AC protection systems

17 August 2011 Circuit & System Protection

Clearline’s single- and three-phase trip-connect lightning and surge protection units with programmable delay are used to protect any electrical installation from damage due to lightning or large fluctuations in supply voltages.

When the supply voltage is too low or too high, the unit will disconnect power to the downstream equipment, and will then automatically restore power after a preset delay when the supply returns to acceptable levels. Various modules are available for loads up to 115 A and the units are supplied with internal contactors up to 65 A.

The units perform cycle by cycle RMS voltage measurements, providing protection against over- and under-voltage conditions. They incorporate similar technology and designs to that of an automatic voltage regulator. These devices are installed between the incoming supply and the distribution board or equipment. Typically these protection systems are suitable for domestic, commercial and industrial applications.

The three-phase tripconnect system is particularly useful when protecting large equipment such as motors, pumps, refrigeration and air conditioning systems.

For more information contact Brian Mostert, Clearline, +27 (0)11 848 1100, [email protected], www.clearline.co.za

Further reading:

EMC limits and levels
Altron Arrow Editor's Choice Circuit & System Protection
As soon as electronics and electrical systems started interfering with each other, the world had to come to some consensus. Considering physics is universal and does not care about what country electrical/electronic products are used in, it should be the same everywhere, right? It is nearly there, but not quite.

Read more...

---

Clearing the Static: The importance of cleaning in ESD control
Circuit & System Protection
The proper cleaning of ESD-safe areas and equipment such as workstations, floors, mats, trays, and tools using specialised antistatic cleaners is vital to prevent ESD damage.

Read more...

---

Safety relay for explosive areas
IOT Electronics Circuit & System Protection
Phoenix Contact has expanded its safety portfolio with the new PSR-MC35-EXI safety relay module, specifically engineered for use in potentially explosive environments.

Read more...

---

Clearing the Static: Ensuring effective ESD control
Actum Circuit & System Protection
To maintain reliable electrostatic discharge control, regular testing and accurate measurement are essential, with grounding products and ESD testing equipment being vital.

Read more...

---

Clearing the Static: The importance of ESD audits
Actum Circuit & System Protection
An ESD audit is the first step in establishing an effective static control programme in the workplace, and will help identify vulnerable areas and potentially hazardous static zones that require improvement.

Read more...

---

EMI shielding materials application guide
Circuit & System Protection
TE Connectivity’s shielding solutions include electrically conductive elastomers, gaskets, knitted wire mesh, oriented wire, EMI shielding ventilation panels, shielded window, cable shielding and shielding components.

Read more...

---

Clearing the Static: ESD containers and packaging
Actum Circuit & System Protection
         Vacuum forming ESD Electronic components can be damaged by electrostatic discharges. To protect against such damage, electronic assembly parts are often transported or stored in vacuum formed component ...

Read more...

---

Electrostatic discharge chairs
Actum Circuit & System Protection
An ESD chair forms an integral part of grounding within the electrostatic discharge protected area to prevent potential damage to products.

Read more...

---

Conductive ESD footwear
Actum Circuit & System Protection
Conductive ESD footwear is used in conjunction with other grounding devices, such as a wrist strap, cord, and ESD surface mats, to provide a continuous path to ground.

Read more...

---

Clearing the Static: The importance of cleaning in ESD control
Actum Circuit & System Protection
To prevent Electrostatic Discharge (ESD) damage to sensitive electronic assemblies and components, all production, handling, packaging, and storage must take place in an ESD-protected environment.

Read more...

---