
17.
CHECK POINT
COND*
NOTES
CHECK POINT
COND*
NOTES
COMPONENT INSPECTION/TESTING
WIRING VISUAL VERIFICATION
UTILITY TRIP/GENERATOR BUILDING LOAD
ENERGIZE AND TEST SYSTEM
TEST
INSTALLATION INSPECTION/TESTING
TIGHTNESS OF BOLTED CONNECTIONS
GENERATOR CONTROLS AND FUNCTIONS
CHECK FOR PROPER SIZE BREAKER
WIRING CONTINUITY TESTING
REFERENCE DRAWINGS
PROPER PHASING CONNECTIONS AND
WORKING CLEARANCE
COLOR CODE
SWITCHGEAR CONTROL FUNCTIONS
PERFORM AUTOMATIC TRANSFER
A. OPERATE NORMAL POWER
SYSTEM (ATS) FUNCTIONS UNDER THE
ADJACENT CONDITIONS.
B. ALL GENERATORS OPERATE
C. GENERATORS 1 AND 2 OPERATE
D. GENERATORS 2 AND 3 OPERATE
E. GENERATORS 1 AND 3 OPERATE
F. RETURN TO NORMAL POWER AFTER EACH OF THE ABOVE TESTS
G. PARALLEL WITH UTILITY UPON RETURN TO NORMAL POWER
(ITEMS B THROUGH E)
SECTION D - ELECTRICAL TESTS
18.
VOLTAGE AND CURRENT MEASUREMENTS
MEASUREMENT DESCRIPTION
VOLTAGE**
CURRENT**
A-N
B-N
C-N
A-B
B-C
C-A
A
B
C
N
G
A-N
B-N
C-N
A-B
B-C
C-A
A
B
C
N
G
19. NOTES
1. CHECK FOR PROPER GROUNDING CONNECTIONS PRIOR TO ENERGIZING.
*CONDITION: A=ACCEPTABLE; R=NEEDS REPAIR, REPLACEMENT OR ADJUSTMENT; C=CORRECTED; NA=NOT APPLICABLE
**NOTE VALUE AND PHASING
DA FORM 7470-R, AUG 2002
APD LC v1.00

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