Document jNQzen2eRxYyGyKOwoRR6GrpQ

f control control relays component dorico* a-c and d-c for auxiliary and time delay applications r t V descriptive bulletin 16-301 auxiliary relays timing relays type AF type BF < '1 r I type NH, NHF type AM type DNR type Z type DDN type AMB ./ selector guide type description open con volts tact rating continuous total poles NO poles AT Br NH NHF NHL Z DnR compact machine tool relay 10 amps compact machine tool relay 6 impl general purpose machine tool 10 amps relay max. 6 poles NHL is mechanically latched-in design NHF is fixed contact design general purpose machine tool 10 amps relay max. 2 poles DPDT general purpose machine tool relay mechanically inter* locked 10 amps 600 a-c 10 max. 300 a-c 8 max. 600 a-c 2 to max. 6 max. 5 max. 8 max. 6 max. 300 a-c 250 d-c .. 2 max. 2 max. 600 a-c 16 max. 16 max. max. AM AMD general purpose machine tool 5 to 15 a-c 600 a-c 3 SW pneumatic timing relay--0.2 amps max. units to 200 sec. AMD is d-c operated .15 to .6 d-c 250 d-c max. AMB pneumatic timing component of AM relay---0.2 to 200 sec. 1 SW max. DDN DDN is d-c operated relay DDNL DDNL is latched-in d-c operated type 10 amps 250 d-c 8 1 per SW unit 1 per SW unit 8 NC poles 5 max. 4 max. 6 max. 2 max. 14 max. 1 per SW unit 1 per SW unit 7 coil data--60 cycle open gap VA closed gap VA 5 pole 80 5 pole 11 10 pole 90 10 pole 15 70 ii page i 2 2 170 30 3.4 10.5 a-c 9.3 a-c 4 3.0 watts d-c 3.0 watts d-c 2-4 pole a-c 2-4 pole a-c 92 29 5-8 pole a-c 5-8 pole a-c 111 39 5 185 a-c 39 a-c 6,7.8 16 watts d-c 16 watts d-c 6.7.8 15 watts 15 watts 5,6 August, 19S0 supr*da deacnpbve bulletin 16-302 dited Mat, 1957 end deecnpUre bulletin 16-301 deted December. 1957. milled to. E/192. 200,T>B; D61-5C. S; C/266/DB 21394 auxiliary relays types AF and BF BF-8 pole BF-4 pole v application The types AF and BF relays are the most compact a-c machine tool relay available. They are especially suitable for machine tool panels where space is at a premium and reliability essential. description type AF: Supplied in any combination of normally open and normally closed poles, from two to ten, with a maximum of five normally open or five normally closed. Contacts are rated at 10 amperes, up to 600 volts a-c, 60 cycles. Coils are available for standard ratings up to 600 volts, 25, 50 or 60 cycles. type BF: Supplied in any combination of normally open and normally closed poles, from two to eight, with a maximum of 8 normally open or 4 normally closed. Contacts are rated at 6 amperes, up to 300 volts a-c, 60 cycles. Coils are available for standard voltages up to 300 volts, 25, 50 or 60 cycles. design features ' double break fixed type silver contacts ' horizontal slide action with positive kickout independent of gravity contacts have slight wiping action to insure good circuit continuity easily accessible front terminals for straight through wiring clamp type terminals for ease of wiring - can be mounted in any position on a vertical surface for wiring from sides or from top and bottom can be mounted one against the other without additional insulation for better use of space dimensions, inches (approximate only; do not use (or construction purposes! BF-4 pole BF-8 pole AF-5 pole Ar-10 pole 21395 control relays a-c and d-c for auxiliary and time delay applications descriptive bulletin 16-301 page 3 types NH and NHF design features all knife-edge bearings are beat treated to provide case hardened surfaces, thus greatly increasing mechanical life exclusive neoprene cushion on base plate compensates for any irregularities on mounting panel, absorbs closing shock to assure longer magnet life and dampens contact vibration transmitted by neighboring contactors, thus insuring circuit continuity - friction-free, knife-edge bearings eliminate sticking or jam ming often found in vertical lift solenoid designs , positive action kick-out spring for fast opening and constant drop out time without depending on gravity alone . fine silver double break contacts provide low resistance contact . stationary contacts knurled to assure good circuit continuity . moving contact and spring in single unit assembly for quick change from NO to NC or vice versa : . all parts easily assembled and front removable Moldarta " contact base and crossbar for greater strength - clamp type terminals for easy, flexible wiring connection application The type NH or NHF, class 15-820, relay is a genera! purposes machine tool control relay used for switching control circuits