Ground fault/leakage detector with the artifical neutral an-1 (28 pages)
Summary of Contents for AEMC 6681
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Cable Locator Transmitter/Receiver Model 6681 User Manual ENGLISH ® www.aemc.com CHAUVIN ARNOUX GROUP...
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Statement of Compliance Chauvin Arnoux , Inc. d.b.a. AEMC Instruments ® ® certifies that this instrument has been calibrated using standards and instruments traceable to international standards. We guarantee that at the time of shipping your instrument has met its published specifications.
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& Alligator Clips (Rated 1000V CAT IV) ..............Cat. #2140.62 Mini Ground Rod ....................... Cat. #5000.79 Case – Replacement Soft Carrying Case..............Cat. #5000.81 Adapter – 110V Outlet w/4mm Banana Plugs............. Cat. #2118.49 For accessories and replacement parts, visit our store at www.aemc.com. Model 6681 Cable Locator...
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Thank you for purchasing the Model 6681 Cable Locater Transmitter and Receiver. For best results read this user manual carefully and follow all precautions for its use. SYMBOLS Danger. Refer to this data sheet whenever this danger symbol appears. Indicates conformity with European directives, in particular LVD and EMC.
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CAT III: corresponds to measurements on building installations. Example: distribution panel, circuit-breakers, machines or fixed industrial devices. CAT II: corresponds to measurements taken on circuits directly connected to low- voltage installations. Example: power supply to electro-domestic devices and portable tools. Model 6681 Cable Locator...
1. INTRODUCTION The Cable Locator Model 6681 detects telecommunications cables, data cables, electric power supply cables, and metal pipes in installations of category III (or lower), at voltages of 300V (or less) with respect to ground. The instrument is a portable device comprising a transmitter, receiver, and accessories.
"+" input/output terminal for voltage measurement and injection signal to system under test. "COM" input/output terminal/Grounding terminal. Note that if one of the POWER, CODE SEL, or LEVEL SEL keys is active, the other two are inactive. Model 6681 Cable Locator...
: Flashlight ON/OFF. : Cable detection mode or Line voltage detection mode. MANUAL: Manual or automatic cable detection mode. : Decrease received sensitivity in manual mode. : Increase received sensitivity in manual mode. Buzzer. Fig. 4 Model 6681 Cable Locator...
3. OPERATION GETTING STARTED The best way to learn to use the Model 6681 cable locater is to follow the example below: 3.1.1 SETTING UP Obtain a length of sheathed 3-conductor cable with a cross section of at least 0.0625”.
3.1.3 NEXT STEP: 2 TRANSMITTER CONNECTION MODES Only these transmitter connection modes can be used to locate conductors with the Model 6681 Cable Locator. Single-pole application Connect the transmitter to a single conductor. If the signal transmitted by the transmitter is a high-frequency signal, only one conductor can be detected and traced.
• The circuit must be de-energized. • The neutral wire and the ground wire must be connected and operational. • Connect the transmitter to the phase and to the ground wire as shown in Fig. 10. Model 6681 Cable Locator...
• The circuit must be de-energized. • All the other wires must be grounded as shown in Fig. 11. • Connect the transmitter to the wire under test and to ground as shown in Fig. 11. Model 6681 Cable Locator...
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Refine the detection by setting the power level transmitted by the transmitter and the sensitivity of the receiver in manual mode. • When the wire is traced, the place at which the signal received by the receiver falls off suddenly is the location of the break. Model 6681 Cable Locator...
If the receiver goes beyond the location of the break, to the right, it will display F. If the receiver is placed right on the break, no line code will be displayed, because of the superposition of the signals from the two transmitters. Fig. 12 Model 6681 Cable Locator...
The ground connected to the transmitter can be an auxiliary ground, using the grounding terminal of a power outlet, a properly grounded water pipe, or the mini ground rod supplied with the Model 6681. • When the line is traced, the place at which the signal received by the receiver falls off suddenly is the location of the break.
