Electric hoist etf 250 1200 electrical circuit diagram. Electric hoist - starter diagrams - electrical circuits - electrical service reference book. Electrical circuit of an electric hoist

It is powered by direct current from the rectifier in the starting cabinet.

A copy of the diagram is attached by the manufacturer to the electric hoist passport. Additionally, hoists are supplied with two-speed motors - having two stator windings for operating speed and for precise positioning of the load. The hook suspension contains a freely rotating rope block in a metal casing that prevents the rope from falling off. Bulgarian hoists The bad electrician is the one who doesn’t know this circuit, oddly enough, but there are such people. It is worth noting: Failure to follow certain rules when connecting an electric hoist to the network can lead to complete breakdown of this mechanism, damage to the cargo, as well as harm to the life and health of people. The design of the lifting mechanism for a gear manual hoist is presented in the work.

Drums 4 are located on both sides of the low-speed shaft 3. This is a high quality of manufacturing and assembly, high cost and limited capabilities for prompt service. For trolley power supply, a small-sized closed busbar or trolley route, designed according to the PUE, should be used.

There is no provision for reducing the control circuit voltage. Its advantages include: reliability and long service life of the equipment; high performance and wear resistance; fairly light weight of the structure; high level of security.

Electric winch. Review and modernization.

Wiring diagram for the telpher for power supply 380

Work on connecting an electric hoist (380V) in accordance with technical requirements can only be carried out by specially trained specialists.
Before starting work, the equipment is de-energized and only after that the network and control cables are connected in accordance with the connection diagram located on the side of the electrical panel cover. A copy of the diagram is attached by the manufacturer to the electric hoist passport. The device is connected to the power supply using a circuit breaker and fuses. The circuit breaker is designed to interrupt an unloaded electrical circuit when carrying out technical work on electrical wiring or mechanical components. It is recommended to place the circuit breaker and fuse block in hard-to-reach places, and work with it should be free and easy. Power cables must have increased resistance to mechanical damage. When connecting, it is necessary to check the compliance of the mains voltage specified in the standard table. After connection, the buttons are checked for proper operation. To do this, press the “lift” button, and if the load moves down, you need to swap the connection points.

After installing the lifting equipment, it is necessary to check the integrity of the cables, the absence of damage to the mechanical components of the equipment and the possibility of de-energizing the hoist using the mains switch.

Let's consider the connection option using the example of a hoist produced by Balkansko Echo R. Bulgaria. Series T10, T39 Hoists of the T45, T78 series are connected in the same way

Telphers are supplied in two versions:

Classification

The lifting mechanism of a manual worm hoist with a plate load chain forming a double chain hoist is presented in detail in the work. With the help of these devices, the following are switched off: the lifting mechanism when the hook suspension reaches the uppermost position, the movement mechanism when the hoist stops approach the stops.

The number of the supervision service and its structure must be determined by the owner of the cranes, taking into account their number, operating conditions, and agreed in writing with the Rostechnadzor authorities.

The switches S7, S8 are influenced by the rope handler through a mechanical kinematic chain. Once again I would like to emphasize the importance of correctly connecting the hoist and the control panel to it. The current price level for electric hoists is as follows: For domestic standard sizes - from 80 thousand.

Along with the rope, the rope layer also moves on the drum - a device necessary not so much for laying the rope in streams, but for turning on and off the limit switches for over-lifting and over-lowering. Why is it so important to connect the hoist correctly? Hoists are universal devices designed for moving heavy objects along vertical and horizontal planes.

Electrical equipment of electric hoists Electrical circuit diagrams of hoists with different designs have much in common and noticeable differences. The gearbox housing has a drain plug 16 and a vent plug 7 7. Another delivery option is with frequency converters for the smoothest starting and braking of drives.

Hoists designed for installation on single girder cranes are supplied with a six-button control panel. Along with the rope, the rope layer also moves on the drum - a device necessary not so much for laying the rope in streams, but for turning on and off the limit switches for over-lifting and over-lowering. It is powered by direct current from the rectifier in the starting cabinet. Power in mechanics is usually denoted by the letter N, in electrical engineering by the letter P. The lifting mechanisms shown in Fig.

TE-050 electric hoist for 500 kg

Excluding manual hoists and car jacks, electric hoists are the most common lifting machines in the world. Lifting motor Asynchronous two-speed electric motor with cone rotor and stator and built-in asbestos-free cone brake.

The designs of electric hoists also vary somewhat depending on their load capacity. Satellites in Fig. Screw channels for the rope are made along the surface of the drum. It is powered by direct current from the rectifier in the starting cabinet. Electric hoist PRORAB LT 800 P

Firstly

For reasons of safe operation of the device, when connecting a frequency generator (or any other device) to the power supply, it is imperative to install a circuit breaker. The machine is installed in front of the frequency switch.

Moreover, if the frequency converter is connected to a network with three-phase voltage, then it is necessary to install a machine that is also three-phase, but with a common shutdown lever. This will allow you to turn off power from all phases simultaneously if there is a short circuit or severe overload on at least one phase.

