Surge arrestors for DC photovoltaic applications

March 2012 Electrical Power & Protection

The rapidly growing PV industry has placed exceptional demands on the available SPD products intended to protect systems components such as inverters, arrays, or combiner box components from the effects of lightning-caused surges and transients.

Responding to this demand, Dehn has introduced new products specifically designed to function under this DC voltage environment. The new DEHNguard M YPV and PV-SCI incorporate a switched fused circuit in parallel to the MOV discharge circuit, permitting arc free disconnection.

Dehn has recently expanded its initial product offering to include a broader range of voltages and product configuration. These unique SPD products are now available for 150, 600, 1000, 1200 and 1500 VDC applications and configured in both a three-pole configuration for floating systems and a two-pole design for grounded systems.

For more information contact Paul van As, Surgetek, +27 (0)11 792 1303, [email protected], www.surgetek.co.za

Further reading:

Boiler selection for optimal thermal energy performance
Electrical Power & Protection
The changing world of boilers means companies wishing to improve their thermal energy efficiencies while containing costs and environmental impacts must make careful and informed decisions. AES’s rich pool of experience, ability to keep pace with new steam trends and technologies, and understanding of their clients’ production processes can assist clients to weigh up different options in a careful and informed manner.

Read more...

---

Securing Africa’s energy future starts at home
ACTOM Electrical Machines Electrical Power & Protection
Africa’s energy demands are surging, but the current reliance on imported solar technology leaves the continent vulnerable. This is why the prospect of building inverters and lithium batteries locally, designed for South Africa’s specific needs, is so promising.

Read more...

---

Dry-type transformers for Dutch intake substation
Electrical Power & Protection
A data centre in the Netherlands is the site of a recent innovation on the transformer landscape, where TMC Transformers has designed, manufactured and installed dry-type transformers in a large intake substation.

Read more...

---

Generators: The muscle in the new energy mix
WEG Africa Electrical Power & Protection
Contrary to their reputation as noisy and dirty, generators are a key part of modern energy supplies. Generators are reliable electricity workhorses in times of need. But they are also becoming welcome additions to modern energy mixes through efficiency improvements, noise reduction and flexible design choices.

Read more...

---

Doubling down on sustainability commitments: six practical solutions to meet the AI challenge
Schneider Electric South Africa Electrical Power & Protection
The best time to plant a tree, the old saying goes, was 20 years ago, and the second-best time is today. The same concept holds true to sustainability in the data centre industry.

Read more...

---

Condition-based maintenance can revolutionise business continuity
Schneider Electric South Africa Electrical Power & Protection
As businesses experience growing pressure to enhance operational efficiency and reduce downtime due to electrical failure, condition-based maintenance becomes essential for preventing unforeseen equipment breakdowns by assessing the real-time health of electrical systems.

Read more...

---

Ball valves and actuators to optimise HVAC performance
Schneider Electric South Africa Electrical Power & Protection
Schneider Electric South Africa offers the full range of innovative SpaceLogic and EasyLogic ball valves and actuators. These cutting-edge products are designed to optimise HVAC system performance, ensuring comfort and energy efficiency in industrial, commercial and residential buildings.

Read more...

---

Power over Internet splitter for reliable power distribution
Vepac Electronics Electrical Power & Protection
A manufacturing facility requires a stable power supply for its wireless access points mounted across the factory floor. However, these devices do not support direct PoE input. By deploying the IPS-342P PoE Splitter from Vepac, the facility can efficiently convert PoE power from the network switch into 24 V DC output.

Read more...

---

World’s fastest 16-bit arbitrary waveform generator
Vepac Electronics Electrical Power & Protection
The ARB Rider AWG-5000 is the world’s fastest 16 bit Arbitrary Waveform Generator, with 6,16 GS/s real time update rate (12,32 GS/s in RF mode) and 16 bit vertical resolution.

Read more...

---

Wireless test tools
Comtest Electrical Power & Protection
Fluke has on offer the Fluke 376 FC True-RMS Clamp Meter with iFlex, the most advanced troubleshooting tool for industrial and commercial electricians

Read more...

---