Breaker type		Rated		Dimensions, mm
Breaker type	type of drive	voltage, kV	breaking current, kA
Multi-volume switches
MKP-35-1000-25

S-35-3200/20200-50B	ShPE-38 or ShPV-35
MKP-110B-1000/ 630-20

	ShPE-46 or ShPV-46
U-220-1000/2000-25	ShPE-44N or ShPV-45P
	ShPE-46 or ShPV-46
Low volume circuit breakers
VMT-110B-20/1000
VMT-220B-20/1000

Breaker type	Rated data		Dimensions, poles mm	type of drive	Quantity and type
Breaker type	voltage, kV	breaking current, A		type of drive	current transformers

MKP-35-1000-25					12 x TV-35/25
					12 x TV-35/40
MKP-110M-630-20					12 xTV-110/40
MKP-1 10M-1000-20					12 x TV-110/40
					12 x TV-110/50
				ShPE-46; ShPE-46P	12 hTVU-110/50
				ShPE-44; ShPV-45P	12 x TV-220/40
U-220-2000-25; U-220-2000-25xl*					12 x TV-220/40
				ShPV-46P; PPG-1	12 x TVS-220/40
				Integrated pneumatic
VMK-110 VMK-220

* Circuit breaker designed for cold areas (chl)

Switch	Rated voltage, kV	Rated current, A	Travel of moving parts, mm	Vzhim (stroke) of contacts, mm	Uniformity of closing and opening of contacts, mm
		600, 1000,1500, 5000
		600, 1000, 1500, 5000

/off,
kA

Electrodynes

Dimensions, m

Weight, kg

type of drive

resistance (amplitude), kA

blackouts

inclusion

AR pauses

Low oil (indoor installation)

Built-in spring

Built-in electromagnetic

Built-in spring

0.09 0.11 0.12 0,14

PE-11, PP-67

2,0; 3,15; 4,0; 5,0

(outdoor installation)

ShPE-12. PP-67

ShPE-38, ShPV-35

ShPE46, ShPV-46

ShPE-44P, ShPV-45P

ShPE-46, ShPV-46

Notes: 1 The table shows the abbreviated designation of the circuit breaker type, without specifying 1tk. The letter part of the designation: V - switch, K - column (for small) or chamber (for tank), E - with built-in electromagnetic drive, M - oil, G - generator or pot, P - suspended version (for small) or substation ( for tanks), U - reinforced; series are designated by one letter: C - "Sverdlovsk", U - "Ural". Digital part - rated voltage, kV, and interrupted current, kA. The letter B after the digital designation of the rated voltage indicates the version with reinforced insulation
The thermal resistance current is numerically equal to / off (except for VGM-20 with /, = 105 kA); the longest allowable short-circuit current flow time. for VKE-10, MGU-20 and for all circuit breakers 110-220 kV - 3 s, for VMPE-10-20 - 8 s, for the rest - 4 s.
Size L is defined along the axis of the pole (phase), size B - across. The numerator shows the values of L and H for normal insulation, the denominator - for enhanced insulation (group B).
In the numerator - the proper opening time of the circuit breaker, in the denominator - total
The total weight is determined with the drive without oil.
For /dyn and closing time for circuit breakers with different options drives in the numerator - values for electromagnetic drive, in the denominator - for pneumatic (for S-35M - for spring).
For the VPM-10 circuit breaker, the trip time with the PE-11 drive is indicated, for the S-35M - with the ShPE-12 drive; with the PP-67 drive, the shutdown time is 0.12 / 0.14 and 0.05 / 0.12, respectively.
MGU-20 for a current of 9.5 kA can only be used with artificial blast cooling.

Types of switches MV

The VMG133 circuit breaker (oil circuit breaker, low-volume, pot) is designed for indoor installation. Movable contact - rod, fixed - socket type. Instead of VMG133, the VMG10 switch was released.

Circuit breakers MGG and MG (oil pot circuit breaker) are low-volume, for high rated currents, they have two parallel current-carrying circuits: main and arc-extinguishing.

When the switch is in the on position, both circuits operate in parallel, with the predominant part of the current passing through the main circuit, which has less resistance. When the circuit breaker is turned off, the main circuit contacts open before the arcing contacts.

The MG35 circuit breaker consists of three vertically arranged poles on one frame, where a drive mechanism common to the poles and boxes for current transformers are also fixed, two per pole.

