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GENERAL CABLE SPECIFICATION MV-RIG Specification No. GCC-MVRIG FOR SINGLE AND THREE PHASE



Specification No. GCC-MVRIG
Issued April 08, 2008














GENERAL CABLE SPECIFICATION MV-RIG
Specification No. GCC-MVRIG

FOR

SINGLE AND THREE PHASE
MEDIUM VOLTAGE MARINE SHIPBOARD CABLE

AND

MEDIUM VOLTAGE VARIABLE FREQUENCE DRIVE
MARINE SHIPBOARD CABLE

April, 2008





















Specification No. GCC-MVRIG
Issued April 08, 2008
2
1.0 Scope

1.1 This specification describes General Cables MV-Rig product line. The MV-

Rig product line is designed as a flexible 5kV to 35kV Marine Shipboard Power

Cable. Options include cable designs for a Variable Frequency Drive application,

and additional physical production obtained via an additional braided armor with

an outer sheath. In all cases, this product line is manufactured and tested per UL

1309 / CSA 245 Type E Marine Shipboard Cable, and IEEE 1580 Type E Marine

Shipboard Cable.

2.0 Ratings

2.1 Voltage, 5kV to 35kV

2.2 Temperature, 90C per UL 1309 / CSA 245 Type E and 90C per IEEE 1580

Type E. Manufactured in accordance with UL 1072 MV-105 for a 105C

rating.

3.0 Applications

3.1 For medium volt, 5kV to 35kV, power and variable frequency drive

applications in commercial marine shipboard applications.

4.0 General Construction

4.1 Single Conductor Unarmored


4.1.a. Flexible stranded coated copper conductor, semi-conducting tape,


extruded conductor stress control layer, metalic shield consisting of a


tinned copper/black nylon braid, semi-conducting tape, and thermoset


Ethylene Propylene Rubber (Type E) insulation, and an overall thermoset


Chlorinated Polyethylene (Type CPE) jacket.

4.2 Single Conductor - Optional Armored and Sheathed


4.2.a. Additional physical protection consisting of a braided bronze


armor, separator tape, and an overall thermoset Chlorinated Polyethylene


(Type CPE) jacket.


4.3 Multi-conductor Unarmored


4.3.a. Three phase conductors as follows:


4.3.b. Flexible stranded coated copper conductor, semi-conducting tape,


extruded conductor stress control layer, metalic shield consisting of a


tinned copper/nylon braid. One phase utilizes black nylon, one uses blue,


and one uses red.


4.3.c. Each phase conductor is cabled with an uninsulated tinned copper


flexible strand tinned copper ground wire, fillers as necessary, and


wrapped with an overall binder tape.


4.3.d. An overall thermoset Chlorinated Polyethylene (Type CPE) jacket.

4.4 Multi-conductor Optional Armored and Sheathed


4.4.a. Additional physical protection consisting of a braided bronze


armor, separator tape, and an overall thermoset Chlorinated Polyethylene


(Type CPE) jacket.

5.0 Conductors

5.1 Fully annealed flexible tinned copper in accordance with IEEE 1580 and UL

1309 / CSA 245. Specific gauge sizes and ground wire sizes are specified on

individual catalog data sheets.

Specification No. GCC-MVRIG
Issued April 08, 2008
3
5.1 Conductor Stress Control Layer

5.1.a. A semi-conducting black extruded compound is applied over a semi-

conducting tape. The thickness of the extruded semi-conduction layer shall in

accordance with UL 1072.


5.1.b. Requirements


5.1.b.1 The conductor stress control layer shall be smooth and firmly


bonded to the overlying insulation.



5.1.b.2. The extruded conductor stress control layer shall be able to meet


the following electrical and physical properties:



5.1.b.2.a. Maximum volume resistivity, ohm-centimeters



as room temperature and at 90C (194F).


