TB 9-6625-172-24
a. Performance Check
(1) Connect 1-turn coil to calibrator output terminals.
(2) Set TI function switch to ~mA.
(3) Set calibrator for a 0.3 mA, 60 Hz output and clamp TI around coil.
If TI
indication is not within limits specified in first row of table 4, perform b below.
(4) Repeat technique of (3) above for calibrator outputs listed in table 4.
If TI
indications are not within limits specified in table 4, perform b below.
Calibrator
Test instrument
Output
Indication limits (mA)
(mA)
Min
Max
0.3 @ 60 Hz
0.244
0.356
0.9 @ 60 Hz
0.832
0.968
1.1 @ 60 Hz
1.05
1.15
9.0 @ 60 Hz
8.79
9.21
11.0 @ 60 Hz
10.5
11.5
90 @ 60 Hz
87.9
92.1
110 @ 60 Hz
105
115
900 @ 60 Hz
879
921
(5) Set TI function switch to ~A.
(6) Set calibrator for a 0.3 A, 60 Hz output and clamp TI around coil.
If TI
indication is not within limits specified in first row of table 5, perform b below.
(7) Repeat technique of (6) above for calibrator outputs listed in table 5.
If TI
indications are not within limits specified in table 5, perform b below.
Calibrator
Test instrument
Output
Indication limits (A)
(A)
Min
Max
0.3 @ 60 Hz
0.264
0.336
1.0 @ 60 Hz1
2.910
3.090
1.4 @ 60 Hz
4.09
4.31
10 @ 60 Hz
29.37
30.63
Set calibrator output to minimum and remove 1-turn coil. Connect 3-turn
1
coil to calibrator LO and AUX CURRENT outputs and clamp TI around 3-
turn coil.
(8) Set calibrator output to minimum and disconnect equipment setup.