XGN2-12 High voltage AC switchgear fixed type metal-enclosed switchgear applied to the 3.6kV~ 12kV three phase AC 50/60Hz system to receive and distribution power energy The device is extensive used for industry. civil cable looped network and terminal power supply, especially for power receipt and distribution for urban residential community, secondary mini-power substation, switching station, industrial and mining enterprises, shopping mall, airport, subway, small and medium power station, hospital, stadium, railway, tunnel etc.. The equipment is the newest metal closed switchgear use air insulation, and it has many advantages such as: simple structure, flexible operation, easy installation, reliable interlocking and so on.
Item Unit Rated parameters
Model of circuit breaker and isolating switch
ZN28-12 VDS-12 Gn30-12G
Rated voltage KV 12
Rated current A 630 1250 630 1250 630 1250
Rated short-circuit
Breaking current KA 20 31.5 20 31.5
Rated short-circuit
Marking current KA 50 80 50 80
Rated dynamic current maximum KA 50 80 50 80 50 80
4S rated thermal stability current KA 20 31.5 20 31.5 20 31.5
Rated insulation
level Power-frequency
withstand strength
in 1 min KV interphase and opposite type: 42
fracture type: 48
Lightning-impulse
withstand strength interphase and opposite type: 75
fracture type: 85
Outline size (H*W*D) mm 2300*900*1000 2300*800*1000.
1. Introduction
KYN28-12 indoor metalclad withdrawable switchgear is designed to be complete distribution equipment with three-phase A.C. singe busbar and single busbar section system having a rated voltage of 3.6~12kV and rated frequency of 50Hz.The switchgear is mainly employed in receiving and distribution of power energy from the network as well as starting of large-sized HV motors. In addition, the switchgear is provided with controlling, protection and monitoring functions. The switchgear conforms to IEC 298, GB 3906, DL/T404-91 and other standards. The switchgear itself owns five prevention functions such as prevention of misoperation of circuit breakers, prevention of pushing or pulling truck with load, prevention of closing earth switch under voltage, prevention of supplying power when earth switch is at the earth position and prevention of entering the electrical separation zone by accident. The switchgear selects not only VS1 vacuum circuit breakers but also ABB made VD4 vacuum circuit breaders, thus recogninzed as power distribution equipment with excellent performance.
2. Working condition
2.1 altitude: 1000m
2.2 temperature: -10celsius degree ~+40celsius degree
2.3 relative humidity: daily average value 95%, monthly average value 90%
2.4 saturated vapor pressure: daily average value 2.2 10-3MPa, monthly average value 1.8 10-3MPa
2.5 earthquake intensity: less than 8 degree
2.6 protect the product from fire, explosion, earthquake and corrosion atmosphere.
3. Main features:
3.1. the enclosure is completely adopts the aluminum-zinc alloy coated steel sheet, which are machined and bent by machine tool and then bolted;
3.2. all the operations are under the door closing condition
3.3. with high protection category, can prevent intruding of sundries and insects
3.4. simple efficient 5 protection function can prevent operating incorrectly
3.5. the removing compartment of the switchgear may be assembled with VS1(ZN63A) or VD4 vacuum circuit breaker according to customer s demand
3.6. the replacing of VCB is simple and the interchangeability of truck is good.
3.7. the cabinet body can be installed against the wall, so the maintenance can be made in front of the cabinet and the cover area can be reduced too.
3.8. cable compartment has enough room, can connect muti-cable
3.9. high speed earthing switch is used for grounding and loop short circuit
3.10. VCB vault, relay vault and cable vault can add extra heater separately according the demand of customer, in order to avoiding condensation pheromone and corrosion.
