Allicdata Part #: | CG31.2-ND |
Manufacturer Part#: |
CG31.2 |
Price: | $ 1.22 |
Product Category: | Circuit Protection |
Manufacturer: | Littelfuse Inc. |
Short Description: | GDT 1200V 5KA |
More Detail: | Gas Discharge Tube 1200V 5000A (5kA) 2 Pole User ... |
DataSheet: | CG31.2 Datasheet/PDF |
Quantity: | 1000 |
Lead Free Status / RoHS Status: | Contains lead / RoHS non-compliant |
Moisture Sensitivity Level (MSL): | 1 (Unlimited) |
1200 +: | $ 1.10338 |
Series: | CG3 |
Packaging: | Bulk |
Lead Free Status / RoHS Status: | -- |
Part Status: | Active |
Moisture Sensitivity Level (MSL): | -- |
Voltage - DC Spark Over (Nom): | 1200V |
Impulse Discharge Current (8/20µs): | 5000A (5kA) |
Tolerance: | -- |
Number of Poles: | 2 |
Fail Short: | No |
Mounting Type: | User Defined |
Package / Case: | Cylinder No Lead |
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Gas discharge tube arresters (GDTs) are specialized devices designed to protect electrical equipment from voltage surges like the ones caused by lightning strikes. CG31.2 is one of the most commonly used GDTs with application fields and a wide range of working principles. It is a single-pole metal-oxide varistor arrester (MOVA) designed for voltage application on overhead distribution lines.
The CG31.2 arrester is a two-piece structure with a metal-oxide valve and an epoxy resin end bushing comprised of silicone rubber casing, rated voltage 520kVrms and maximum discharge current of 40kA. It has a wide range of applications, such as overhead distribution lines, marine installations, and overhead transmission lines.
GDTs are devices for voltage or current limiting such that the output voltage is limited to a low level, keeping the voltage below the reverse blocking point of the protective elements in the electrical equipment. The working principle of the CG31.2 arrester relies on the characteristic impedance of the MOV valve which is used to separate the upstream part from the downstream part of the arrester in order to limit the voltage during overvoltage situations. Additionally, the epoxy resin end bushing acts as a protective barrier that prevents tearing or damage of the MOV valve due to mechanical or thermal stress.
The CG31.2 GDT arrester relies on its MOVA-based structure that helps to limit the surge current and, consequently, the voltage to an acceptable level. Furthermore, the special shape and size of the electrical contacts in the MOVA increase the effective surface area, which helps to absorb more current and enhance the breaking capacity. Moreover, the epoxy resin end bushing helps to ensure reliable electrical operation by isolating the MOVA from the environment and providing shielding against premature degradation.
The CG31.2 arrester is able to protect against a wide range of voltage surges with a maximum discharge current of 40kA. The arrester must be regularly tested and inspected to maintain its protective capabilities. Over time, due to excessive stress or wear, the MOVA or the epoxy resin end bushing can degrade and must be replaced to ensure that the arrester is still able to provide the necessary protection.
In conclusion, the CG31.2 GDT arrester is a reliable and efficient device that can protect electrical equipment from voltage surges. It relies on its MOVA structure along with epoxy resin end bushing to limit the voltage during a surge. The arrester has a wide range of applications, including overhead distribution lines, marine installations, and overhead transmission lines, and must be regularly monitored and tested to ensure that it is providing the necessary protection.
The specific data is subject to PDF, and the above content is for reference
Part Number | Manufacturer | Price | Quantity | Description |
---|
CG31.2 | Littelfuse I... | 1.22 $ | 1000 | GDT 1200V 5KAGas Discharg... |
CG31.2LTR | Littelfuse I... | 1.27 $ | 1000 | GP S.A. STANDARD 1.2KV NO... |
CG31.3LTR | Littelfuse I... | 1.32 $ | 1000 | GDT 1300V 5KA THROUGH HOL... |
CG31.5LTR | Littelfuse I... | -- | 1000 | GDT 1500V 5KA THROUGH HOL... |
CG31.0L | Littelfuse I... | 2.6 $ | 1000 | GDT 1000V 5KA THROUGH HOL... |
CG31.2L | Littelfuse I... | 1.52 $ | 1000 | GDT 1200V 5KA THROUGH HOL... |
CG31.1L | Littelfuse I... | 1.52 $ | 1000 | GDT 1100V 5KA THROUGH HOL... |
CG31.3L | Littelfuse I... | 1.52 $ | 1000 | GDT 1300V 5KA THROUGH HOL... |
CG31.5L | Littelfuse I... | -- | 3383 | GDT 1500V 5KA THROUGH HOL... |
CG31.5 | Littelfuse I... | 2.6 $ | 1200 | GDT 1500V 5KAGas Discharg... |
CG31.0 | Littelfuse I... | 2.6 $ | 994 | GDT 1000V 5KAGas Discharg... |
CG31.3L-01 | Littelfuse I... | 1.44 $ | 350 | GDT 1300V 5KA THROUGH HOL... |
CG31.5L-07 | Littelfuse I... | 1.44 $ | 345 | GDT 1500V 5KA THROUGH HOL... |
CG31.0LTR | Littelfuse I... | -- | 500 | GDT 1000V 5KA THROUGH HOL... |
CG31.1 | Littelfuse I... | 1.52 $ | 1000 | GP S.A. STANDARD 1.1KV NO... |
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