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Drop out surge arrestors are MOV based devices that are designed to protect against the damaging effects of spikes and transients caused by lightning, utility switching, isolation arching, electrical motor cycling, or any other sudden change in the electrical power flow on incoming AC power lines. Lightning damage, is responsible for a large percentage of over-voltage occurrences, these are either direct strikes to a line or induced voltages onto the line. (strikes within 40m of a line).
Drop out surge arrestors prevent flashover between phases, prevent damage to poles and protect transformers from lightning damage and surges. Live Line Arrestors can be intelligently placed on lines in problem areas where equipment is consistently damaged.
The placing of Drop out surge arrestors has proven to be more cost effective than improving the insulation of poor performing lines. A spent Drop out surge arrestor can be exchanged for a new unit within minutes with the aid of a link stick and with the system energized. This eliminates unnecessary outages and lost revenue for the electrical utility.
The VersaRupter uses a puffer and nozzle system to quickly and efficiently extinguish the arc of full-load interruptions. The rated voltage – 4.76-38 kV, normal rated current: 200-1200 A.
The VersaRupter is a very compact switch allowing upright and inverted mounting, with front, left or right side operation. VersaRupter is available with a choice of manual direct or chain-drive manual open/close operation, motorized closing, shunt trip and two-step grounding options. Current-limiting fuse mountings are also available.
IEC/ANSI indoor vacuum circuit breaker Vmax
Medium Voltage circuit breaker with mechanical actuator (spring mechanism) for primary distribution, up to 17.5 kV, 2000 A, 31.5 kA.
Vmax breakers are used in electrical distribution for control and protection of cables, overhead lines, transformer and distribution substations, motors, and transformers.
The Vmax breaker family is available for IEC and ANSI applications:
ABB enclosed switch fused isolators are rated at IP65 and are supplied with fuses. Available in either triple pole and neutral or four pole versions, please choose current rating and pole type from the product options.
- Current ratings from 25A to 630A
- Triple pole and neutral (TP&N)
- IP65 rated (not recommended for external installation)
- Powder coated textured finish (RAL 7035)
- All switches are supplied with fuses and removable gland plates.
- All 3 pole switches include detachable neutral link.
- Hinged lid complete wih lock.
- Pad-lockable black pistol grip handle as standard.
- Manufacturer: ABB