KLEIN TOOLS RT390 Circuit Analyzer Instruction Manual
- June 9, 2024
- KLEIN TOOLS
Table of Contents
KLEIN TOOLS RT390 Circuit Analyzer
GENERAL SPECIFICATIONS
Klein Tools RT390 is a circuit analyzer that tests the wiring condition at an electrical outlet, displays AC line voltage, inspects GFCI and AFCI devices with time to trip device, and performs voltage drop tests at 12A, 15A and 20A current loads. The tester is designed for use with North American 120V AC 3-wire electrical outlets.
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Environment: Indoor. Do NOT expose to moisture rain or snow.
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Operating Altitude: 6562 ft. (2000m)
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Relative Humidity : <85% non-condensing
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Operating Temp: 32° to 122°F (0° to 50°C)
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Storage Temp: -4° to 140°F (-20° to 60°C)
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Dimensions: 7.1″× 2.7″× 1.5″ (3.86 × 6.93 × 17.93 cm)
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Cord: 14AWG, 15A, 12″ (30.5cm) NEMA 5-15P to IEC 320 C13
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Weight: 10.92 oz. (311.1 g) including batteries
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Battery Type : 3 x 1.5V AAA Alkaline
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Standards: Conforms to UL STD.61010-1, 61010-2-030, 1436
Certified to CSA STD C22.2 # 61010-1, 61010-2-030, 160 -
Pollution degree : 2
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Drop Protection: 6.6 ft. (2m)
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Ingress Protection: IP40 dust resistant
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Safety Rating: CAT III 135V
CAT III: Measurement category III is applicable to test and measuring circuits connected to the distribution part of the building’s low-voltage MAINS installation.
Specifications subject to change.
ELECTRICAL SPECIFICATIONS
RT390 is designed for use with North American 3-wire grounded 120V electrical outlets. DO NOT connect to higher voltage electrical supplies.
POWER ON/OFF
Press and hold the Power/Reset button ① for two seconds to power ON/ OFF
the tester. When the tester is powered ON and not connected to a circuit, the
LCD ② will display “OOO”, “Open Hot” condition.
NOTE: The tester will automatically power OFF after 5 minutes of
inactivity to conserve battery life.
NOTE: Auto-Power Off is disabled if tester is plugged into an energized
circuit
WIRING CONDITION
With the tester powered ON and inserted in the outlet, the “ENERGIZED” Indicator Ⓑ will illuminate, and the Circuit Energized Indicator B will appear at the top of the LCD if voltage is detected. The tester will display the wiring condition Ⓔ and the line voltage Ⓓ on the LCD. If removed from the outlet, the tester holds the information on the LCD for 10 seconds and the Hold Indicator Ⓛ will be displayed. During this time, the Wiring Condition Indicator Ⓔ will blink. The LCD will reset once it is plugged into another circuit, or, if no voltage is detected, the Wiring Condition Indicator E will blink during the time-out period.
If the tester indicates that the outlet is not wired correctly, consult a
qualied electrician.
NOTE: Conditions NOT indicated include, but are not limited to, quality
of ground, multiple hot wires, reversal of neutral and ground conductors, and
combinations of defects other than dual open neutral and ground.
NOTE: All appliances or equipment on the circuit being tested should be
unplugged to help reduce the possibility of erroneous readings.
*** Expected voltage reading on LCD based on the indicated wiring
condition.
NOTE:** If the detected voltage is either low (30–85V AC) or high (135–150V
AC), the voltage displayed on the LCD will change from white to red. It is
possible to have the voltage displaying in red (indicating low or high
voltage) and the green “CORRECT WIRING” message Ⓔ simultaneously
OPERATING INSTRUCTIONS
GFCI, AFCI, AND 30mA GROUND FAULT FUNCTIONS
NOTE: Refer to the GFCI, AFCI, or 30mA Ground Fault devices’ user manual for information on installation and operation prior to using this tester
Power ON the tester and plug into the outlet to be tested, noting the wiring conditions. The wiring conditions Ⓔ should indicate “CORRECT WIRING”, the “ENERGIZED” Indicator ③ should be illuminated, and the Circuit Energized Indicator Ⓑ should appear at the top of the LCD.
