Document opqRGjw3gyq24E8NomVm61wo

A Versatile Overload Relay . . . Bulletin 810 Magnetic Overload Relays Bulletin At A Price Sheet 01U 120 Ampere Bulletin 810 -- Automatic Reset -- HO Contacts -- SJofe Mounting CHARACTERISTICS Non-Thermal Quick Reset J Inverse Time Limit 60 Ampere Bulletin 810 * Automatic Reset -- NC Con tacts--Metal Panel Mounting FEATURES Adjustable Operating Current Adjustable Operating Time NC or NO Contacts Automatic or Hand Reset Open or Nema 1 Enclosed Application The Bulletin 810 magnetic overload relay is adaptable to various special applications involving both AC and DC motors. Like thermal relays, it has inverse time tripping characteristics; unlike thermal relays, its minimum oper ating current is independent of temperature changes or cumulative heating. The Bulletin 810 may be used in sit uations where ambient temperature variations would hamper thermal relays. Because it is non-thermal, there is no "cooling off" period after an overload operates the relay. The reset action is quick and positive, a definite advantage when shutdowns must be as short as possible. The Bulletin 810 features an adjustable operating cur rent. The range of adjustment is continuous, with limits of 100% and approximately 200% of the minimum setting. Adjustment is done without tools, without accessory parts. The operating time, as well os the current, is adjustable. The relay may be set to operate almost instantly under locked rotor conditions; on the other hand, it may be ad justed to provide an operating time comparable to thermal relays. The Bulletin 810 is remarkably versatile, as the Tripping Curves on page three indicate. Supersedes Bulletin Price Sheet 810 Dated October 26, 1959 Ratings and Prices 600 Volts Max. AC or DC e 60 Cycles Max. AH relays listed below have NC contacts and an automatic reset. Add $2.50 Git per relay it a NC hand reset relay is desired. Contact*--Relays are available with NO contacts at no extra charge. Ratings, NC L NO: AC- 6A @ 110V, 3 @ 220. 1.3 @ 440, 1.2 @ 350 DC--.4a @ 115V, .2 @ 230, .1 @ 440, .1 @ 550 Slt Mounting--Open type relays are supplied for steel panel mount* ing. If rekrys for slate mounting are desired, specify this an your order. The single open relay price oppGes. High Voltaga Duty--Reloys for slate mounting are available in ratings up to 100 amperes @ 2400 volts. Add $2 list per relay, taplacamant Orders--Include serial number of starter. Mai. Con tinuous Current (Amps.) Values thru -GO -120 -210 -320 Fo(m IBP 2RP 3RP 4RP 6RP 8RP 1RP 2RP 3RP ARP BRP 8RP IRP 2RP 3RP 4RP GRP 8RP IRP 2RP 3RP 4RP 6RP 8RP Relays Per Panel 1 2 3 4 6 8 1 2 3 4 5 8 1 2 3 4 6 8 1 2 3 4 5 3 Nerna Type 1 Enclosed Catalog No. Price 810CAV4 CAV5 CAV6 CAV7 CAV8 CAV9 810DAV4 DAV5 DAV6 DAV7 DAV8 DAV9 S10EAV4 EAV5 EAV6 EAV7 EAV8 EAV9 S10FAV4 FAV5 FAV6 FAV7 F4V8 FAV9 $34 62 99 m 183 242 37 69 no 135 201 267 49 86 137 172 258 341 52 93 146 185 275 370 0pm Type Catalog No. 810COV4 C0V5 C0V6 -- -- -- 81000V4 D0V5 00V6 -- -- - 810EOV4 EOVS E0V6 -- -- -- 810FOV4 F0V5 F0V6 -- -- -- Price 522 49 86 -- -- -- 25 55 95 -- -- -- 37 73 121 -- -- -- 40 80 130 -- -- -- Discount Schedule A --l-- 21386 Bulletin 810 Magnetic Overload Relays Simple Adjustments Vary the Tripping Characteristics . .. Approximate ~Z 3 to 1 Approxmote Ratio 2 to 1 I Ratio Valve Cover -- intermittent Duty Continual* Duty Calibration Lines Dashpot and Core Assembly--The ultimate cur rent, or minimum operating current, is de creased by raising the core on its threaded stem. The operating time at overcurrents is decreased by sliding open the valve cover. Effects of Ambient Temperature Variations Operating Current--The minimum operating cur rent (100% ultimate current on the Tripping Charac teristics) is independent of temperature. Consequently, the relay will operate at the chosen current consistently-- regardless of ambient temperature variations at the relay. Operating Time--The operating time at overcurrents depends on the viscosity of the dashpot fluid as well as the valve opening. The viscosity-temperature relationship of this fluid, however, is favorable; as a result, the oper ating time at any given overcurrent remains suitably con stant over a wide range of temperatures. Information Required With Orders 1. Catalog number. 2. Relay trip setting, amperes AC or DC (setting will cor respond as nearly as possible to the second calibra tion line unless otherwise specified). 3. Frequency, if AC 4. Contact arrangement and type of reset (lacking this information, relays are supplied with NC contacts and an automatic reset). 5. Relays per panel and type of mounting (open type relays are supplied for steel panel mounting unless otherwise specified). Dimensions Nemo Type 1 Enclosure i------------ ------------ - Maximum Dimensions in Indies a. i i _j1__ r ] Fwm Continuous Current Amperes A B C D E F G HJK L ji G3 i l?_ _ _ _ !