and other light electrical loads. Especially suitable for machine tool panels, it sequences multi-motor machines, operates solenoids and is used as a pilot control for electrical circuits from pushbutton stations, temperature or pressure controls, limit switches and other devices. description Type NH relays are supplied in any combination of normally open and normally closed poles from two to six. The convertible con tacts can be easily changed in the held from NO to NC or vice versa without additional parts. Coils can be changed readily for adapting relays to eight through 600 volts a-c. The NHF differs from the type NH only in the contact design. Type NHF contacts are non-convertible fixed type requiring additional contact lots to change from normally open to normally closed or vice versa. 1. positive action kick-out spring 2. case hardened knife-edge bearing ratings 3. neoprene cushion a-c volts amperes (continuous) enclosures Although they are usually ordered as open devices for panel installation, type NH relays are available in NEMA type 1 en closures. Other standard NEMA types can be supplied on special order. 110 220 440 550 600 open 10 enclosed 9 dimensions, inches (approximate only; do nof use for construction purposes) (7 NH onif. 21396 auxiliary relays type NHL type Z application The type NHL. class 15-820, relay is used as an auxiliary switching device on multi-circuits where mechanical latching of contacts is desirable. Latched-in feature is desirable to eliminate slight 60 cycle hum which is usually undesirable in school and hospital installations, and to keep emergency and sequencing circuits in operating position upon return of power after a power failure. description It is simply a type NH relay with a mechanical latch mounted beneath on a common base plate. All features, advantages and ratings of the type NH are retained in the NHL. After the initial momentary pickup of the contacts by the primary relay coil, they are held in position by the mechanical latch, and thus do not require the primary coil to remain energized. Contacts are released by momentarily energizing the secondary coil that releases the latch. enclosures Type NHL relays are available in NEMA type 1 enclosures and other standard NEMA types can be supplied on special order. dimensions, inches 2, 3, 4 pole (approximate only; do not use for construction purposes) pole space required thru i application The type Z, class 16-322, a small, versatile two-pole relay with exceptionally long life, is a general purpose machine tool device for switching light loads and fractional hp motors with inherent motor protection. Used for either a-c or d-c applications, it is especially suitable as an interposing relay to operate larger con tactors and starters and as a field loss relay with d-c motors. description This relay with DPDT or DPST contacts meets U.L. Standard clear ances for 300 volt and is designed for panel mounting. It has easily removable coils, for either a-c or d-c operation. Coil burden is approximately 5 watts a-c or 3 watts d-c. design features - completely encapsulated coil front connected with dual tabs for A-MP Junior Faston ter minals plus screws for wire wrap around connections rugged Durez molded base nylon armature insulating plate adjustable kick-out spring - extremely long mechanical life .i button type contacts of extra-heavy solid silver ratings contacts continuous, 10 amps opan 9 amps anclosad coil hp rating 6, 12, 24, 115, 230 votts a-c 6, 12, 24, 115 and 230 volts d-c 14 hp at 115 volts a-c 1 hp at 230 volts a-c dimensions/ inches ^approximate only; do not use for construction purposes! 21397 control relays a-c and d-c for auxiliary and time delay applications descriplive bulletin 16-301 page 5 application This relay is designed for use where two relays must be mechani cally interlocked with each other to prevent simultaneous relay closing or lor reversing applications. description Supplied in any combinations ol NO or NC up to a maximum ot 16 poles, this relay is two type Dn relays mounted side by side on a common steel backplate and mechanically interlocked. Rating is 10 amperes up to 600 volts, hp rated as size 00 contactor. enclosures Can be supplied in NEMA 1 enclosure. Other standard NEMA types on special order. dimension.. Inches application Type DDn is a multi-circuit d-c control relay used as an auxiliary magnetic device lor switching control circuits or other light loads. They are horsepower rated to be used as size 00 