Duo™ Service Manual 0070-10-0604-01 2 - 5
Calibration and Performance Verification Safety Test
2.5 Safety Test
2.5.1 Test Equipment
• Safety Analyzer (Dempsey model 431 or equivalent)
2.5.2 Case Leakage
1. Plug the line cord of the unit into the safety analyzer.
2. Connect the case ground lead of the analyzer to the equipotential lug of the Duo
monitor.
3. Perform the leakage tests under the following conditions:
a. Case grounded:
Normal polarity
Normal polarity with open neutral
Reverse polarity
b. Case ungrounded:
Normal polarity
Normal polarity with open neutral
Reverse polarity
4. Verify the current reading is <100 uA under normal operating conditions; <300 uA
under single fault conditions for 120 VAC and <500 uA under single fault conditions for
230 VAC.
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