How do you calculate lightning arrester rating?
Table of Contents
Selection of LA
- For 220KV side: Voltage rating = 1.1 × 220 × 0.8 = 193.6KV. Power frequency spark over voltage = 1.5 ×193.6 = 290.4KV.
- For 110KV side: Voltage rating = 1.1 × 110×0.8 = 96.8KV.
- For 66kV Side. Voltage rating = 1.1 × 66×0.8 = 58.08kV.
- For 11 KV side: Voltage rating = 1.1× 11×0.8 = 9.68KV.
What is the capacity of lightning arrester?
Lpes.in 10KA Spike Lightning Arrester, Breaking Capacity: 150KA, Making Capacity: 100KA
Rated Current | 10KA |
---|---|
Making Capacity | 100KA |
Breaking Capacity | 150KA |
Brand | lpes.in |
Voltage Level | High-Voltage |
What is discharge class of lightning arrester?
ABB Surge Arresters Overview
Surge Arrester Type | POLIM-D | POLIM-C..LB |
---|---|---|
Continuous Operating Voltage Uc | ≤ 44kV | ≤ 4.8kV |
Nominal Discharge Current ln | 10kA | 10kA |
High Current Impulse | 100kA | 100kA |
IEC Line Discharge Class | 1 | 2 |
What is discharge current of lightning arrester?
The nominal discharge current is the peak value of lighting current impulse with wave shape as 8/20µs, which is used to classify an arrester, It is also a basis for calculating lightning impulse protection level, LIPL of a surge arrester.
What is ESE lightning arrester?
The ESE Lightning Arrester, also known as Active Lightning Arrester, provide an enhanced Radius of Protection, reducing the number of Lightning Arresters and down conductors needed for your building or solar project while still providing complete protection.
What is rated voltage of surge arrester?
It is necessary to use an 18 kV arrester with an MCOV of 15.3 kV. Finally, for a resistance-grounded 13.8 kV system, the choice will be between arresters rated 12 kV, 15 kV and 18 kV, depending on the time needed to relay ground faults off the system.
What is MCOV in lightning arrester?
Maximum continuous operating voltage rating (MCOV). The MCOV rating is usually 80% to 90% of the duty cycle rating. Table 2 lists the MCOV ratings of various MOV arresters. The MCOV rating of an MOV arrester is important because it’s the recommended magnitude limit of continuously applied voltage.