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SECTION 3
Page 67
Specifications
1. 955/955M Combination Fault Locator
A. Measurements
Function Range
Resolution
Accuracy
AC Voltage:
0 to 75 VAC
0.1V
0.7V
75 to 250 VAC
1.0V
3%
DC Voltage:
0 to 100 VDC
0.1V
0.5V
100 to 350 VDC
1.0V
3%
DC Current:
0 to 100 mA DC
0.1 mA
0.3 mA
(Zin = 430 ohms)
Resistance
1
:
0 to 100 Mohms
100 ohms
1%
@ 50 kohms
@ 50 kohms
Opens
1
:(normal mode)
0 to 9.99 kft
10 ft @ 10 kft
+1%
10 k ft to 100 kft
100 ft
+1/–10%
0 to 30000 m
3 m @ 500 m
1.5 m
±
1%
@ 500 m
Tolerance to Leakage,
Normal Mode: >15 kohm to ground / 190 kohm to battery
Opens
1
:(special mode)
0 to 999 ft
1 ft
+1%
1 kft to 10 kft
100 ft @ 10 kft
+1/–10%
0 to 30000 m
3 m @ 500 m
6m
±
1%
@ 500 m
Tolerance to Leakage,
Special Mode: >1200 ohms to ground / 18 kohms to battery
Note:
1
Perform a self-calibration before taking the readings.
B.
Resistance Fault Locate
Note: Accuracy is dependent on power influence noise; the resistance
fault specifications are for low noise situations.
Function
Range
Resolution Accuracy
1,2
Fault Range:
Up to 30 Mohms
Resistance to Fault:
2
0 to 9 ohms
0.01 Ohm
+0.1% RTS
(@ 70
°
F no noise)
+0.01 Ohm
10 to 99 ohms
0.01 Ohm
+0.1% RTS
+0.01 Ohm
100 to 999 ohms
0.1 Ohm
+0.2% RTS
1k to 7 kohms
1.0 Ohm
+1.0% RTS
Resistance to Distance Conversion
Resolution:
3
1 ft to 1,000 ft
0.1 ft
1k ft to 10k ft
1.0 ft