Page 278 - V16 Catalogue Final

MAINS PROTECTION

WHY USE MAINS PROTECTION?

With an increase in decentralised energy sources such as Diesel Generator Sets, Photovoltaic plants and other alternative sources, the distribution
system becomes less stable. It becomes more common to see fluctuations in frequency, voltage and other parameters. To minimise the impact and
disturbances to the electrical network it is essential that all Energy sources over a certain size (in most of Australia over 30kW) have mains protection.

When making an application to connect (if your system is above 30kW three phases or 10kW single phase) the Distribution Network Service Provider
(DNSP) will insist on secondary protection to be provided. This will be in addition to the in built protection offered by AS4777 compliant inverters.
They will insist that the protection relay shall be certified to IEC 60255, G59 or other poduct standards.

THE BENEFITS TO YOUR CLIENT:

1. Compliance to local regulation.
2. Compliance with technical conditions of DNSP.
3. Prevents damage to the generator/Photovoltaic system caused by grid
disturbances.
4. Minimise damage to equipment as a result of power being source
outsided of parameters.
5. Reduction of downtime due to disconnection or interruption.

THE BENEFITS TO YOUR DNSP:

1. Provides safe working conditions for network workers upon grid
disconnection.
2. Ensures safe balanced network of the distribution system.
3. Guarantees reliable delivery of high quality electricity.
4. Enables remote control of power supply sources.

WHY ARE PROTECTION RELAYS IMPORTANT?

- Protect the generating units from mains disturbances.
- Disconnect the generator from the grid as soon as a
failure is detected.
- Prevent distribution network from failure.
- Maintain the quality of power delivered to all users.

270 V16-PV-R04 www.ipd.com.au Phone: 1300 556 601