Relays for solar systems
16 March 2011
Switches, Relays & Keypads
Fujitsu Components’ product range includes power relays designed for use in solar energy systems. They have two target functions within the solar converter: DC relays to switch on/off the DC voltage generated by the solar panel; and AC relays with big contact gap, to switch on/off the provision of the generated electricity to the power grid.
The FTR-J2 is a DC relay capable of switching 450 V d.c. at 10 A, and measures 24 x 23,5 x 27 mm (L x W x H). To be able to switch high DC voltages in these small dimensions, Fujitsu has designed two strong permanent magnets into the relay, which are necessary to extinguish the severe breaking arc. The FTR-J2 is a 2 Form A relay that can be used in two different configurations: switching 2 x 200 V d.c. or switching 1 x 450 V d.c. It can handle an inrush current of 150 A (capacitive load) and offers high insulation between contacts and coil with an insulation distance of clearance/ creepage > 6 mm, a dielectric strength of 4000 V a.c. and 10 000 V surge strength.
Additionally, Fujitsu has expanded its FTR-K3 series with two latching versions suitable for solar energy systems. The FTR-K3L-PV is available as a dual coil latching version offering 32 A contact current and a contact gap of 1,5 mm. The FTR-K3L-WG is also a dual coil latching relay with a 1,5 mm contact gap, and features a contact rating of 25 A/250 V a.c. and can handle a carry current of 30 A.
Further reading:
LED indicators
Brabek
Switches, Relays & Keypads
The Dual Icon series from APEM is an LED indicator that presents two distinct visual signals within a single unit.
Read more...
Reed relay upgraded to 200 W
Switches, Relays & Keypads
Engineers gain 200 W switching power in Pickering’s Series 68 HV relays with flying leads, ideal for demanding test, medical, and energy applications.
Read more...
Industrial hand controller
Brabek
Switches, Relays & Keypads
The HC Series hand controller from APEM is a pre-qualified solution for use in demanding industrial environments.
Read more...
Customisable high-voltage reed relay
Switches, Relays & Keypads
Pickering Electronics has introduced its Series 600 relays, the company’s most customisable range of high voltage reed relays to date.
Read more...
Stainless steel panel switch
Brabek
Switches, Relays & Keypads
The new cap has a stainless-steel front offering an aesthetic look and provides excellent halo illumination.
Read more...
Tuning knobs in modern designs
Phoenix Contact
Switches, Relays & Keypads
Teaser: OKW’s latest tuning knobs, include optional LED illumination, flush-fitting installation, and a main body which is slightly inclined towards the internal axis.
Read more...
High-voltage isolation reed relay
Switches, Relays & Keypads
Pickering recently announced its new and improved Series 104 high-voltage isolation reed relays which are designed to stand-off up to 5000 V
Read more...
Compact switching joystick
Brabek
Switches, Relays & Keypads
The MHS Series from Ruffy Controls is a momentary four-way or eight-way switching joystick with an optional pushbutton validation feature.
Read more...
Schlegel switches available from TME
Switches, Relays & Keypads
The range of Schlegel products available at TME comprises contact blocks, compatible switches, and accessories.
Read more...
Miniature SIP reed relay with 5 kV stand-off capability
Switches, Relays & Keypads
Pickering Electronics has added a 5 kV stand-off, up to 1,5 kV switching version to its single-in-line Series 104 reed relay family.
Read more...
printer friendly version