AC Switchgear (Outdoor)
Horizon & Horizon Compact
The Horizon fills the market need for outdoor, ground-mounted circuit breakers and features the award-winning magnetic actuator.
Overview
Featuring the most advanced operating mechanism available on the market today, the Horizon offers unrivalled reliability, protection and environmental endurance for outdoor circuit breakers.
Designed for 15.5kV, 27kV or 38kV applications, the Horizon can be used with other products from BRUSH Switchgear to provide cost-effective and compact substations or breathe new life into existing substations by replacing old and obsolete equipment.
Key benefits
Resources
ENGINEERING FOCUS
Unique features
Current transformers are located within the bushing design, external to the gas enclosure, to allow for easy changing/addition.
Mechanical ON/OFF position indication visible through clear viewing window from ground level.
The magnetic actuator is based on a solenoid plunger, held in the tripped or closed position by a permanent magnet.
Technical specification
| Property | Rating | Rating | Rating |
|---|---|---|---|
| Maximum System Voltage | 15.5kV | 27kV | 38kV |
| Continuous Current | 1250A | 1250A | 1250A/2000A |
| Interrupting Current | 25kA | 25kA | 25kA/31.5kA |
| Rated Operating Sequence | O – 0.3sec – CO – 15sec – CO | O – 0.3sec – CO – 15sec – CO | O – 0.3sec – CO – 15sec – CO |
| Impulse Voltage Withstand | 95kV | 125kV | 170kV/200kV |
| Power Frequency Withstand Dry | 1min 28kV | 1min 50kV | 1min 80kV |
| Power Frequency Withstand Wet | 10secs 80kV | 10secs 80kV | 10secs 80kV |
| Control Voltage | 110V dc | 110V dc | 110/125V dc (48 & 220 Optional) |
| Rated Frequency | 50/60Hz | 50/60Hz | 50/60Hz |
| Rated 3 sec Short-Time Current | 25kA | 25kA | 25kA/31.5kA |
| Rated Peak Making Current | 65kA | 65kA | 65kA/82kA |
| Ambient Air Temperature | -50˚C to +50˚C | -50˚C to +50˚C | -50˚C to +50˚C |
| Weight | 294kg | 294kg | 800kg |
Applications
Switchgear services
From initial system analysis, to design, engineering, supply, installation, commissioning and upgrades of equipment through to repurposing or decommissioning. We provide lifecycle management and support.
CONTACT US
Speak to our team
BRUSH has a global reputation for service excellence and dedicated customer support. With a wealth of experience spanning almost 150 years and significant in-house knowledge and expertise, our commitment to excellence is backed by experience and knowledge.
Whether it’s the provision of parts, the delivery of service support in the field, at the customer’s premises or at our network of service workshops, our team of highly experienced engineers are on hand to support.