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Electrical Systems Materials

3842Electrical Systems Compounds and Lubricants

MN · 2025 Standard Specifications✓ Full text on BuildSpecBook pages 1033–0 Save this section

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3842.1SCOPE

Provide the required electrical systems compounds and lubricants to Materials as specified in the Contract for lubricating and preventing corrosion and oxidation.

3842.2REQUIREMENTS

A Anti-seize and Lubricating Compound “Bridge Grease” Use an approved anti-seize and lubricating compound listed on the APL, Bridge and specified as “Bridge grease.” B Conductor Anti-oxidant Joint Compound Before terminating conductors, coat conductor ends and connectors with anti -oxidant joint compound meeting the following:

(1)Color: Black-Gray
(2)Temperature Range: -22°F to 2,450°F
(3)Thickener Type: Calcium Complex
(4)Particle Size: 3.5 Mil Maximum (75 microns)
(5)Density (G/CM3): 1.31 to 1.39
(6)ASTM D92, Standard Test Method for Flash and Fire Points by Cleveland Open Cup

Tester, Flash Point: >475°F

(7)ASTM B117, Standard Practice for Operating Salt Spray (Fog) Apparatus, Salt Fog Test,

Hours: 4,000

(8)ASTM D130, Standard Test Method for Corrosiveness to Copper from Petroleum Products

by Copper Strip Test, Copper Corrosion Test at 212°F, 24 hours: No Corrosion

(9)ASTM D217, Standard Test Methods for Cone Penetration of Lubricating Grease, Work

Penetration, 60 Strokes at 77°F: 260-310

(10)ASTM D217, NLGI Grade: 1/2
(11)ASTM D566, Standard Test Method for Dropping Point of Lubricating Grease, Dropping

Point: 572°F

(12)Torque Coefficient (K factor): 0.11
(13)ASTM D1264, Standard Test Method for Determining the Water Washout Characteristics

of Lubricating Grease, Water Washout, percent loss at 100°F: <1.00

(14)ASTM D1264, Water Washout, percent loss at 175°F: <2.75
(15)ASTM D1743, Standard Test Method for Determining Corrosion Preventative Properties

of Lubricating Greases, Bearing Rust Test: Pass

(16)ASTM D2596, Standard Test Method for Measurement of Extreme Pressure Properties of

Lubricating Grease (Four Ball Method), Four Ball EP Load Wear Index: 127.3

(17)ASTM D2596, Four Ball EP Last Non-Seizure Load (scar): 100 kgf
(18)ASTM D2596, Four Ball EP Last Seizure Load (scar): 620 kgf
(19)ASTM D2596, Four Ball EP Weld Load: 800 kgf
(20)ASTM D4170, Standard Test Method for Fretting Wear Protection by Lubricating

Greases, Fretting Wear at 73°F, 22 hours, milligram loss: 7.15 C Ferrous Metal Electrically-Conductive Corrosion Resistant Compound Provide a brush on ferrous metal electrically-conductive corrosion resistant compound on metal threaded conduit fittings to prevent corrosion, oxidation, improve conductivity, and the integrity of electrical connections.

(1)Color: Copper
(2)Content: 65 – 70 percent lubricating greases, 25 – 30 percent Copper, and less than

1 percent Zinc

(3)Flash Point: >590°F
(4)Initial Boiling point: >599°F
(5)Blend of pure polished colloidal copper, rust, and corrosion inhibitors
(6)Can be brushed on at – 50°F and 250°F
(7)Meeting NEC Article 300.6

3842.3SAMPLING AND TESTING

The Department reserves the right to sample, test, inspect, and accept or reject electrical systems compounds and lubricants based on its own tests.

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Source: Minnesota Standard Specifications for Construction, 2025 Edition. Pages 1033–0 of 1,081. View official source ↗

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