Switchgear Cable
What is a switchgear cable?
A switchgear cable is a flexible electrical cable, which is used in a switchgear system designed to isolate electrical equipment. Switchgear cable is a general term that can be applied to a number of different electrical cables. Within the system’s switches, cables such as
Trirated Cable and
2491B/6701B Cable can be found.
Control Cables YY,
CY and
SY can be found between the switches in a switchgear system.
Coil End Lead Cable is also used both within and between switches in a switchgear system. High voltage switchgear systems are located outside, whereas low voltage switchgear systems will usually involve switchgear panels that can be enclosed within a building.
What is switchgear?
Within a power system, an electricity supply is essential. However, it is necessary to protect machinery such as motors or generators from dangerous fault conditions which can occur. This is achieved by allowing the power supply to be switched on or off under no load, load conditions, or fault condition. Switchgear is a term used to describe the various pieces of equipment used for switching and protecting purposes in a power system.
What are Trirated and 2491B/6701B switchgear cables?
Trirated Cable is a flame retardant and flexible single core cable, with a class 5 plain copper conductor and PVC insulation. Tri-rated is classified as a high temperature cable because it has a maximum operating temperature of 90°C for continuous use as stated by BS6231. UL and CSA standards identify the maximum operating temperature of Trirated Switchgear Cable as 105°C; this refers to its operating temperature over a period of 15,000 hours.
2491B/6701B Switchgear Cable is a flexible cable, with a class 5 plain copper conductor and a maximum operating temperature of 90°C. 2491B/6701B has a LSZH (Low Smoke Zero Halogen) sheath. Both Trirated Cable and 2491B/6701B Cable are low voltage switchgear cables.
By what other names are switchgear cables known?
Tri-rated Cable is also commonly known as BS6231 Cable or Panel Wire.
In Europe 2491B/6701B Cable is referred to using its harmonised codes. The harmonised code for 2491B Cable is H05Z-K, which covers cables with a voltage rating of 300/500V and nominal cross sectional areas 0.5mm² to 1.0mm². The harmonized code for 6701B is H07Z-K. The voltage rating is 450/750V and includes cables with a nominal cross sectional area above 1.5mm².
2491B/6701B Cable is also commonly known as BS7211.
Which industries use switchgear cables?
Switchgear cables such as Trirated Cable and 2491B/6701B Cable are both used in automation and process control and the building and construction industry. These low voltage switchgear cables can control power to buildings or machinery.
Can you identify switchgear cables by their colour?
The insulation on a Trirated Switchgear Cable and a 2491B/6701B Switchgear Cable comes in a variety of different colours. Trirated Cable can be supplied in black, red, blue, light blue, dark blue, yellow, green/yellow, grey, brown, orange, white, violet, green and pink. 2491B/6701B Switchgear Cable can be supplied in black, blue, grey, green/yellow, red, orange, yellow, white, violet, brown and pink.
The reason for the wide range of colours is to differentiate and code the cables, which makes it easier for installers to install, revise and repair the switches.
Switchgear Cable
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