_ x -i F iI -- t-- i r~* 4-\ '4c-~-,rq -ew I' ! **ocv :> _r .x i -.1, - *\:*cx'X** ': i 1RP Single Relay 1 2RP Two Relays 60 120 210 320 60 120 210 320 644 11*4 644 34S* 244 IK. 944 144 44 2K* 1 -1'/. 644 1144 644 344* 244 Ms 914 l1/. a j 2K* 1 -144 744 1644 744 3'K* 244 IK* 14V* 144 44 2 114-2 944 2144 744 4'K. 3H IK. 1914 144 14. 244 2 -244 954 1144 644 4'4t* 344 IK* 9'/. 2 114 2K. 114-114 954 1144 ' 644 4'K* 344 IK. 944 2 11-4 2K 144-144 1044 1644 714 544. 444 IK. 1444 2 1254 2144 7'K. 614* 544 IK* 1914 1:4 2K* 2 -2 Vi 1!4 2K* 2 !/z - 3 --3-- 21387 Bulletin 810 Magnetic Overload Relays The Bulletin 810 is Well Designed . . . Trip pin opens contacts when core rises. Iron core rises in response to electromagnetic force. Silicone fluid passes thru valve as piston rises. Valve controls' speed of ris ing piston. Contacts open with a quick, positive break. Operating coil carries motor current which produces force on core. Piston is attached to core, retards motion. Dashpot has enlarged diam eter, frees piston near end of travel. Moving parts of the Bulletin 810 are shaded in the above cross-sectional view. Motion, indicated by the arrow, is smooth and direct, unaffected by long idle periods. Operation Normal Currents--The relay is operated thru the simple vertical movement of the iron core and attached piston. Under normal conditions, the upward electro magnetic force caused by current flowing thru the oper ating coil is not great enough to lift the core because of the restraining effect of the piston seated at the bottom of the dashpot. The relay remains inoperative. Overcurrents--When the current increases to the operating point of the relay, the electromagnetic force is increased -- enough to unseat the piston, raise the core, and operate the relay. The upward motion of the core, however, is retarded by the viscous flow of a silicone fluid thru a valve in the piston. The core rises slowly until the piston reaches an increased dashpot diameter, where it is suddenly freed; this allows the core to snap up and impart its motion to the trip pin which opens the contacts with a quick, positive break. The time required to com plete these steps In the relay's operation decreases with an increase in current. Time and current are inversely re lated, as the Tripping Characteristics on page three shows. Reset--Standard models of the Bulletin 810 are auto matically reset as soon as the current is interrupted. The core quickly drops, returning the contacts to their normal position. A check valve allows the piston to bypass the fluid in its return to the bottom of the dashpot. The action of hand reset models differs only in that1 the contacts do not re-dose until a lever on the top block is operated. There is no waiting period as with thermal relays. Adjustment Operating Current -- The minimum current at which the relay will ultimately trip is changed by varying the position of the iron core within the operating coil. To ad just the operating current of the Bulletin 810, a spring clamp is swung forward, allowing the dashpot and core assembly to be removed. Calibration lines on the core correspond to current values stamped on the nameplate. The core is screwed up or down until the line correspond ing to the desired operating current is flush with the edge of the dashpot. Currents other than those indicated by the lines are possible by interpolation. The operating current range for continuous coil duty involves the first three calibration lines, as the figure on page three indicates. The fourth and fifth calibration lines apply to intermittent coil duty only, since the currents they represent are above the maximum continuous current rating of the coil. This part of the current range is utilized only in instances where an additional device protects the coil of the Bulletin 810 from sustained overcurrent. Operating Time--The time required to operate the relay at a particular overcurrent is determined by the rate of flow of a silicone fluid thru an adjustable valve in the piston. This time can be varied by increasing or de creasing the opening of the valve. To make the adjust ment, the dashpot assembly is removed, making if possible to lift the piston from the dashpot and rotate the valve cover as required. The wide range of operating times possible with the Bulletin 810 is shown in the Tripping Characteristics on page three. The area labeled "Blue Fluid" represents the family of curves possible using the low viscosity fluid normally supplied with the relay. The overlapping area labeled "Red Fluid" represents the family of curves ob tainable with a higher viscosity fluid, supplied when neces sary. Each area is bounded by curves which represent the operating times with the valve fully opened and closed. -2-- 21388 Bulletin 810 Magnetic Overload Relays Approximate Dimensions Metal Panel Mounting Dimension A 60 Amp: 3' 1 20 Amp: 33/*' Dimension C 60 Amp: 4 Vi' 1 20 Amp: 4'/2' Milwaukee e ALLEN-BRADLEY COMPANY Wisconsin 21389