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The transmitter is connected to a metallic helical tube (flexible metallic tube or pipe) and to an auxiliary ground as shown in Fig. 14. • The measurement method is identical to that used in §3.1. Fig. 14 Model 6681 Cable Locator...
Connect the transmitter to the pipe and to ground. Fig. 15 NOTES • The transmitter must be grounded at a safe distance from the pipe to be detected. If the distance is too short, the signals and the circuit cannot be located precisely. Model 6681 Cable Locator...
Connect the transmitter as shown in Figure 16. Fig. 16 NOTE: Refine the detection by setting the power level transmitted by the transmitter and the sensitivity of the receiver in manual mode. Model 6681 Cable Locator...
The most powerful signals represent the precise position of the circuit. • The longer the distance between the signals transmitted (by the transmitter) and the receiver, the lower the power of the signals received and the lower the depth of detection possible. Model 6681 Cable Locator...
The depth of detection varies according to the medium in which the cable is located and according to the manner of use. It is generally less than 1.5’. • Adjust the power transmitted by the transmitter according to the various radii of detection. Model 6681 Cable Locator...
• Adjust the power transmitted by the transmitter according to the various radii of detection. • Select manual mode on the receiver and a suitable receive sensitivity to locate the circuit precisely. Model 6681 Cable Locator...
• If the impedance of the short-circuit is greater than 20Ω, try using the method of searching for a break in a circuit (see §3.2.2) to find the court-circuit. Model 6681 Cable Locator...
6 to 7.5’. The measurement method is identical to that used in §3.1. Fig. 21 NOTE: In this application, the influence of the moisture in the floor or wall on the depth of detection is negligible. Model 6681 Cable Locator...
• When several transmitters are used, each transmitter must be set to a different transmission code. • If only one transmitter is used, make several measurements with different connections between the transmitter and the various pairs. Model 6681 Cable Locator...
To eliminate this effect, connect as shown in Fig. 24, where the loopback line uses a separate cable to increase the effective radius of detection. With a cable extender (see Fig. 24), it is possible to obtain a detection distance of up to 7.45’. Fig. 24 Model 6681 Cable Locator...
The higher the voltage and the shorter the distance from the circuit, the more bars are displayed and the higher the frequency of the audible signal. Model 6681 Cable Locator...
The transmitter does not have an automatic power-off function. 4.5.2 RECEIVER If you have not pressed a button on the receiver within 10 minutes, the receiver automatically powers OFF. Press the ON/OFF key to turn it back ON. Model 6681 Cable Locator...
9.5 × 3.07 × 1.52” (241.5 × 78 × 38.5mm) Weight Approximately 9.8 oz (280g) without battery Approximately 12 oz (360g) with battery NOTE: The depth of detection also depends on the material and the specific application. Model 6681 Cable Locator...
COMPLIANCE WITH INTERNATIONAL STANDARDS Electrical Safety Compliant with standards EN 61010-1 Electromagnetic Compatibility Compliant with standard EN 61326-1 Model 6681 Cable Locator...
If the fuse is blown, replace it with a fuse of the same specifications. This fuse is a fast-blow type. Do not replace it with a slow-blow or wire type, because this could jeopardize the safety of the instrument. Model 6681 Cable Locator...
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Phone: (800) 945-2362 (Ext. 351) • (603) 749-6434 (Ext. 351) Fax: (603) 742-2346 E-mail: techsupport@aemc.com LIMITED WARRANTY The Model 6681 is warranted to the owner for a period of two years from the date of original purchase against defects in manufacture. This limited warranty is given ® by AEMC Instruments, not by the distributor from whom it was purchased.
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Phone: (800) 945-2362 (Ext. 360) • (603) 749-6434 (Ext. 360) E-mail: repair@aemc.com CAUTION: To protect yourself against in-transit loss, we recommend you insure your returned material. NOTE: You must obtain a CSA# before returning any instrument. Model 6681 Cable Locator...
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