If the frequency converter is connected to a network with single-phase voltage, then a single-phase machine is used. But at the same time, the current of one phase is taken into account, multiplied by three.

When connecting a three-phase machine, its operating current is determined by the current of one phase.

It is definitely forbidden to install a circuit breaker into the neutral cable gap, both with a single-phase connection and with a three-phase one. Such a connection only looks identical in appearance (it is a mistake to understand that there is only one circuit and it does not matter where it is broken). In fact, if the phase cables break, when the machine is triggered, the power is completely turned off and there will be no phases on the device circuits at all. It is safe. And when the machine with a broken zero is triggered, the operation of the device will stop. But at the same time, the motor windings and frequency circuits will remain energized, which is a violation of safety regulations and is dangerous for humans.

Also, under no circumstances does the grounding cable break. Like the zero, they must be connected to the corresponding buses directly.

What advantages does the device itself have?

It has the following advantages:

• Unlike a crane, it has compact dimensions. You can always roll up all the loading equipment into a small truck.
• You can use it anywhere that has a strong enough beam or hook to grab onto.
• A rail guide under the ceiling is enough to place the hoist on rollers and give it a greater degree of mobility.
• Several units can work in tandem synchronously, which makes it possible to transport long loads, such as bundles of pipes.
• There is a huge amount of specialized equipment supplied optionally. These could be barrel grips, dynamometers, daily load capacity recording systems, etc.
• Very high ascent speed. Some models can deliver up to 10-12 meters in one minute. Sometimes they can be equipped with setting this parameter from the remote control. This is very useful when loading racks.
• The strength of the operator does not matter.

How much does this product cost?

Our price for an electric hoist (telpher) is low, because we work without intermediaries. You can always purchase these devices of various load capacities, as well as a large number of parts and additional equipment. Each product has a safety margin of 4 to 1, which is specially made in case one of the chains breaks or twists in the wind. Abuse of this resource is strictly prohibited.

Cable for hoists and crane beams, review and comparison

How to choose a cable for a hoist, beam crane or overhead crane? Which one do you need: with or without a cable? How to lay the cable for the hoist? You will find answers to these questions in our article!

A telpher is an electric hoist equipped with a carriage for movement. It is indispensable for lifting and moving cargo and can dramatically increase labor productivity in an enterprise.

Most often used as part of devices such as beam cranes and overhead cranes.

The scope of its application is quite wide - from small industries and warehouses to railway stations, shipyards and hydroelectric power plants.

The hoist is controlled from a remote control, which can be either fixed to the surface or located in a mobile cabin.

Therefore, it is important to thoughtfully approach the issue of choosing a cable for the hoist, because the reliability and safety of the control and power systems for the lifting mechanism depends on it. The right choice will eliminate the possibility of failures and minimize risks in production.

How to choose a cable for a hoist

The most common hoists are powered by a current source with a voltage of 380 V and a frequency of 50 Hz. Because The cable for electric hoists experiences high loads during operation; ordinary wire is not suitable for us.

It must be resistant to abrasion and bending, and have a moisture-proof shell. Depending on operating conditions, additional protection from exposure to high and low temperatures and petroleum products may be required.

Most often, a cable is used that has one or more steel cables in its design, or a steel cable is used separately during installation.

Flexible cable for hoist

KG

– thanks to rubber insulation, it provides the necessary flexibility and moisture resistance.

Has several stranded copper cores. Insensitive to ultraviolet light. Also available in a cold-resistant version. It is usually used to connect equipment over a distance not exceeding 60 meters.

When connecting, it is recommended to use a steel cable. Go to catalog

KUPR

– used in rooms with any degree of humidity. Resistant to pressure and vibration. Used for indoor installation.

If long-term operation is planned outdoors or in rooms with low temperatures, then the version marked “HL” is used.

It contains special frost-resistant plasticizers in the rubber shell. Just as in the case of the cable, the KG is mounted together with a steel cable. Go to catalog

Cable for hoist with rope

KPG1U

– cable with rubber sheath, resistant to bending. It contains a core made of synthetic armid (performs the function of a cable), which increases its resistance to tensile and mechanical stress.

It is resistant to ultraviolet radiation, allowing it to be used outdoors. One of the most durable brands of cables for crane control panels. Suitable for connecting all types of cranes - both overhead and gantry.

Go to catalog

KPG2U

The difference between KPG1U and KPG2U is that the latter has an additional internal rubber shell. It is also produced in a variation with an oil-resistant, non-flammable sheath, or a polyurethane sheath (KPGPUE2U, KGRPUE), which significantly increases the cable’s resistance to bending, but significantly increases its price. Go to catalog

Comparative analysis of cables for hoists and crane beams

The outer sheath plays a decisive role in the durability of cables used when connecting hoists, overhead cranes and overhead cranes. Comparative data for some cable brands, identified experimentally, are given below.

Tensile strength – resistance to stretching and bending, the higher

value, the greater the load the material will withstand before its destruction.

