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Manual 89250890 3-7 SYSTEM COMPONENT DESCRIPTION

SYSTEM COMPONENT DESCRIPTION N7500

3.04 Electrodes

The most important part of the N7500 System is the electrode. Since the N7500 system uses only DC power, the

electrodes must be formulated and manufactured for use exclusively with Direct Current.

The use of Victor Arcair Jointed Jetrods Copperclad DC Electrodes is highly recommended. These electrodes are

manufactured to Victor Arcair speciﬁcations to provide the best electrical conductivity, to maintain proper electrode

diameter at the point of the arc, and to minimize carbon sublimation. A male/female joint enables electrodes to

be joined together while the gouging operation is taking place.

Electrode Diameter Gouge Width Amperage

Inch mm Inch mm Min Max

⁄

7.9

⁄

11.1 400 450

⅜

9.5

12.7 450 600

12.7

⁄

20.7 800 1000

⅝

15.9

⁄

24.9 1000 1250

19.1

1⁄

27.0 1250 1600

Chart 3-11: Electrode Selection

The formulation and design of the Jetrods Electrodes embody numerous laboratory-proven advantages under the

user’s production conditions. Among these advantages are:

• Cooler operation due to a small incandescent area at the tip and joint

• Excellent arc stability

• High metal-removal rates

• Uniformity of diameter

• Clean grooves or cuts

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