contactor. The type DDn is supplied in any combination ol normally open or normally closed poles up to and including eight. The unit is mounted on a steel base with the magnet in the center and con tacts grouped above and below with a maximum ol lour poles per group lor a total ol eight. Coil may be changed without disturb ing contact assemblies or wiring to adapt the relay to voltage up to and including 250. dimensions', inches toarpcporonxsftrnu,ac't*ioonnpluy:rpdoses; u" 5, 6, 7, 8 pole 21398 page 6 auxiliary relays type DDnL latched type timing relays 2 3 application Type DDnL multi-circuit mechanically latched d-c relay! are used aa auxiliary switching devices and require no current to hold contacts in the closed position. The contacts are opened by momentarily energizing a second coil that releases the latch. Thu relay consists oi the type DDn control relay incorporated with a mechanical latch on a common base plate. All oi the DDn relay advantages and features are retained except that this relay can be supplied with a maximum of four poles only. type AMB dimensions, inches (approximate only; do not use /or construction purposes/ 2 and 4 pole i application 1 2 Type AM, class 15-827, pneumatic timing relay is designed for { general purpose machine tool a-c timing in industrial control I applications. It is available either open or in NEMA 1 and 12 enclosures and in "off-delay" and "on-delay" types. Type AMB, class 15-827, pneumatic timing relay is designed for . use on the Westinghouse type NR contactor, sizes 3 and 4. Corn 'll ponents include the pneumatic timing mechanism of the type AM H relay with a snap-action switch unit mounted on base and operating % arm. This arm initiates timing period of relay from magnet of associated contactor. 4 Type AMD pneumahc timing relay is designed for general pur pose machine tool d-c timing in industrial control applications. It is similar in construction and design to the type AM with the 5 exception of the operating coil which is designed for d-c applications. s* These pneumahc timers are applied on machine tools, conveyors, welders and automatic processing equipment where dependable timing is required. 21399 control relays a-c and d-c for auxiliary and time delay applications descriptive bulletin 16-301 page 7 description These relays are small in size, unaffected by normal variations in ambient temperature or pressure, and provide a wide range of timing adjustment combined with commercial accuracy and easy adjustments. The timing range is adjustable from 0.2 to 200 seconds (with an accuracy of plus or minus 10%) by turning a large graduated dial located on top of the relay. Accuracy of repeat timing is assured by tightening lock-plate after dial adjustment. Operating coils on the type AM are designed to operate satisfactorily on 85 % of rated voltage, and are available from 12 to 600 volts a-c. Trey are easily converted fr m "on-delay" to "off-delay" and can be supplied with or without auxiliary snap switch. operation 1 static position: no force applied to pin actuating pin b: diapbrtqm lower ir chamber 4 Air passage (lower chamber outlet) upper Air cbabec 1 vaIt# seel 9 Air passage (lower chAmber inlet) h. lock-plite 1 ' Adjustment dial i h f< V t j I ip 4 * :i b r construction and design features 1 adjustment dial with lock-plate: Micrometer-type mechanism, operated by a large dial, provides adjustment of time delay period. Dial is clearly marked lending itself to ease of adjustment for a known machine operation. A lockplate is used to lock the adjustment dial in position after time delay has been selected. This positive locking action prevents variations that can be encountered when relay mounting is subjected to severe vibration. 2 timing mechanism: Timing mechanism is housed in the die cast zinc cue of the pneumatic assembly. Assembly incorporates a large air chamber which permits a long timing range. (See operation diagram at right.) Operation and life tests of the specially prepared rubber diaphragm have proved that it will provide years of trouble-free service even on the heaviest duty cycle. 2 snap-switch: A quick-make quick-break precision snap- switch initiates the control circuit. The contact is totally enclosed for protection from tampering and dust. Its snapaction, double-break contact construction gives this switch unit a high current rating and makes it ideally suited as a circuit initiation device. 