Vacuum Interrupters & Visible Disconnect
- Fixed mounted vacuum circuit breakers, installed on rollers. Rollers are provided to simplify the field removal of the circuit breakers.
- Integral manual charging handle.
- High-speed operation – complete fault clearing in less than 3 cycles.
- Hermetically sealed vacuum interrupters protect contacts from corroding elements and contamination.
- Copper chrome contacts provide superior dielectric strength.
- Easy maintenance with contact wear indicator is provided on the vacuum interrupter moving stem.
- Periodic visual inspection recommended.
- Inline visible air-disconnect switch, pad-lockable in open and/or closed position, to ensure personnel safety during power system service, maintenance, and repairs.
- Symmetrical Interrupting Capacity at 2.4kV-15kV
- 12kA, 25kA, 31.5kA, 40kA, 50kA
Power Solution Information
The APT Front Access Switchgear is a Compact Medium Voltage (2.4kV – 15kV) air insulated SF6-free Switchgear that utilizes state-of-the-art innovative switchgear design methods and technology. This allows for a smaller and lighter design that offers the peace of mind of visual assurance of full disconnection through the main bus connection window. This makes the FAC-Series the safest Medium Voltage Switchgear on the market. With each section’s small footprint (26″W x 38.5″D x 80″H), it will fit in places traditional sized switchgear cannot. It’s also easy to install on-site, reducing assembly time.
Product Features
- Space saving Front Access Only design can be placed against the back wall.
- Smallest footprint 15 kV air insulated switchgear on the market, each section is only 38.5” deep and 26” wide.
- Increased operator safety:
o Remote controllable design.
o Completely metal enclosed dead front.
o Provision for connection of field grounding cables.
o Removable metal panel for viewing blades position of the visible disconnect air insulated switch (through Lexan protected viewing window). - Complete front access to all the components, bus and bolted joints.
- Easy to maintain & environmentally friendly:
o 100% air insulated, no SF6 gas used. - Modular, slideout design of the major power switching components to minimize the downtime, should component replacement or repair be needed.
- Lower cost of installation: Insulating barriers provided between the phases, no need to tape or boot field cable terminations.
- All bus is manufactured from silver plated copper.
- Symmetrical Bracing Capactiy of 2.4kV-15kV
- 25kA, 31.5kA, 40kA, 50kA, 100kA
- Symmetrical Bracing Capactiy of 2.4kV-15kV
- Protective Relaying Applications:
- Utility Intertie & Paralleling Protection
- Advanced Generator Protection
- Tie Protection
- Transformer Protection
- Feeder Protection
- Various Differential Protection Schemes
- Typical Relaying Functions:
- 25 – Synch Check
- 32 – Reverse Power
- 50/51 – Inst./Time Overcurrent
- 50N/51N – Inst./Time Ground Overcurrent
- 27/59 – Under/Overvoltage
- 59N – Ground Overvoltage
- 81U/81O – Under/Overfrequency
- 40 – Loss of Excitation
- 60 – Current Balance
- 67 – Directional Overcurrent
- 86 – (LO) Lock-Out Relay (Knob Grip)
- 87 – Differential Protective Relay
- 87B – Bus Differential
- 87G – Generator Differential
- Pistol Grip Circuit Breaker Control Switches provide a red and green target to indicate circuit breaker position status.
- Test Switches provide a safe, simple, fast and reliable method to isolate, test, and service installed equipment without disturbing the power system.
- Allows for quick and easy multi-circuit testing by conventional test methods.
- Test Plugs enable easier measurement, calibration, verification and maintenance of relays, meters, PTs, & CTs.
- Conveniently connects devices measuring the currents and voltages being applied to the relays, meters, PTs, & CTs without interrupting or short-circuiting the circuit.
- Voltage Transformers (PTs) and Current Transformers (CTs) contain auxiliary drawers that accomodate fuses, control power transformers, or voltage transformers.
- Secondary Self-aligning Contacts accommodate up to six independent circuits.
- For operator safety these devices are automatically grounded during movement to disconnected position.
- PTs Available in Wye or Open Delta Voltage Sensing Configurations.
- CTs for Relaying/Power Sensing, Differential, or Ground Fault sensing available in standard or Revenue Grade Metering Accuracy.
