Product Overview:GW4-363/420/550D(W)/J4000-63 outdoor HV AC disconnect switch
This disconnect switch is a kind of outdoor high - voltage (HV) electricity transmission equipment operating at a three - phase AC frequency of 50Hz/60Hz. It is used for breaking or connecting HV lines under no - load conditions, enabling the change and connection of the lines and the alteration of the electricity flow path. In addition, it can be used to provide safe electrical insulation for HV electrical apparatuses such as buses and breakers. The switch can open and close inductive/capacitive current and is capable of opening and closing the bus - transfer current.
Specifications and Parameters:
| 1 | Rated voltage | kV | 420 | 550 | ||
| 2 | Rated current | A | 2500 | 4000 | 2500 | 4000 |
| 3 | Rated frequency | Hz | 50/60 | |||
| 4 | Rated peak withstand current | KA | 130 | 164 | 130 | 164 |
| 5 | Rated short time withstand current | KA | 50 | 63 | 50 | 63 |
| 6 | Rated duration | s | 3 | 2 | 3 | 2 |
| 7 | Termminal tension | |||||
| Longitudinal inertia in horizontal | N | 2000 | 3000 | |||
| Cross in horizontal | N | 1500 | 2000 | |||
| Vertical | N | 1500 | 2000 | |||
| 8 | a) 1min power frequency withsiand voltage | |||||
| Phase -to-earih and between phases | kV | 520 | 620 | |||
| Across isolating distance | kV | 610 | 800 | |||
| At mini distance in the closing of the earthing switch | kV | 484 | 635 | |||
| b) Rated lightning impulse withstand voltage | ||||||
| Phase-to-earth and between phases | kV | 1425 | 1550 | |||
| Across isolating distance | kV | 1425()+240 | 1550(+315) | |||
| c )Rafed switching impulse withstand voltage | ||||||
| Phase -to-earth and between phases | kV | 1575/1050 | 1760/1175 | |||
| Across isolating distance | kV | 900(+345) | 900(+450) | |||
| d) Frequency withstand voltage on auxiliary and control circuits | V | 2000 | ||||
| 9 | Switching bus changing current capability of the disconnector | |||||
| voltage | V | 350 | ||||
| current | A | 2400 | ||||
| open and close | Times | 100 | ||||
| 10 | Switching small current capability of the disconnector | |||||
| voltage | kV | 420√3 | 550√3 | |||
| Capacitance current | A | 1 | 2 | |||
| Conduction current | A | 0.5 | 1 | |||
| Open and cose | Times | 3 | ||||
| 11 | Switching induced current capability of the earthing switches | |||||
| electromagnetically induced current (current/vottage) | A/kV | 160/10 | 160/20 | |||
| electrostatically induced current (current/voltage) | A/kV | 18/20 | 25/25 | |||
| Open and close | Times | 10 | ||||
a) Ambient temperature:-50℃~+55℃℃
b) Altitude above sea level: not exceed 1000m
c) Wind speed: no more than 34m/s
d) lced thickness: no more than 20mm
e) Earthquake: no more than 9 degree
f) Dirtiness condition: suitable for pollution region lV class(GB/T 5582) or E class ( GB/T 26218.1 ) and below.
g) Sunlight radiation intensity 1000W/m² (sunny day noon ).
Product Features:
Integral chassis
The product chassis adopts an integrated design to ensure that the upper conductive does not generate a large displacement under the tensile force of the terminal, and improves the reliability of the product closing
Sealed housing
The bearing housing is designed according to the maintenance-free requirements. The bearing seat is sealed by a fully sealed rain cover, wool felt seal and sealing ring.Water vapor, dust and harmful gases cannot enter, and the grease in the bearing does not drain during the life cycle.,does not cure, especially suitable for windy sand areas.
Optimized contact and finger structure
The finger is made of pure copper and has a silver plating process. it has strong flow capacity and long mechanical life. The stamping process ensures the reliability of contact and finger contact.
The contact finger pressure is proportional to the primary insertion depth of the contact, the sensitivity is low, the contact insertion area is long, the on-site debugging is difficult, and the product is highly reliable against adverse interference such as harsh environment (winding of the flexible wire)
We offer the most advanced engineering design solutions and product technology solutions to global power customers, and continue to create value for the commercial success of global power customers.
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