4 base plate and mounting: The open type AM or AMD relay is mounted using three or four holes in the steel base plate. The base plate is designed to permit mounting on a rough surface without danger of distortion or bending. These relays are also available mounted in NEMA 1 or 12 enclosures. 5 Operating aixtu The operating arm initiates timing peri od of the relay from the magnet of the associated contactor. 6 magnet assembly** The a-c magnet assembly consists of a core built up of sheet steel laminations and coils that are designed to operate satisfactorily on 85% of rated voltages. They are available for voltages to 600 volts, 25 to 60 cycles. Coils are easily changed from the front of the panel. The d-c magnet assembly is a solid core type with coils available from 12 volts to 550 volts d-c. 2 force applied to pin pushes six into upper cham ber. 3 force removed from pin: air from upper chamber es capes into lower chamber-- spring assists in returninf pin to static position. When the actuating pin (a), attached to the lubber diaphragm (b), is raized by action of the magnet frame, air in the lower air chamber (c) is forced through the air passage (d) into the upper t air chamber (e). I Timing is initiated when the force on the actuating pin is removed. I The diaphragm then tends to move downward due to the action of | the spring (not shown) and air returning to the lower air chamber I through a constricted air passage (g). i As the actuating pin moves down, the outer end of the operating ; lever (not shown) moves up, thereby actuating the contacts on the j snap-switch at the proper time. I The overall timing period is determined by the position of the valve nut in the orifice and the air passage space between the valve nut. Variation in the size of the air passage is obtained by rotating the large dial located on top of the assembly. Turning the dial clockwise reduces the air passage and increases the time delay. 21400 descriptive bulletin 16-301 page 8 control relays a-c and d-c timing relays 1 types AM, AMD and AMB continued dimensions/ inches (approximate only; do not use lor construction purposes) type AM type AMO type AMB swiicn when needed snap twitch contact ratings 60 or 25 cycles -c volts 60 cycle continuous & interrupting open gap 110/115 208/220 440 550 15 amp 10 amp 6 amp 5 amp 185 VA closed gap 39 VA Westinghouse Electric Corporation Standard Control Division: Beaver Plant printed in U.S.A. Beaver/ Pa. 21401 Instructions for Type MW-31 and 41 Side Mounting 3rd Overload Relay Kit for Starters -- Sizes 3 and 4 I.L. 13077 Figure 1. Component Parts of 3rd Overload Relay Kit MATERIAL (1) Pan Screw (2) Washer (3) Washer (Neoprene) (4) Connector (Black) (5) Extension Mount ing Plate (6) Connector (7) Pan Screw and Washer (8) Overload Relay MW-31 or MW-41 (9) Extension Arm (10) Spacer (II) Screw (12) Lockwasher Installation 1. Remove starter from enclosure. 2. Referring to Figs. 2 and 3, disconnect wires to right hand overload relay as follows: a. Disconnect strap at point "A". b. Disconnect wire "H" at point "K" and wire "C" at point "L". 3. Remove right hand overload relay from starter by removing two mounting screws. Cut away insulation plate to first score mark. Using screw and lockwasher (11) and (12) place screw (11) thru clearance hole ("X" in Fig. 1) in extension mounting plate (5) and screw into middle tapped hole in main base. 4. Using the overload relay removed in Step 3, mount relay on starter and exten sion mounting place using original screws. These screws will go thru the clearance holes in the overload relay, thru the clear ance hole in the extension mounting plate and into the tapped holes in the main base. 5. Mount overload relay (8) with screws (1), (2) and (3) following the same procedure as outlined in Step 4. See Figure 4. Note: This relay is connected in load lead T2 so " - J r. e, 1963 Supersedes I.L. 12633, dated Sept emb e r, 1960 21402 Page 2 & * Extension Mounting Plate Overload Relay (from kit) (9)Extension Arm Figure 2. Starter Before Conversion Figure 4. Relays Mounted on Extension Mounting Plate. Extension Arm in Place. that line sequence is now Tl, T3, T2 in stead of Tl, T2 and T3. 6. Reconnect strap at point "A". Reform wire "C" and connect to point "D". Recon nect wire "H" to point "K". See Figure 3. 