VMP switches (oil suspended switch) are produced for voltage up to 35 kV in versions for KSO and KRU. The switch is low-volume, movable contact - rod, fixed - socket.

VMK switches (low-oil column switch) are produced for voltage 35-220 kV. The arc extinguishing device is attached to the upper flange, the contact rods pass into it from the bottom up. The circuit breaker is controlled by a built-in pneumatic actuator located at the base.

Switches MKP, Ural (U) and S (multi-volume oil switches) for voltage 35 kV are produced in the form of three-pole devices, each pole of which is assembled on a separate cover and placed in a separate tank. The switch and drive are mounted on a common frame, to which a winch is attached to raise and lower oil tanks.

Switches for 110 and 220 kV are produced in the form of separate poles (tanks). All these circuit breakers have built-in current transformers - two to four per pole.

Actuators for oil circuit breakers

Electromagnetic drive

The traction characteristic corresponds to the reaction force characteristic of the oil circuit breaker. A powerful source of direct (or rectified) current is required. The cross section of the supply cables, selected according to the voltage drop condition, is significant. Due to the high inductance of the electromagnet windings, the time

Oil switches 45 switching on is large (up to 1 s). Alternating current electromagnetic drives are also produced. They are mainly used for switches of small power.

Spring drive

The energy required to turn on is stored in a powerful spring, which is wound either by hand or with the help of an engine. low power(up to 1 kW). The pulling force decreases towards the end of the engagement stroke due to the reduction in the deformation of the springs. The speed of the drive allows (automatic reclosing) and (automatic transferring).

The design advantage of the drive is the absence of a powerful source direct current, tanks with compressed gas, valves and pneumatic facilities. The disadvantage is the possibility of application only for relatively small low-volume circuit breakers up to 110 kV.

Pneumatic drive

Energy is stored in a reservoir compressed air which drives the piston in the cylinder. Air consumption allows 5-6 switching operations without pumping. Traction increases almost instantly and changes little. The traction characteristic can be adjusted. The short closing time makes it possible to use the drive for the most powerful circuit breakers. The disadvantage is the need to take special measures to ensure normal operation at low temperatures.

Pneumohydraulic drive

The accumulation of energy required for switching on is carried out by compressing a gas (usually nitrogen). The use of hydraulics makes it possible to significantly lighten the movable part of the circuit breaker and obtain a compact mechanism. The on-time may be shorter than with pneumatic actuators. The drive allows easy manual activation.

The temperature range of normal operation is practically unlimited. Under certain conditions, may apply manual drives, carrying out the switching on and off of the switch by the action of a hand on the lever or flywheel of the drive; in addition, shutdown can be automatic or remote. A fully assembled and revised oil circuit breaker is checked by the installation staff for the simultaneous closing and opening of the contacts, the stroke of the moving part, the pressing and the stroke of the contacts are measured.

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At present, at medium voltages, the technology of arc quenching in vacuum dominates over technologies using air, SF6, or oil. Generally, vacuum circuit breakers are safer and more reliable in situations where the number of normal and short circuit operations is very high.

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High-voltage circuit breaker equipment for each company involves a significant investment. When the question arises of their maintenance or replacement, it is necessary to consider all possible options.

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GENERAL INFORMATION ON THE DESIGN OF BM-35 TYPE SWITCHES and MCP-35

Oil circuit breakers type BM-35 are manufactured for a rated current of 600 A with a maximum breaking power of 400 thousand kVA. Until 1941, switches were produced in the version VM-35-N for outdoor installation and VM-35-F for indoor installation. Circuit breakers VM 35-F differ mainly in inputs for indoor installation and smaller distances between phases. Currently, the manufacturer produces switches of the VM-35 type either with an electromagnetic drive (the designation of the VMD-35 switch) or with a manual automatic drive (the designation of the VM-35 switch). If necessary, iBM-35 circuit breakers can be coupled with load or spring-load drives.

Oil circuit breakers of the MKP-35 type are produced for rated currents of 600 and 1000 A with a maximum breaking power of 1000 thousand kVA. MCP-35 type switches are connected to ShPE-2 or ShPS-30 electromagnetic actuators.

Switches of types VM-35 and MKP-35 are designed for outdoor installation, but can also be installed indoors. The main technical data of the switches are given in Table. I.

