Review and technical characteristics of PML starters: 1100, 2100, 1220 and others

Description

An electromagnetic starter or PML is a device that combines various types of switching mechanisms necessary to start, reverse and stop a particular motor. In turn, switching devices include various types of relays, push-button stations, switches, contactors, etc.

Photo - PML 2200

Reversible and non-reversible starters are necessary for remote control of the engine, starting and stopping it. The device is widely used in ventilation and pumping systems, housing and communal services (elevators, escalators) and other industries where remote control of working mechanisms and devices is required.

Photo - PML 3200

The design of the device is quite simple. An armature and a core are installed in a plastic case. There is a special pulling coil located on the heart. The starter circuit looks like this: traverse guides are installed in the upper part of the device, and an anchor is mounted above them. Also, special bridges with springs for blocking contacts are mounted near the anchor.

The operating principle is as follows. When electric current is applied, voltage begins to collect in the coil. As a result, the magnetic armature is attracted to it, closing the open contact and opening the closed one. A magnetic starter of the PML type turns off when the contacts open; to control this process, springs fix the moving parts of the system, and when turned on, return them to their original position.

Photo - model 3100

Depending on the size of the starter, it can be installed on so-called attachments - PKL or RTL. PKL series consoles have the following parameters:

1. Current – ​​16A;
2. Current type AC, DC;
3. Shell – 660V;
4. Operating temperatures up to 500 C;
5. Can be used as components at frequencies up to 50 Hz;
6. Protection – from IP00 to IP40;
7. Durability: 3.0 million cycles;

In this case, only one attachment can be installed on one starter.

Designation and use of PML starter

Magnetic starter device

A PML starter is a device that connects different types of switching devices that are needed to start, operate, and also turn off the designated motor. Switching devices are called different types of relays, switches, push-button posts, contactors, etc.

Different types of starters, whether with or without a thermal relay, are needed to control the engine, turn it on and off remotely. The device is widely used in pumping and ventilation systems, in elevators and other areas where it is necessary to control working devices at a distance.

The operation of the device is not complicated. An armature and a core are installed in a plastic housing. The latter contains a special coil.

Traverse guides are installed on top of the starter, and an anchor is mounted on top of them. Near it there are special bridges with springs for blocking contactors.

Marking

The designation of each starter gives consumers an understanding of the conditions under which to use this device and its technical characteristics. Depending on whether the model is with or without emergency shutdown buttons, PMLs come in the following versions (GOST 14254 80):

• 0 - IP00;
• 1 - IP54 (buttons);
• 2 - IP54 (buttons);
• 3 - IP54 (buttons and signal lamp, when turned off or on, the LED lights up);
• 4 — IP40 (no buttons);
• 5 - IP40 (with buttons);
• 6 - IP20.

Also, classification and marking is carried out based on the presence or absence of a thermal relay:

• 1 – irreversible, without thermal relay;
• 2 – irreversible, with thermal relay;
• 3 – reversible, without relay;
• 4 – reversible model with relay;
• 5 - reversing starter with mechanical and electrical interlocks, without thermal relay;
• 6 – reversible, with mechanical and electrical contact interlocks, there is a thermal relay;
• 7 - the starter is represented by star and delta circuits.

Photo - schematic diagrams of PML

Starters of the PML 1220 series are a component product used in control circuits of electric drives and stationary electrical equipment, intended for frequent remote switching on and off of power electrical equipment. circuits in normal operating mode, as well as for remote starts, stops and reversals of 3-phase electric asynchronous motors that have a short-circuit electric rotor winding in an alternating current network (~) at a frequency (f) of 50-60 Hertz and an operating voltage (U) of up to 660V .

When modifying PML1220 contactors with thermal relays, controlled electronic motors are protected from overload and from currents that appear when one of the phases breaks, as well as from phase imbalance. Protective housing for base currents from 10 to 32 A - plastic, for base currents from 40 to 95 A - metal

PML 1220 starter (closed, non-reversible contactor, with a shell, with a thermal relay, designed for a current of 10 amperes, control coil voltages are designed for 24V, 36V, 40V, 48V, 110V, 127V, 220V, 230V, 240V, 380V, 400V, 415v, 500v, 660v).

DESIGN OF CONTACTOR PML 1220:

- anchor and core; — retractor coil; — traverse; — anchor of the magnetic system; — bridges of the main and additional ones. (locking) electrical contacts with springs.

When voltage is applied to the electric coil, the armature is attracted to the coil. In this case, normally open electrical contacts close, and normally closed electrical contacts open. The PML magnetic contactor is switched off when the normally open electrical contacts are opened and the normally closed ones are closed. To do this, return springs move the moving parts of the starter to their original position.

This contactor model can also be manufactured in a housing - with a built-in thermal relay and signal lamp. The built-in thermal relay in the PML 1220 starter performs the function of protecting against motor overload during operation and against current strength exceeding the permissible norm.

This type differs in the following parameters:

— number of block contacts, making and breaking; — the value of the rated current.

Using adapter panels, if necessary, it is easy to replace any starters of other models with PML 1220 starters.

TECHNICAL CHARACTERISTICS OF MAGNETIC STARTER PML 1220:

The devices offered by our company are distinguished by their long service life and high quality. In order for them to work as long as possible and not require replacement, it is important to comply with the operating conditions:

— The temperature should not exceed 50 C or be lower than -40 C. — The maximum altitude above sea level is 2 km. — Relative humidity at a temperature of +35 0С – up to 100%. — Environmental requirements when operating PML 1220 starters: without large amounts of dust; not explosive; does not contain vapors in concentrations that destroy insulation; without aggressive gases.