7. Using the connectors (4) and (6) from kit (see Figure 1), connect 4 from point "E" to "F". Connect 6 from point "L" to "G" as shown in Figs. 3 and 5. Figure 5. Completed Conversion Figure 3. Wiring Diagram-Before Conversion Wiring Diagram-After Conversion 8. Take extension arm (9) from kit (see Figure 1) and mount on reset arm as shown in Figure 4 using screw (7) from kit. Add spacer (10) under reset arm on left hand side with screw (7) as shown in Figure 5. Heaters Each heater is identified by a code marking stamped on one terminal near the mounting hole. The Heater Application Table indi cates the range of full load current to which a given heater may be applied. This range is so selected that the current to produce ultimate tripping of the relay will be approximately 115% to 125% of the rated motor current. The current rating of the relay (see Heater Application Tables K and N)q is based on an ambient temperature of 40UC. For protection of the motor when it and the relay are operated in a common ambient 21403 Pile 1 Description Figure 6. Install Heater "B" in the Relay, Using Small Screes "a" Threaded Into Holes or Install Heater "C Using Larger Screes "bV Be sure the Looped Portion Enters the Recess in the Relay. temperature, heaters should be applied according to Heater Table for average ap plications. When the room temperature surrounding the motor exceeds that at the starter, assume a decreased motor current of 1% for each degree C. difference in tem perature and select heaters accordingly. When the room temperature'at the starter exceeds that at the motor, assume an in creased motor current of 1% for each degree C. difference in temperature and select heaters accordingly. Confining the relay in a small space, such as a starter cabinet, with other appa ratus which produces heat will raise its ambient temperature, affecting its tripping value. Heater Application Tables P and S are for use with enclosed starters when the ambient temperature within the cabinet and immediately surrounding the relay is above the ambient temperature in which the motor operates. Type MW Thermal Overload Relays are used in linestarters and control panels to provide overload protection for motors. Overload protection is obtained by a bi metallic, snap-action disc consisting of two dissimilar metals laminated together and pressed into a concave disc. When heated to a predetermined temperature by a heat ing element, the disc snaps to its convex position, opening the contacts and stopping the motor. When the disc cools, it snaps back to its original position. Attempted reset during this cooling period will not damage the relay. With a proper choice of heaters, the relay may be used on a-c or d-c circuits of from 14.2 to 173 amperes at not more than 600 volts. The relay con tacts will carry and break currents in the contactor coil up to 2 amperes in an a-c circuit and 50 volt-amperes at a maximum of 1 ampere in a d-c circuit. The relay will provide protection against abnormal load conditions to current values exceeding locked rotor current. In ac cordance with the National Electric Code the relay should be protected against short circuits by fuses rated at not more than four times the rated motor current, or by a time limit circuit breaker set at not more than four times the rated motor cur- Operation The relay is designed to operate the con tacts in any one of three positions, "Auto", "Hand" and "No Stop". The position of the control spring in the notched push-rod controls the action of the push-rod. V/hen the spring is in the "Hand" posi tion at the time the bi-metal snaps open the contacts, the "Reset-Stop" push-rod moves to engage and retain the contacts in the open position. After the disc has cooled, the push-rod may be depressed to reset the contacts to the closed position. The push-rod may also serve as a stop button by depressing it further to open the contacts. 21404 Hand Page 4 I Figure 7. Control Spring Positions The "No Stop" position of the spring is similar to the "Hand" position except that the push-rod cannot be depressed as a stop button. When the spring is in the "Auto" (Automatic) position, the push-rod is pre Figure 8. Average Time Current Curve vented from holding the contacts in the open position, hence, when the disc cools off, the contacts will automatically close and re-energize the circuits. The push-rod again may serve as a stop button. Eirtis -- HEATER APPLICATION TAftLE OFCI UISI EBCLIZIltZ HIT CICLIZRCt t UK 3 49 41FILL LOII EHKIT ' nun It 4C nu ion emeu IF HIM cnuiT unit ii h*c it 31 FILL LIU caaiEit if iitn 4 41cmieit in in IT l*C 12:1 4 8 *8 1254 35 1254smt .= B'r<li HOI HIF. ISM i -- IBM - Mil lif leap liniiK TEIP. 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