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GPFQ Datasheet(PDF) 1 Page - Tyco Electronics |
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GPFQ Datasheet(HTML) 1 Page - Tyco Electronics |
1 / 4 page 917 AGASTAT Dimensions are shown for reference purposes only. Dimensions are in inches over (millimeters) unless otherwise specified. Catalog 1308242 Issued 3-03 Specifications and availability subject to change. www.tycoelectronics.com Technical support: Refer to inside back cover. This diagram illustrates amplification obtained by the articulated operating mechanism. SERIES GP SERIES TR GP/ML/TR series 10 Amp Control Relay Non-latching, Latching & Timing Versions File E15631 File LR29186 Users should thoroughly review the technical data before selecting a product part number. It is recommended that users also seek out the pertinent approvals files of the agencies/laboratories and review them to ensure the product meets the requirements for a given application. GP/ML/TR Design Features Among the advances AGASTAT control relays offer over existing designs is a unique contact operating mechanism. An articulated arm assembly amplifies the movement of the solenoid core, allowing the use of a short stroke coil to produce an extremely wide contact gap. The long support arms used in conventional relays are eliminated. Both current capacity and shock/vibration tolerance are greatly increased, as well as life expectancy. Design/Construction AGASTAT control relays are operated by a moving core electromagnet whose main gap is at the center of the coil. A shoe is fitted to the core which overlaps the yoke and further increases the magnetic attraction. The coil itself is in the form of an elongated cylinder, which provides a low mean turn length and also assists heat dissipation. Since the maximum travel of the electromagnet does not provide optimum contacts movement, an ingenious amplifying device has been designed. This consists of a W-shaped mechanism, shown in figure 1. When the center of the W is moved vertically the lower extremities move closer to each other as can be seen in the illustration. The center of the W mecha- nism is connected to the moving core of the electromagnet and the two lower points are connected to the moving contacts. Two of these mechanisms are placed side-by-side to actuate the four contacts sets of the relay. The outer arms of the W mechanisms are leaf springs, manufactured from a flat piece of non-ferrous metal. These outer arms act as return springs for their corresponding contacts. This provides each contact with its own separate return spring, making the contacts independent. The mechanical amplification of the motion of the electromagnet permits a greater distance between the contacts, while the high efficiency of the electromagnet provides a nominal contact force in excess of 100 grams on the normally open contacts. All the contacts are positioned well away from the cover and are well ventilated and separated from each other by insulating walls. The absence of metal-to-metal friction, the symmetrical design of the contact arrangement and the lack of heavy impacts provides a mechanical life of 100,000,000 operations. For use in AC circuits, the relay is supplied with a built-in rectification circuit, thus retaining the high DC efficiency of the electromagnet. The current peak on energizing is also eliminated and consequently the relay can operate with a resistance in series (e.g. for high voltages or for drop- out by shorting the coil). The use of the rectification circuit offers still other advantages. The same model can operated at frequencies ranging from 40 to 400 cycles. Operation of the relay is crisp; even with a low AC voltage, there is a complete absence of hum and vibration. The plastic dust cover has two windows through which the iron yoke protrudes to facilitate cooling and also to allow direct mounting arrangement of the relay irrespective of the terminals. Figure 1 – Illustration of Amplification Features • Occupies very small panel space • May be mounted singly, in continuous rows or in groups. • Available with screw terminal molded socket. • 4 SPDT contacts. • Magnetic blowout device option increases DC current carrying ability approximately ten times for both N.O. and N.C. contacts. In both AC and DC operation, the addition of the device will normally double the contact life, due to reduced arcing. GP/ML Contact Data @ 25°C Arrangements: 4 Form C (4PDT) Material: Siver plated. Ratings: See chart. Expected Life: Mechanical: 100 million operations. Electrical: See chart and graph. Contact Ratings and Expected Life Power Factor Number of Current or Electrical Voltage (Amps) Time Constant Operations Remarks 540 VAC 3 COS Ø = 0.5 15,000 2 contacts in series 380 VAC 15 Resistive 10,000 2 contacts in parallel 380 VAC 10 Resistive 200,000 380 VAC 3 x 3.3 COS Ø = 0.8 200,000 3hp motor 220 VAC 20 Resistive 20,000 2 contacts in parallel 220 VAC 15 COS Ø = 0.5 20,000 2 contacts in parallel 220 VAC 10 Resistive 400,000 220 VAC 3 x 6 COS Ø = 0.8 200,000 3hp motor 220 VAC 5 1,500,000 Filament lamps 220 VAC 5 Resistive 3,000,000 220 VAC 2.5 COS Ø = 0.25 2,000,000 220 VAC 2 Resistive 15,000,000 220 VAC 1.25 Resistive 30,000,000 120 VDC 1.5 Resistive 20,000,000 with blow-out device 48 VDC 10 Resistive 1,000,000 Load Life Curve NOTE: Seismic & radiation tested EGP, EML and ETR models are available. Consult factory for detailed information. |
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