You can buy a PML 1220 magnetic starter. You can easily place an order through the online contact form with the operator, by phone, or simply send a request by fax. We offer high-quality products of our own production and those produced by other time-tested companies. Call us!

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Options

Depending on the type, starters can be produced for extreme operating conditions, explosive or unprotected. Let's consider the technical characteristics that the PML 1100 magnetic starter has for connecting to a three-phase motor with a power of up to 5 kW:

Starter PML-1220-10A-220AC-(9-13A)-UHL3-B-KEAZ:

PML AS-25:

PME is a special type of magnetic starter; it is very similar to the classic PML, but has a slightly different purpose. It is used together with an attachment for remote control of stationary electrical appliances. For example, for machine tools with three-phase motors. Installation is carried out vertically using screw clamps. The maximum permissible deviation is 15 degrees. The instructions for use indicate that if the tilt is made too large, the switch may not work correctly.

Starters without buttons, the manufacturer also notes a low level of protection - IP00, although there are models with IP40. Operates on both direct and alternating current. Let's look at the technical specifications:

Technical characteristics of the PML 2200 starter:

Magnetic starter type PML 2100:

Each individual PML model has different overall dimensions:

Depending on the modifications, some dimensional errors are possible, but they do not exceed a few millimeters. During installation, such a deviation will not play a big role.

Photo - reverse PML 3500

Video: review of the PML 1220 starter

MP characteristics

Starter characteristics

Depending on the type, devices are produced for emergency situations, dangerous or unprotected.

PME is a special type of MP, it is similar to regular PME, but it has a different purpose. It is used with an attachment to control electrical appliances at a distance. For example, for machine tools with asynchronous motors.

Install the MP vertically using screw clamps. The maximum deviation allowed is fifteen degrees. The instructions for use indicate that if the slope is very large, the switch may not operate properly.

MP PML 1220

The magnetic starter PML 1220 starts and also stops the electric motor, protects it from heavy loads and from phase failure. The PML 1220 starter is irreversible. It runs an electric motor to spin the rotor in a single direction. The PML 1220 starter is enclosed in a plastic housing, has an RTP type relay, which has a protection degree of IP54, the starter has an on and off button.

Magnetic starter 3100

The magnetic starter PML 3100 220 V is a non-reversible device that does not have a thermal protection relay. It has IPOO protection. MP PML 3100 is made of a fixed part and one that moves for circuit switching. The control core makes the device operational.

Magnetic starter 2220

The PML 2220 starter is used to turn on three-phase electric motors with a squirrel-cage rotor with a voltage of up to 660 V at a distance. The starter protects devices when the voltage drops to forty to sixty percent.

The device for household use is used to start electrical equipment that is powered from a three-phase and single-phase network. With thermal relay PML 2220 they protect controlled electric motors from heavy loads over a long period and from the current that appears when a phase is broken. There is a start and stop button on the body.

Device marked 4100 at 63A

Magnetic starter PML 4100 380 V – irreversible, used for remote control of a three-phase motor, which is used in the AC-3 category. It is made from one contactor. The contacts are connected and maintained in this position for a certain time, coping with the forces of the return core. When the current stops passing through the coil or the voltage decreases, the contacts are disconnected, and they can be returned to their original position by pressing the start button.

Device marked 1100

Magnetic starter value 1100

• 1 – starter size,
• 1 – irreversible device without relay,
• 0 – IPOO protection, implementation without control buttons,
• 0 – one auxiliary closed contactor.

MP 1100 is made from a double body, a core, an active and stationary part of a magnetic wire and a contact system, which is made from active and stationary contactors. To see how the PML-1100 device is made, you need to disassemble it.

On the outer part of the magnetic starter mechanism - 1100 its main technical characteristics are written. The device core voltage is 220 V.

The coil at the starter is removed, it can also be used at 380 V.

The PML-1100 device is simply installed on a DIP rail, which has a size of thirty-five millimeters or a panel part for mounting. Dimensions of the 1100 starter: length - seventy-five millimeters, width - forty-eight millimeters, height - eighty millimeters.

Device marked 1230

A device marked 1230 is used to turn on and off asynchronous motors. Additional functions of the device - it is capable of reversing and protecting the engine from heavy loads.

Technical characteristics of PML 1230:

• has a load of 660 V,
• a device marked 1230 has a rated current of 10 A, the rest is written on the device itself,
• engine power – 5.5 kW, 380 V,
• device weight 1230 – 0.32 kg.

Device marked 2100

MP 2100 is a non-reversible device for a current of 25 A, without a relay, with IPOO protection degree. They have a current price and a two-year warranty.

The PML 2100 device starts the motor of categorical use AC-3 by connecting the stator to the network. The power plant stops if you turn off the electricity supply without introducing additional resistance into the circuit. A device marked 2100 can replace other switching devices. The PML 2100 device can replace PME 211 and PME 212.

Device marked 1501

PML 1501 – reversing starter without heat-resistant relay, current 10A. Device 1501 is used to start a squirrel-cage engine at a distance. It is assembled from two contactors - one makes it rotate in one direction, and the second in the opposite direction. PML 1501 without a thermal relay, therefore does not protect the device from heavy loads or currents that occur when one phase fails.

Price overview

You can buy a PML magnetic starter in any city; the price depends on the parameters of the selected model and its type. Also, the price list may vary depending on the specific city:

Before purchasing, be sure to check the device’s quality certificate and carefully study the operating instructions. Many manufacturing companies provide a warranty period for their products. For electrical switches, it ranges from one to three years in most cases.