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G3300 Voltage Relay (three phase)
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More Info
Low cost and high flexibility
Three phase Over or Under Voltage
Monitors phase failure & symmetry
Covers 63 to 690 VAC
Programmable scales
Programmable relay functions (NE/ND)
Microprocessor based
Optional Configuration by PC
The SELCO G-Line relays are mainly intended for use in
land-based applications. The SELCO G-Line relays
provides an efficient solution for applications where
flexibility and cost of purchase are the main issues.
Despite a low purchase price, SELCO G-Line relays provide
high quality, proper measuring techniques and a vast
number of programmable options.
Safety, accuracy and repeatability are important features
in any protection system. SELCO G-Line relays all have
built-in measuring transformers, one for each phase measurement. Transformers provide the best
possible isolation with near perfect linearity and thereby no loss of accuracy. Voltages and currents can
be measured through resistors or optical couplers, which provide a much cheaper design. Such schemes
however, compromise safety as well as accuracy.
A revolutionary measuring scheme enables the SELCO G-Line relays to operate at any voltage in the
range 63 to 690 VAC, thus one relay covers any medium voltage application. The SELCO G-Line relays
work with Line-Line as well as Line-Neutral systems.
The reference for the trip level is easily set by briefly pushing a PRESET button. Configuration and setup
is extremely simple. Trip levels, hysteresis and delay are easily set by turning the dials located at the
front plate.
The microprocessor based design provides superb flexibility. An optional programming kit connects the
SELCO G-Line relays to the RS232-port of a standard PC, thus enabling the user to reprogram reaction
parameter, scales, relay behavior, reset function etc. The programming kit allows the user to
completely customize the function of the relay.
The SELCO G3300 Voltage Relay is delivered as a three phase Over Voltage relay; however it can easily
be reprogrammed to operate as a three phase under voltage relay. The G3300 will trip on the highest
(or lowest) of the three voltages - measured between phases, or between phases and nautral. The
G3300 has two built-in relays, the pick-up relay activates once the trip level is passed, while the trip
relay activates after the level has been passed continuously during the time of the Delay. The trip relay
can be reset automatically by the level falling back beneath the hysteresis, or by an external reset
signal.
The Phase OK LED located on the front plate will indicated phase failure as well as missing phase
symmetry. The pick-up relay can be reprogrammed to operated in accordance with the Phase OK LED.
The SELCO G-Line relays are for DIN rail mounting, or fixation by two 3/16” screws.
List product variants
This product is complementary to the following products:
- G0100 G-Line Programming Kit
- G2000 Power Relay
- G2200 Current Relay
- G3000 Frequency Relay (under & over)
- G3100 Voltage Relay
- G3600 Voltage Relay (under & over)
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SELCO - Meterbuen 6-12 - DK-2740 Skovlunde - Pho: +45 70 26 11 22 - Fax: +45 70 26 25 22
http://www.selco.com/products_show.asp?id=75
16.09.2004
[ SELCO ] - Products
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http://www.selco.com/products_show.asp?id=75
16.09.2004