In the switched on circuit breaker, the circuit passes from the upper contact tip of the input along the current-carrying rod to the fixed contact, to which the movable contact is pressed. Through it, the current passes to the second fixed contact and then to the upper contact tip of the other input. The moving contact is connected to the circuit breaker drive mechanism by an insulating rod passing through a Bakelite guide tube.

When the circuit breaker is opened, the drive mechanism moves the moving contacts down under the action of the opening springs, and the arc is extinguished simultaneously in two arc chutes. The moving contacts of the disconnected circuit breaker are located in the bottom burner near the bottom of the tank. At the same time, reliable insulation is provided by oil.

When the circuit breaker is closed, under the action of the drive, the opening springs are stretched and at the same time the moving contacts are raised, closing with the fixed ones.

Table 1

Electrical characteristics	VM-35	MKP-35
Rated voltage, sq.	35	35
Greatest operating voltage, sq.	40.5	40.5
Rated current, a	600	600
		1 000
Limit through current, ka:		24
effective value	10	24
a if oud slabs	17,3	45
*thermal stability current, ka,* for**
time span:		24
1 sec	10	24
5 sec	10	16,5
	7,1	11.7
Breaking power limit, thous.
**qua,at rated voltage, kv:**		1 000
35	4ii	1 000
25	230	570

Mechanical Character Geeks	VM-35	MKP-35
Rotation angle of drive shaft
nism, hail	85+5	72
Gap between lever and stop at
switch on position,
	1,5-2	1,5-2
Gap between bar and guide	1-1,5	1-1,5
mi, mm	1-1,5	1-1,5
camera height, mm	120	-
Control dimensions for installation	80 + 1	90±1
measures (distance from the phase axis), mm . .	80 + 1	90±1
The course of moving contacts, mm. . .		270-280
Same for release switches up to
1941 mm	200-210	-
*Stroke in working contacts (press), mm.* .**	12+2	16+1
The same release switches until 1941,
mm	10+2	-
Pressing contact springs, to G. .	17	-
The variance of the closure of contacts,
*mm:*		2
in phase	2	2
between phases	4	4
contact resistance,	550	350

Mechanical characteristics	VM-35	MKP-35
shutdown speed, m se/s: at the time of contact opening. .	0.9-1.2	1.5-1.7
at the moment the contacts leave the camera	2.2-2,9
maximum - . .	2.4-3.1	2.8-3.5
turn on speed, m, "sec	Depending on the tin
	drive
The weight, kg: circuit breaker (without drive), not filled with oil	900	1 900
oils in three phases	300	800
circuit breaker with oil and drive	1 300-1 350	3 100-3 400

General form switches is shown in fig. 1 and 2.

Each circuit breaker phase is mounted on its own cover and has a separate tank filled with insulating oil. Three phases of the circuit breaker are mounted on a common welded frame. Phase covers are connected by pipes. On the frame there is a drum with a cable for lowering and raising the tanks. There is a winch on the drum shaft, and a cable is applied to the rollers of each tank. The location of the parts of the switch phase is shown in fig. 3 and 4.

Rice. 1. General view of the switch VL1-35.

Rice. 2. General view of the MKP-35 switch.
1 - cover; 2-tank 3 - input; 4 - frame; 5 - connecting pipe; 6- drum; 7 - winch; 8 - a cabinet with a drive.

Rice. 3. Section of the phase of the switch VL1-35.
1 - drive mechanism; 2 - oil indicator; 3 - guide pipe; 4 - screen; 5 - moving contact; 6 - oil drain valve; 7 - input; 8 - cover; 9 - current transformer; 10 - arc chute; 11 - tank; 12 - shaft;
13 - cotton wool bearing; 14 - connecting plug; 15 - input casing; 16- retaining ring; 17 - fixed contact; 18 - tank insulation.

Rice. 4. Section of the switch phase about
MCP-35.
1 - drive mechanism; 2 - oil indicator-1el; 3 - guide pipe; 1 - screen;
5 - moving contact; 6 -- MafocnvcK valve; 7-input, “-cover; 9-current transformer; 10 - arc chamber; 11 - tank; 12 - frame; 13 - Bottom part drive cabinet;
14 - plug through which the rod is screwed into the end of the rod when removing vibrograms of the speed of the rod;

Size: 42.78 MBChapter: Date: 02/21/2017Downloads: 115

We have collected the maximum information and documentation on the oil circuit breaker MKP-110 (M, B) - passports, instructions for spare parts and other documents.

