Medium-Voltage And High-Voltage Power Line Metal Oxide Arresters
Our Power Line Lightning Arrester offers merchants a high-quality,
reliable, and cost-effective solution for protecting electrical
infrastructure against lightning strikes. With our five-year
warranty, easy installation, and superior design, our lightning
arrester can provide consistent protection for years to come.
Power line lightning arrester for MV and HV type
● Type: MV and HV
● Application: Power line lightning arrester for MV and HV type
● MATERIAL: Polymer housing
● Color: Grey
● High quality MOV discs/ blocks
● 100% routine tested
● KEMA, CEPRI, XIHARI test report and ISO 9001 quality
certification
● Comply with GB, IEC, IEEE and other standards
Installation of power line lightning arresters at recommended
locations along the line in accordance with our line simulation
ensures anhanced overvoltage protection. Selecting the optimum line
lightning arresters, especially in terms of their quantity and
installation locations, significantly improves the reliability of
the overall line system and the quality of power that it supplies
Beneficial applications
• Improve lightning protection performance
• Reduce outages caused by poor grounding and high lightning
activity
• Reduce double-circuit outage rates / protect underbuild
distribution lines
• Provide switching surge control - structural optimization and
lower clearances
• Improve safety - prevents personal injuries and damage to
equipment
• For line upgrading and compaction - reduced insulation levels
• For live work on the line -temporarily reduce minimum approach
distance
• Achieve lower installation costs and losses in line system
(outages)
Two different power line lightning arrester designs are available
1. Non-Gapped Line Arrester (NGLA)
Non-gapped line surge arresters (NGLA) offer a high degree of
mounting flexibility and operational reliability. Depending on the
tower design and the arrangement of insulators and lines, these
arresters can either be installed directly on the insulators or on
the tower. NGLAs limit overvoltages to value levels below the
insulator withstand voltage.
Advantages of NGLA
• Most flexible solution (installation at conductor, tower,
insulator etc.)
• A disconnector is installed in series that disconnects the
arrester in case of thermal overload
This ensures further operation of the overhead line until a
replacement can be scheduled
• Offer a very high level of protection against lightning and
switching overvoltages thanks to their high energy absorption
capacity
• Designed and tested to comply with the latest IEC 60099-4
standard
2. Externally Gapped Line Arrester (EGLA)
Uchi Electric EGLA line surge arresters have an external spark gap
placed in series that galvanically isolates the active part of the
line surge arrester from the line voltage under normal conditions.
In case of lightning, the spark gap flashes over and the arrester
limits the ground fault current from several kA to a few amperes,
and extinguishes the arc within 10 ms such that no circuit breaker
operation at both line ends is needed, i.e. no reclosing operation.
Advantages of EGLA
• No leakage current, since the series gap disconnects the arrester
part of the EGLA - metal-oxide varistor (MOV) blocks - from the
system voltage under normal service conditions
• Lower arrester rated voltage required
• No disconnector and no ground lead are needed
• Suitable for multiple-circuit towers with short clearances - the
highly compact design of the EGLA and the absence of a ground lead
allow installation and lightning protection even on towers with
very small cross-arm clearances
• Better suited for live installation
• Complete EGLA solutions with polymer insulators also available
| Type | Rated Voltage | MCOV(KV) | Maximum Residule Voltage Using
an 8/20 Current Impulse (kV) | Creepage
Distance (mm) | Dry Arcing
Distance (mm) |
| 5.0kA | 10kA | 20kA |
| YH10W-3 | 3 | 2.55 | 7.5 | 8.2 | 9.2 | 250 | 146 |
| YH10W-6 | 6 | 5.1 | 15.1 | 16.3 | 18.4 | 250 | 146 |
| YH10W-9 | 9 | 7.65 | 22.6 | 24.5 | 27.5 | 370 | 178 |
| YH10W-12 | 12 | 10.2 | 30.1 | 32.6 | 36.5 | 520 | 214 |
| YH10W-15 | 15 | 12.7 | 37.7 | 40.8 | 46.1 | 650 | 250 |
| YH10W-18 | 18 | 15.3 | 45.2 | 48.9 | 55.3 | 650 | 250 |
| YH10W-21 | 21 | 17 | 52.7 | 57.1 | 64.3 | 790 | 284 |
| YH10W-24 | 24 | 19.5 | 60.3 | 65.2 | 73.5 | 920 | 318 |
| YH10W-27 | 27 | 22 | 67.8 | 73.4 | 82.6 | 1050 | 356 |
| YH10W-30 | 30 | 24.4 | 75.4 | 81.6 | 91.6 | 1200 | 392 |
| YH10W-33 | 33 | 26.7 | 82.9 | 89.7 | 99.5 | 1340 | 428 |
| YH10W-36 | 36 | 29 | 90.4 | 97.9 | 109.6 | 1340 | 428 |
| Type | Rated Voltage (kV) | MCOV(kV) | Maximum Residule Voltage Using
an 8/20 Current Impulse (kV) | Repetitive charge transfer withstand Qrs
C |
| Station class arrester |
Steep current impulse
kV | Lightning impulse
kV | Switching impulse
kV |
|
| peak value ≤ | ≥ |
| YH10W-51/134 | 51 | 40.8 | 154 | 134 | 114 | 0.4 |
| YH10W-84/221 | 84 | 67.2 | 254 | 221 | 188 | 1.0 |
| YH10W-90/235 | 90 | 72.5 | 264 | 235 | 201 | 1.0 |
| YH10W-96/250 | 96 | 75 | 280 | 250 | 213 | 1.0 |
| YH10W-102/266 | 102 | 79.6 | 297 | 266 | 226 | 1.0 |
| YH10W-108/281 | 108 | 84 | 315 | 281 | 239 | 1.0 |
| YH10W-192/500 | 192 | 150 | 560 | 500 | 426 | 1.2 |
| YH10W-204/532 | 204 | 159 | 594 | 532 | 452 | 1.2 |
| YH10W-216/562 | 216 | 168.5 | 630 | 562 | 478 | 1.2 |