Tear resistance is the ability of a material to function in the presence of damage, the higher

value, the longer the service life.

Abrasion - resistance of the upper layers of the material to damage than the lower ones

value, the greater the load must be applied to form them.

*All data was obtained from the official catalog of the Kolchuginsky plant.”

Installation and cable laying for the hoist

Installation is carried out using gutters made of PVC, concrete or wood. It is also possible to connect using a steel cable - the cable is secured with clamps or galvanized tape along its entire length. In this case, the entire mechanical load during operation of the hoist falls on the cable.

IMPORTANT!

Before performing installation work, be sure to coordinate your actions with energy supervision!

Electric hoist TE 025 31100-23U2

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Hello! I decided to hang a hoist to remove the engine. It looks like it's new, but it's been there for a long time. There is no network connection cable. It is designed for both 220V and 380V. The diagram has barely survived, but part of it has been destroyed by time. Searches on the Internet only yielded a schematic diagram, from which it is not clear what to connect where.

I ask for help in connecting to a 220V network. Maybe someone has the same thing or has dealt with similar devices. I will be very grateful!))

Telpher 3.2t | 3 tons electric Bulgarian

The catalog of Bulgarian 3t hoists is combined with a table of technical characteristics, which indicates: markings of Bulgarian hoists depending on the lifting height, speed, electric motor power and weight. Follow the link to view the technical characteristics of Russian electric hoists 3 tons.

• Other models of Bulgarian hoists
• 0.5t
• 1t
• 2t
• 5t
• 6.3t
• 8t
• 10t

Overall dimensions may differ depending on the version: with micro-lift, with load limiter, with load limiter and with micro-lift.

Device and design

Bulgarian 3 ton hoists have a block-composite design system consisting of 8 structural groups:

1. Electric motor with built-in brake;
2. Drum;
3. Planetary reductor;
4. Rope layer;
5. Elastic compensating coupling;
6. Frame;
7. Suspension with hook;
8. Electrical equipment.

Electrical diagram for connecting to the network

Connection of an electric mobile hoist 3 tons is carried out in accordance with the electrical installation diagram specified in the operating instructions for electrical equipment. Having connected a 3t industrial electric telpher made in Bulgaria to the network, you need to check the correct connection of the phases:

1. Command switch (control panel)
   - check the correct direction of movement of the load when pressing the up and down buttons. If the directions do not match, swap the 2 cores of the power cable.
2. Limit switches
   - set the hook to the middle position, the rope guide remains in the middle of the drum, install limit rings on the limit switch rod at an equal distance from the control segment on both sides. To check the correctness of the connection diagram, turn the button up and press the limit ring to the maximum travel of the switch. If the hook suspension has stopped - the electrical connection diagram is correct, but continues to move - swap the two wires of the limit switch cable.

Download electrical diagrams of electrical equipment of hoists

From “Systems of Quality” you can buy hoists for electric crane beams with a lifting capacity of 3 tons, new and warehouse storage, produced in Bulgaria, Russia and Ukraine with a height of 6, 9, 12, 18, 24, 30, 36 m.

Also in stock are Soviet electric hoists 3 tons after major repairs for beam cranes, cantilever, bridge and gantry cranes, and other single-beam and double-beam lifting mechanisms

We will carry out highly qualified repairs or supply spare parts for the 3t electric hoist: travel motor gear, friction lining, fan, fan nut, brake casing, gear shaft, elastic coupling assembly, drive trolley (carriage, cat, trolley), limit switch, trolley gear unit , motor terminal box cover, rope handler, front shield of the KG electric motor, VOT load limiter, KG motor rotor, electric motor grille, KG electric motor rotor, MA brand displacement motor, Bulgarian hoist coupling body, PKT push-button remote control.

Price of a mobile electric hoist with a lifting capacity of 3 tons

The price of an electric Bulgarian hoist 3 tons depends on the lifting height, starting from 12,000 UAH with VAT for an electric hoist after a factory audit with a subsequent 12-month warranty. To calculate the cost of a Balkankar mobile hoist of the required model, contact the manager or send a request by email.

From Quality Systems you buy reliable hoists with a lifting capacity of 3 tons, brand T, TE (Barnaul), demag, etf

Telpher 3.2t | 3 tons electric Bulgarian updated: November 11, 2022 by: AIR Ukraine

Reversible connection diagram for a magnetic starter

Greetings, dear readers of the site elektrik-sam.info!

In order to start the electric motor in forward and reverse directions, a reversible control circuit is used on a magnetic starter.

This article discusses in detail the step-by-step operation of the circuit. For a diagram in which the motor operates only in one direction, without reverse, see the article non-reversible magnetic starter connection diagram .

At the conclusion of this article, watch a video demonstrating the detailed operation of the engine reverse starting circuit.

First, let's consider a reversible connection circuit with a 220V magnetic starter coil, and then the operation of the circuit.

Phases A, B and C of the supply voltage are supplied to the terminals of the asynchronous motor through: