ABB 2CTB802342R0000 surge protector

Abb2ctb802342R000 surge protector is an important device for protecting power system from surge damage. Its main function is to limit instantaneous overvoltage, thus protecting power equipment and signal transmission lines. This kind of surge protector is usually used in low-voltage electrical system to ensure the safety and reliability of the system.

The technical specifications of surge protector include rated voltage, maximum continuous working voltage, surge current, nominal discharge current, maximum discharge current, residual voltage, voltage protection level (UP), response time, short-circuit current tolerance and backup protection fuse.

These parameters determine the performance of surge protectors in different application scenarios. For example, the rated voltage and the maximum continuous working voltage determine the normal working voltage range that the equipment can withstand, while the surge current and the nominal discharge current reflect the endurance of the equipment in the face of instantaneous overvoltage.

The installation method of surge protector is also very important. According to the relevant standards of construction and installation engineering, surge protectors are usually installed in power distribution cabinets and connected to the power distribution system through multiple terminals. Ensure that the grounding terminal (GND) is well connected during installation to ensure the grounding protection of the system.

. In addition, distance parameters (such as d1, d2 and d3) should be considered during installation, and the sum of these parameters should not exceed 50 cm to ensure the rationality and standardization of installation.

From the classification point of view, surge protectors can be divided into many types, including unipolar and tripolar configurations. ABB2ctb802342R000 model may belong to one of the specific configurations. Please refer to Abb's official technical documents or selection guide for specific configuration methods. In addition, the test method of surge protector is also an important part of its performance evaluation. Usually, the 8×20 test waveform is used to evaluate its maximum current rating, that is, the current that rises from zero to the maximum amplitude and falls back to zero within 12 microseconds.

Abb2ctb802342R000 surge protector is a high-performance electrical protection device, which is widely used in low-voltage power systems. Its performance depends on a variety of technical parameters and installation specifications, so it is necessary to operate in strict accordance with relevant standards when selecting and using it.

ABB Ovr series surge protectors (mainstream series)

Features: Modular design, high discharge capacity, conforming to IEC 61643 standard, suitable for low-voltage distribution system (TN-S/TN-C/TT/IT).

Typical model:

OVR T1 series (Type 1):

Model example: OVR BT12 40-275S

It is used at the incoming terminal of buildings (LPZ0→LPZ1) to directly protect lightning current (10/350μs waveform).

The maximum discharge current (Iimp) can reach 25kA(10/350μs), and the voltage protection level (UP) is ≤ 1.5kV..

OVR T2 series (Type 2):

Model example: OVR PTS40-275-1S

It is used for secondary protection (LPZ1→LPZ2) of distribution cabinets, suppressing induced lightning and operating overvoltage (8/20μs waveform).

The nominal discharge current (in) In)40kA, and the maximum discharge current (IMAX) Imax)100kA.

OVR T1+T2 combination series:

Model example: OVR TC12-275/40

Integrated Type 1+Type 2 function, suitable for occasions with limited space.