50,000



5.1.b.2.b. Physical properties after aging in air oven for



168 hours at 121C;



Elongation at rupture, minimum percent:


100



5.1.b.2.c. Brittleness temperature, not warmer than:
-10C


5.2. Insulation

5.2.1. Phase conductors


5.2.a. Material


5.2.a.1. Thermoset Ethylene Propylene Rubber, (IEEE 1581 Type E).


5.2.b. Thickness


5.2.b.1. The minimum average thickness shall not be less than specified


on the individual catalog data sheets. The minimum thickness at any


point shall not be less than 90 percent of the specified average thickness.


5.2.c. Requirements


5.2.c.1. Initial physical properties:



Tensile strength, minimum, psi


700



Elongation at rupture, minimum, percent


250


5.2.c.2. Physical properties after aging in air oven



for 168 hours at 121C



Percent retention of original, minimum




Tensile strength




75




Elongation





75


5.2.c.3. Permittivity (SIC) and power factor (tan delta)



of cables (immersed in water at room temperature



for 24 hours)




Permittivity (SIC), maximum


4.0




Power Factor (tan delta), maximum percent
2.0


5.2.c.4. Moisture absorption when tested by the electrical



method (immersed in 75C water).




Dielectric constant after 24 hours immersion, max 4.0




Increase in capacitance, 1 to 14 days, max %
3.5




Increase in capacitance, 7 to 14 days, max %
1.5




Stability factor after 14 days, max


1.0




Alternate to stability factor, 1 to 14 days, max
0.5


Specification No. GCC-MVRIG
Issued April 08, 2008
4


5.2.c.5. Moisture absorption when tested by the gravimetric



Method (immersed in 70C water for 7 days)




Moisture absorption, max, milligrams/sq in
10.0


5.2.c.6. Insulation resistance constant (K) at 15.6C, M -km, min 6100

6.0 Insulation Shielding

6.1. A layer of extruded black semi-conducting compound shall be applied over

the insulation and a semi-conduction tape shall be applied over the extruded

layer.


6.1.a. Extruded black semi-conducting compound


6.1.a.1. Thickness: The minimum average thickness of the extruded


shielding layer shall not be less than 35 mils (0.89 mm). The minimum


thickness at any point shall not be less than 28 mils (0.71 mm).


6.1.a.2. Requirements: The extruded semi-conducting compound shall


meet the requirements specified in UL 1072.


6.1.a.3 . Identification: A print legend shall be on the surface of the


extruded black semi-conductor compound, with at a minimum, the


following statement;



CONDUCTING JACKET REMOVE WHEN SPLICING OR



TERMINTING


6.1.a.4. Stripability: The tension required to remove a ½ inch wide strip


at room temperature shall not be less than 3 pounds nor more than 24


pounds. The shielding shall be removable without damaging the


insulation, leaving no conducting material which can not be readily


removed. These requirments do not apply when a bonded insulation


shield layer is specified.


7.0 Phase Identification & Metallic Component

7.1. Cables shall have a nylon-copper braid shield consisting of coated copper

wire meeting the requirments of 5.1, and nylon threads. The copper wire

coverage shall not be less than 60 percent. The nylon thread colors shall be as

follows; For a single conductor cable, black. For a three conductor cable, black,

white, red.

7.2. The nylon shall be applied in the opposite direction to the copper and in

such a manner as to form a composite braid with the copper.

8.0. Cable Assembly

8.1. For Three Phase Cable


8.1.a. Three insulated and shielded phase conductors together with a



uninsulated tinned copper flexible stranded ground wire and



suitable fillers as required, wrapped in a flame retardant binder



tape and cabled round with a left-hand lay not exceeding 21 times



the calculated diameter of one insulated phase conductor.

8.2. For Variable Frequency Drive Cable


8.2.a. Same as above except that instead of one ground, three green


insulated grounds are equally spaced inbetween the three phase


conductors.

9.0. Optional Inner Jacket

9.1. If specified, the optional inner jacket shall meet all requirments of the outer

sheath (jacket) as specified in paragraph 11.0 of this specification.