Crane Control Contactors and Relays

Transcription

1 October 8 DC Relays Type KC Heavy-Duty Mill 75 Contact Conversion The fully visible contacts have NEMA ICS--5 heavy-duty interrupting ratings and are easily converted in the field using just a screwdriver as illustrated in Figure 5. Pressure terminals permit quick installation of up to two # wires, solid or stranded, per terminal. The molded operating coils provide maximum protection against moisture and mechanical abuse. Basic -Contact Type KC Relay The Type KC line of control relays complements the mill-type, front connected DC contactors (Bulletin 7, Type K). Each device is completely assembled and ready for mounting on metal panels without additional insulators or special hardware. These dc mill type relays are designed for heavy industry service and are suitable for use on moving machinery. They are arranged for steel panel mounting with front connections. Unit circuit blocks have two captive mounting screws and are interchangeable between relays. They are easily convertible from normally open to normally closed or vice versa. Visible contacts are of double break design. Figure 5. Contact Conversion Features Slide Movable Contact Out are easily field convertible from NO to NC operation and vice versa. Melamine molded contact blocks feature wear-resistant nylon guides and stainless steel springs. Retained knife-edge design for reliable alignment. rated 5 amperes continuous. No adjustments to maintain armature spring and air gap are fixed. Encapsulated coils feature pressure type saddle terminals. Basic relays are available with,, 6 or 8 contacts. All relays in the line have same mounting dimensions. Flip Over and Insert Contact Standards and Certifications NEMA ICS-... NEMA ICS-5.. Technical Data and Specifications Voltage: 6 Vdc maximum. Operation: Magnetic. Mounting: Steel panel. Electrical Ratings: 5 amperes continuous. amperes inductive breaking at 5 V. amperes inductive breaking at V CA58E

2 76 DC Relays Type KC Heavy-Duty Mill Accessories Table 7. ac/dc Rectifier Kits 5/6 Hertz AC Supply Voltage For operating relay from ac supply voltage. Dimensions Figure 6. Approximate Dimensions in Inches (mm) Table 8. Type KC Relay Coil Required Part 95 Vdc C8EB Series (7.6) Side.5 (.) (6.) (5.) Mtg. Holes End Slots for /6" Screws Front Approximate Dimensions in Inches (mm).88 (7.) (.) 7 (9.5) 8. (.) 5.9 (.8) (5.) hen Ordering Specify of relay from Table 9. Table 9. Type KC Heavy-Duty Mill Relays of Contact Arrangement Open Type Relay NO NC Part A7-75- A7-75- A7-75- A7-75- A7-75- A7-75- A7-75- A A7-75- A7-75- A7-75- A7-75- A A7-75- A7-75- A7-75- A7-75- A October 8 Price includes assembled relay complete with operating coil rated V. Consult factory for other voltage ratings. The maximum number of NC contacts satisfactorily operated by the magnet is. Discount Symbol CD- Consult Sales Office for Pricing CA58E

3 October 8 DC Relays Types KPR & KFL Special Application 77 Technical Data and Specifications Voltage: Maximum 6 Vdc. Operation: Magnetic. Mounting: Steel panel or insulated panel Dimensions Contact Ratings: 5 amperes at V amperes at V Duty: Continuous. DC Plugging Relay Type KPR Plugging The Type KPR Relay features a diode assembly mounted on the relay base and wired in series with the relay operating coil. The relay detects when a dc motor is being plugged. (Plugging is the sudden reversal of the polarity applied to a relay motor causing it to rapidly stop and reverse rotational direction.) The coil circuit of the plugging relay is connected to parallel with the motor armature and monitors armature voltage. During normal dc motor operation, the diode is non-conducting and the relay is de-energized. During motor plugging, polarity reverses, causing the diode to conduct and operate the relay. The contacts of the relay cause motor circuit contactors and resistors to properly plug the motor. Type KFL Field Loss The Type KFL relays are no longer manufactured. The suggested replacement is the Type 9 single-pole normally open relay. Refer to Page 7 for application and ordering information. Standards and Certifications NEMA Standard NEMA Standard NEMA Standard Figure 7. Approximate Dimensions in Inches (mm) Table. Type KPR Plugging Description hen Ordering Specify Complete Catalog or Table. Type KPR Plugging Relay (Open Type) Approximate Dimensions in Inches (mm) T Type KPR- Relay (8.6) Type KPR- Relay.87 (7.9) (69.9) Motor Voltage Vdc 55 Vdc Vdc 55 Vdc (5.) T Mtg. Holes and Slots for /6" Screws Relay Type KPR- KPR- KPR- KPR- 5.9 (.8) (5.) Catalog 7UD- 7UD-55 7UE- 7UE-55.6 (7.6) Front Side Approximate eight lbs. (5. kg) KPR- relays are for -step or graduated plugging. Consult factory for application details..5 (.) (6.) Discount Symbol CD- Consult Sales Office for Pricing CA58E

4 78 DC Timing Relays 7 VTH & 7 CTH October 8 Table. Challenger Bulletin 7 VTH Timing Relay Data (Sorted by Old ) Timing (Seconds) Old New Timing Relay Replacement The replacement Type 7 heavy-duty DC relays provide adjustable ON-delay timing factory set to duplicate the time delay provided by the previous type CTH and VTH timers. These relays are supplied with equivalent pilot duty contact ratings and configuration A7-69- A7-69- A7-69- A7-69- A A A A7-69- A7-69- A7-69- A7-69- A7-69- A7-69- A A A A7-69- A7-69- A7-69- A7-69- A7-69- A7-69- A A A A7-69- A7-69- A7-69- A7-69- A7-69- A7-69- A A A A7-69- A7-69- A A A A A A A A A A A A A A A A A A ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED5 7ED5 7ED5 7ED5 7ED5 7ED5 7ED6 7ED6 7ED6 7ED7 7ED7 7ED7 7ED7 7ED7 7ED7 7ED8 7ED8 7ED8 7ED9 7ED9 7ED9 7ED9 7ED9 7ED9 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED Discount Symbol CD- Consult Sales Office for Pricing CA58E

5 October 8 DC Timing Relays 7 VTH & 7 CTH 79 Table. Challenger Bulletin 7 CTH Timing Relay Data (Sorted by Old ) Timing (Seconds) Old New A7-69- A7-69- A7-69- A7-69- A A A7-69- A7-69- A7-69- A7-69- A A A7-69- A7-69- A7-69- A7-69- A A ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED 7ED5 7ED5 7ED5 7ED5 7ED5 7ED5 Discount Symbol CD- Consult Sales Office for Pricing CA58E