GB519543A - Improvements in and relating to the control of electric hoists, lifts or the like - Google Patents
Improvements in and relating to the control of electric hoists, lifts or the likeInfo
- Publication number
- GB519543A GB519543A GB27655/38A GB2765538A GB519543A GB 519543 A GB519543 A GB 519543A GB 27655/38 A GB27655/38 A GB 27655/38A GB 2765538 A GB2765538 A GB 2765538A GB 519543 A GB519543 A GB 519543A
- Authority
- GB
- United Kingdom
- Prior art keywords
- control
- coil
- contactor
- energize
- sept
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/46—Adaptations of switches or switchgear
- B66B1/48—Adaptations of mechanically-operated limit switches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Stopping Of Electric Motors (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
519,543. Control of A.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 22, 1938, No. 27655. Convention date, Sept. 23, 1937. [Class 38 (iii)] Braking.-Upon operation of a stop switch H, an alternating-current hoisting motor M is disconnected from its supply and a contactor SG is closed to connect a source of directcurrent to the motor, an auxiliary relay A being then de-energized to disconnect a brake coil B. When the mechanical brake controlled by the coil B becomes effective contacts BK open to de-energize the contactor SG and terminate the electrical braking. The control applies to the lowering operation of the hoist, and a slow lowering speed may be obtained by introducing the electrical braking by operation of a switch DG to energize the relay SG, the mechanical brake coil B remaining energized until the stop switch H is operated.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE519543X | 1937-09-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB519543A true GB519543A (en) | 1940-03-29 |
Family
ID=6550566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27655/38A Expired GB519543A (en) | 1937-09-23 | 1938-09-22 | Improvements in and relating to the control of electric hoists, lifts or the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB519543A (en) |
-
1938
- 1938-09-22 GB GB27655/38A patent/GB519543A/en not_active Expired
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