If the tester indicates that the outlet is not wired correctly, DO NOT attempt to initiate an electrical testing event. Consult a qualified electrician.
Press the following buttons to initiate an electrical fault:
- The GFCI button ④ will create 6mA to 9mA ground fault to trip the GFCI device.
- The AFCI button ⑤ will simulate a parallel arc condition to trip the AFCI device.
- 30mA Ground Fault Test button ⑥will create a 30mA ground fault to trip a 30mA GFCI device.
NOTE: 30mA ground fault protection is not inherent in all models of GFCI circuit breakers.
If the Circuit Not Energized Indicator Ⓚ is displayed on LCD, and the “ENERGIZED” Indicator ③ is not illuminated, reset the AFCI, GFCI, or 30mA Ground Fault device by pressing its reset button. After reset, the wiring conditions Ⓔ should indicate “CORRECT WIRING”, the “ENERGIZED” Indicator ③ should be illuminated, and the Circuit Energized Indicator Ⓑ should appear at the top of the LCD.
If the circuit remains Energized, or any other condition is indicated other than Not Energized, the device being tested may be miswired, may not be installed correctly, or may not be functioning appropriately. Consult a qualified electrician.
NOTE: The GFCI ④ , AFCI ⑤ , and 30mA ⑥ buttons will be deactivated if the wiring is not correct. An error message N will appear on the LCD.
NOTE: Allow 20 seconds between successive AFCI testing events.
NOTE: In AFCI testing, an error message that the tester needs to cool
down Ⓙ may appear on the LCD. A successive AFCI test cannot be initiated
until the unit cools down and the message is off the LCD.
NOTE: Some models of AFCI devices may not trip if the cable run from test
location to breaker is longer than 100 ft. (30.48 m).
NOTE: If the test is successful, the AFCI test fails to trip, the RT390
will perform a Load Test in the background to determine if high line impedance
may be the reason for the failed trip. An error message Ⓜ will appear on the
LCD.
TEST LOAD FUNCTION
Power On the tester and plug into the outlet to be tested, noting the wiring
conditions. The wiring condition Ⓔ should indicate “CORRECT WIRING”, the
“ENERGIZED” Indicator ③ should be illuminated, and the Circuit Energized
Indicator Ⓑ should be displayed.
If the tester indicates that the outlet is not wired correctly, DO NOT attempt
to initiate an electrical testing event. Consult a qualified electrician.
Press the Load Test button ⑦ , and the 12A, 15A, and 20A test load voltage and percentage voltage drop will appear on the screen. NOTE: If the voltage drop is greater than 5%, the background color will change to red to indicate a large voltage drop.
NOTE: During a Load test, a message may display that the tester needs to cool down Ⓙ . A successive Load test cannot be initiated until the unit cools down and the message is no longer displayed.
BATTERY REPLACEMENT
When the Battery Life Indicator Ⓒ turns red, the batteries must be replaced.
- Loosen screw from battery cover 8 .
- Replace 3 x AAA batteries (note proper polarity).
- Replace battery door and fasten securely with screw
To avoid risk of electric shock, unplug from any voltage source before
removing battery door.
To avoid risk of electric shock, do not operate tester while battery door is
removed.
CLEANING
Be sure tester is turned off and wipe with a clean, dry lint-free cloth. Do not use abrasive cleaners or solvents.
STORAGE
Remove the batteries when tester is not in use for a prolonged period of time. Do not expose to high temperatures or humidity. After a period of storage in extreme conditions exceeding the limits mentioned in the General Specifications section, allow the tester to return to normal operating conditions before using.
WARRANTY
DISPOSAL / RECYCLE
Do not place equipment and its accessories in the trash. Items must be properly disposed of in accordance with local regulations. Please see www.epa.gov/recycle for additional information.
CUSTOMER SERVICE
KLEIN TOOLS, INC.
450 Bond Street Lincolnshire, IL 60069
1-800-553-4676
[email protected]
www.kleintools.com
