G59/2 protection is required when a grid connecting embedded generation scheme is installed in the UK to protect against:
AC Voltage change
Frequency change
Vector shift / ROCOF
On systems in excess of 16Amps per phase G59/2 regulations apply for all UK installations.
The G59/2 protection is provided fully equipped with an internally mounted G59 relay complete with LCD display screen, manual reset button, last trip record & sealable locking facility.
The G59 relay will automatically disconnect the embedded generator from the DNO grid source upon a mains fault by use of a single or three phase or.
The is supplied with a door interlocked (padlockable) isolator switch for additional protection & enables the to manually disconnect the embedded generator.
A green indicator lamp “connected” is fitted on the door to give quick indication to the that the DNO grid source is connected
Control circuits and relay voltage inputs are fitted with single pole miniature circuit breakers
The G59 relay is of the programmable type with functions to protect against: o
Under & over voltage 230v single phase or 400v three phase (ANSI 27/59)
o
Under & over frequency 50Hz (ANSI 81L/H)
o
Vector shift (ANSI 78)
o
ROCOF (ANSI 81R)
o
Voltage asymmetry (ANSI 47) Positive sequence under voltage Negative sequence over voltage Phase sequence supervision
o
Under & over voltage / frequency has two stage settings to cover short term all well as long term disturbances as defined in G59/2 regulations
o
Adjustable time delay for automatic fault reset (if required)
o
Vector shift & ROCOF protection are selectable to give a best fit for a secure site
o
Five relay outputs can be configured & wired to terminals (at extra cost) to enable a wide range of signalling & trip methods
When ordering please confirm if 1- phase or 3- phase system & Kw rating required. The G59/2 can be used on any type of embedded generator system such as diesel engine / alternator, wind turbine, solar PV or water turbine.
List price (ex works) £ 1220.00 for either single phase 230v (max 14kW / 60A) or three phase 400v (max 30kW / 45A) larger current ratings are available for prices please the office.
G59 protection relay
Control protection
Volt free s
Main Isolator
Main or
We can also provide specialist on site G59/2 testing service throughout the UK. Please the office for a quotation.
Control & Power Systems Ltd 3D Burniston Industrial Estate Burniston Scarborough North Yorkshire England YO13 0HG Tel: +44 (0)1723 871112 Email:
[email protected] Web: www.controlandpower.co.uk Features & specifications are subject to change without prior notification