Factory documentation, passport, instructions and other documents for MCP-110

MCP 110 decoding- Oil Chamber Substation,

110 - rated voltage, kV,

1000/630 - rated current, A

20 - rated breaking current

U - Climatic performance

Specifications MKP-110-M (MP):

Rated operating voltage, kV
Maximum operating voltage, kV
Rated current, A
Breaking current, kA
Breaking power, MVA
Limit through current: effective value, kA peak value, kA
Thermal stability current, kA for time interval: 1 s 5 s 10 s	29 18,4 13
Turn-off time at rated voltage, s
Arc extinguishing time in the chamber, s
Own disconnection time (since the moment when the command was given to open the contacts), s
Shunt follow current quenching time, s	no more than 0.08
Cycle time of instantaneous reclosure (from the moment the command is given to disconnect until the contacts close again), s: for switch M for MP switch	0,7-0,8 0,5-0,6
Weight of MKP-110-M circuit breaker with drive and 12 current transformers without bushings and oil, kg

Factory passport MKP-110-1000/630-20U1 and 110M-1000/630-20U1, 110-MP

Circuit breakers of the MKP-110-1000/630-20U1 and MKP-110M-1000/630-20U1 types are designed for switching operating currents and short circuit currents. in electrical networks. The switch is installed on open switchgears (OSG) of stations and substations of power systems for a rated voltage of 110 kV alternating current with a frequency of 50 or 60 Hz.

Operating conditions.
The height above sea level is not more than 1000 m, the ambient temperature is not higher than +40 (at an average daily temperature not higher than +35 degrees C) and not lower than minus 40 degrees. C (occasionally minus 45C), wind speed in the absence of ice - up to 40 m / s, with ice with an ice crust thickness of up to 20 mm - up to 15 m / s, wire tension in the horizontal direction in the plane of the inputs - up to 100 kg * s.
The circuit breaker is controlled by a common for three poles suspended DC drive type ShPE-33

Difference between MKP-110 and MKP-110M

The letter M denotes a version with separate tanks, without M - a version on a common frame.

Switch type MKP-110-1000/630-20U1 is a three-pole device, the poles of which are mounted on a common welded frame and rigidly connected. The switch is installed on a standard foundation.

Switch type MKP-110-1000/630-20U1 is a three-pole device consisting of three separate poles connected by spacers.

Each circuit breaker is equipped with built-in current transformers of the TV-110-20U2 or TVU-110-50U2 type, climatic version U, location category 2 according to GOST 15150-69, as well as BMPU/15 - 110/1000U1 reinforced bushings of category B.

MKP-110B-1000/630-20U1. Operating instructions and technical description. 2СЯ.025.056. THEN

The circuit breaker consists of three poles connected into a single unit with the help of studs, pipes and connecting rods located in them. The pole is a tubular shape tank with squares welded to it for lifting and attaching the tanks to each other with connecting studs.

The set of nodes is designed to upgrade a high-voltage circuit breaker in order to increase its breaking capacity from 3500 to 4750 mVA, the breaking current limit from 18.3 to 25 kA in a two-time automatic reclosing cycle at a rated current of 1000 or 600 A.

Set of units M-I-MKP-110.5-35.5. The passport. 8ES-00.00.000 PS

Set of nodes M-I-MKP-110.5-35.5 for the modernization of high-voltage oil circuit breakers. This set of units is designed to upgrade the MKP-110-5 circuit breaker in order to increase the rated breaking current up to 35.5 kA.

Modernization consists in replacing chambers and resistors with new ones that differ in design, while changing the length of the rods.

Details of reinforcement MKP-110M. The passport

Instructions for strengthening switches with UPI cameras.
The increase in the limiting tripping current was achieved through the use in new chambers effective system multiple longitudinal blast with a symmetrical arrangement of exhaust slots and installation of spring-piston unloading tanks in the chambers. The use of tanks makes it possible to limit the pressure in the chambers when high short-circuit currents are switched off, which reduces the load on the inputs and the circuit breaker foundation.

More materials on the switch:

Refurbishment Acceptance Program