APS PRODUCT SUMMARY
- MV & HV Statcoms (Static VAR/ PFC/ Harmonic Compensators)
- LV and MV Series Capacitors
- MV Ring Main Units (RMU) (SF6 Free available)
- MV Auto Reclosers
- Outdoor MV Circuit Breakers and Break Switches
- MV & HV Surge Arrestors (SPD’s)
- Metal Enclosures for indoor and outdoor applications (customised sheet metal fabrication)
THE ELECTRICITY NETWORK
APS PROVIDE SOLUTIONS IN ALL 3 CATEGORIES OF NETWORK
MAP OF A TYPICAL HIGH VOLTAGE GRID
APS ELECTRICITY NETWORK SOLUTIONS
WHERE DOES EACH SOLUTION FIT?
Auto Recloser
Auto Recloser or automatic circuit recloser is recognized by electric utilities throughout the world as an essential device for achieving their primary goal of providing maximum continuity of electric service to their customers simply and economically. Reclosers sense and interrupt fault currents and automatically restore service after a momentary outage. An Auto Recloser is an automatic medium voltage electric switch which is designed for use on overhead electricity distribution networks to detect and interrupt momentary faults. It shuts off electric power when a fault occurs, such as a short circuit. Where a household circuit breaker remains shut off until it is manually reset, a recloser automatically tests the electrical line to determine whether the fault has been removed. If the problem was only temporary, the recloser automatically resets itself and restores the electric power.
On high-voltage electric lines, 80 to 90 percent of fault occurrences are temporary –such as lightning, wind blown tree branches or wires, birds, or rodents, and by their very nature, remove themselves from the electric line if the power is shut off before permanent damage occurs to the lines. The recloser senses when such issues occur and automatically shuts off the power. An instant later (the length of time may be noticeable only as a lightbulb flicker), the recloser turns the power back on, but if the trouble is still present, it shuts it off again. If the issue is still present after three such activations, the recloser is programmed to consider the problem permanent and it remains off. A power company crew must then repair the problem on the line and reset the recloser to restore power.
The examples of permanent problems include power lines or other equipment damaged by lightning strikes, fallen tree limbs, or vehicle crashes. Reclosers save the electric companies considerable time and expense, since they permit power to be restored automatically, after only a flicker or two. And, for outages that require a repair crew, reclosers minimize the outage area and help the crews to quickly locate the problem and restore power. Consumers of electricity such as residential, business, industrial, and institutional are saved from the expense and inconvenience frequent power outages would cause.
The auto recloser complies with IEEE/ANSI C37.60 or IEC62271-111 standards
WHERE DOES EACH SOLUTION FIT?
SURGE ARRESTORS
Ratings:0.22~500KV (porcelain),0.22~220KV(composite)
Application: Protection of power transmission & distribution system from over-voltage.
Features: Silicone polymer housing composite metal oxide surge arrester and porcelain housing metal Oxide surge arresters. Easy installation and low maintenance. Good sealing capability to ensure reliable operation. Products strictly follow GB, IEC, IEEE and other standards. Good stain resistance. Offers excellent nonlinear volt-ampere characteristics. Simple structure, no gap, small size and light weight. Fast action response and good protection performance. Large flow capacity. No follow-through, able to withstand multiple lightning overvoltage’s or operating overvoltage’s.
Has passed KEMA, CEPRI, XIHARI and other test reports
WHERE DOES EACH SOLUTION FIT?
BREAK SWITCH
An “MV break switch” refers to a “Medium Voltage Load Break Switch” (LBS), which is an electrical switch designed to safely open and close an electrical circuit while it is under load, typically used in medium voltage power distribution systems with voltage levels ranging from 1kV to 36kV; essentially allowing for controlled isolation of a circuit while power is flowing through it.
Key points about MV break switches:
Function: Unlike a simple disconnect switch, an MV break switch can interrupt current flow under load conditions, making it suitable for isolating sections of a network while power is still active.
Application: Commonly used in electrical distribution systems, particularly in ring main units (RMUs) to section off parts of the network for maintenance or fault isolation.
Mechanism: Can utilize various arc extinguishing methods like air-break or vacuum technology to safely interrupt the current when opening the circuit.
WHERE DOES EACH SOLUTION FIT?
RING MAIN UNIT
APS-RM RMU units are designed for supplying sustainable energy, protecting electrical equipment in secondary distribution networks up to 36 kV. APS-RM units are the best solution for indoor/outdoor distribution substations and with their compact design; they suit various network applications such as transformer substations, wind power plants, industrial zones, etc. Namely, APS -RM SF6 gas insulated units offer the following;
1- Compact design up to 36kV; KEMA type tested
2- Switching units sealed in SF6 gas filled stainless steel tank
3- High level operator safety and operating reliability
4- With embedded cable testing compartment, easy and safe cable testing without cable connection removal
5- High quality tank welding, leakage rate of less than 0.1% per year
6- Maintenance free unit offering life expectation of over 30 years
7- Smart interlocking with padlocking system for maximum operator safety
8- Different feeder combinations with switch disconnector and vacuum circuit breaker
9- Suitable with SCADA systems for remote control and monitoring 10- Motorized options for circuit breakers and switches 11- High resistance to pollution and humidity
WHERE DOES EACH SOLUTION FIT?
DISTRIBUTION CAPACITORS
The APS medium-voltage series capacitor for power distribution network is mainly used to improve the terminal voltage of long-distance power distribution lines (11kV, 33kV, 66kV and others) and improve the power quality of industrial sites and residential areas.
Medium-voltage series capacitors are mainly used for long-distance medium-voltage power distribution lines. For example, in 36kV and 11kV power distribution networks, due to the small power load and far dispersion in remote areas, the length of power distribution line is far beyond the conventional power transmission radius. At this time, the gradual drops of terminal voltage in the power distribution line will result in the abnormal operation of residential power consumption and industrial and mining loads. In this case, the conventional parallel capacitor compensation (column capacitor) or voltage-regulating transformer (1:1 adjustable voltage transformer) cannot fundamentally solve the problem, and the compensation effect will deteriorate sharply with the increase of electrical load at the terminal. Medium-voltage series capacitor can completely solve the above-mentioned problems, shorten the equivalent electrical distance, and effectively improve the terminal voltage of the line.
WHERE DOES EACH SOLUTION FIT?
STATCOM