3.11. VCB vault and cable compartment can add extra lighting device separately, in order to convenient maintenance.
4. Main technical parameters
4.1 main technical of vacuum switchgear
item unit parameter
Rated voltage kV 3.6 7.2 12
Rated current A 630 1250 1600 2000 2500 3150
Rated frequency Hz 50
Rated short-time withstand current kA 16 20 25 31.5 40
Rated peak withstand current kA 40 50 63 80 100
Rated power-frequency withstand voltage kV 42/1min
Rated lightning impulse withstand voltage kV 75
Rated duration of short circuit S 4
Degree of protection IP4X
4.2main technical parameters of vacuum circuit breaker
Item Unit Parameter
Rated voltage kV 12
Rated current A 630 1250 1600 2000 2500 3150
Rated short circuit breaking current kA 25 31.5 40
Rated short-time withstand current kA 25 31.5 40
Rated short circuit making current kA 63 80 100
Rated short-time power-frequency withstand voltage kV 42/1min
Rated lightning impulse withstand voltage (peak) kV 75
Rated short circuit duration S 4
Closing time (rated voltage) ms 35 t 70
Opening time (rated voltage) ms 20 t 50
Rated breaking times of short circuit times 50 (40kAis 30)
Mechanical life times 20000
4.3main technical parameters of operation mechanism
Item Unit parameter
Rated operation voltage Opening coil V DC220/110
AC220/110
Closing coil
Rated operation current Opening coil A (DC/AC)220/110V: 0.9/1.8
Closing coil (DC/AC)220/110V: 1.0/2.0
Power of energy storage motor W 70
Rated voltage of energy storage motor V DC220/110 AC220/110
Energy storage time S 15
5. Structure instruction
The basic structure of switchgear panel comprises the panel itself and a removing part (truck). The enclosure and clap-board of the switchgear is bolted with Al-Zn alloy coated steel.Enclosure protection degree of switchgear is IP4X, and the protection degree of every vault is IP2X.
800/1000*1500*2300mm.
1. DYQ3 series liquid resistor starter is a new starting device for improving the starting capability of large and medium slip ring asynchronously and low-voltage squirrel-cage motor. The old-fashioned starting instruments ----adjustable rheostat, oil- immersed rheostat and cast iron rheostat ---have many disadvantages such as: having strong impact current (about 3-5 times for rated current in general) and cant bring a ideal effect etc., but all of the disadvantages can be overcome by the DYQ3 series liquid resistor starter. The DYQ3 series is used a special liquid resistor to be connected in series to the rotor circuit of large and medium slip ring motor, the liquid resistor get to work when the motor starting and it can automatic, stepless and continuous removal during the preset time, then the motor can start smoothly under ideal starting current condition. Eventually the motor can accelerate balanced. This plays an important role in protection of motor, electric equipment, power system and saving electricity. As well as the well-designed of system starting, stop, error protection, communication and display, making the liquid resistor starter have high degree of automation, small starting current (less than 1.3 times for rated current in general), can start successfully when power system have low voltage, and reducing the capacity of transformer remarkably. So DYQ3 series liquid resistor starter is the most ideal starting equipment for heavy load device such as: ball crusher, hoister, compressor, blower and water pump etc.
2. Model explanation
3. Technical parameters and application scope
3.1. Motor power: 50-6000KW (slip ring motor)
3.2. Motor current: 200-2000A (slip ring motor)
3.3. Motor voltage: 200-2200V (rotor voltage of slip ring motor)
3.4. Starting time: 20s. 25s.30s. 50s (can be adjusted)
3.5.Continual starting times: 3-5
3.6. Starting current:less than 1.3 times for motor rates current (slip ring motor)
3.7. Normal working temperature of liquid resistor: 0-60
3.8. voltage: three-phase 380V, 3000V, 6000V, 10000V, 50HZ
3.9. Air temperature range: -35-50
3.10. Sea level elevation: 4000m
3.11. air relative humidity: 85
3.12. The surrounding environment must have no threaten things of explode and air or dust which can corrode metal and destroy insulation
3.13. The installed site must have no obvious impact of vibration
4. Advantages
4.1. Starting characteristics are more prefer than adjustable rheostat, oil- immersed rheostat and cast iron rheostat
4.2. Have little starting current: less than 1.3 times for motor rates current (slip ring motor)
4.3. Continual starting attempt can reach 3-5 times
4.4. Can start smoothly: no mechanical shock to equipments, can prolong the service life of equipment and motor
4.5. Have simple and safe frame, all operation can be completed automatically, have convenience installation and maintenance
5. Working principle
A special liquid is used for DYQ3 series liquid resistor starters resistor. In series of motor rotor circuit, polar plate is connected in a special designed liquid resistance box. When the motor starts, the liquid resistors resistance gradually decrease by moving the relative position of polar plate which drive by a small power servomotor, then the motor can start smoothly.
6. Configuration and installation size
6.1 configuration£¨picture 6
6.2 installation size
Structure size of one-piece
model Outline size (mm) Installation size(mm)
L W H E F ¦ÕD
DYQ3£600 800 760 2000 800 760 18
DYQ3£1000 800 760 2000 800 760 18
DYQ3£2000 1060 960 2000 1060 960 18
DYQ3£3000 1300 1000 2200 1050 850 18
DYQ3£4000 1300 1200 2200 1150 940 18
7. Installation and debugging
7.1 installation and connection:
7.1.1. Control cabinet and resistor cubicle should be installed on the cement platform in which the water can easily drain; we should ensure that cabinet perpendicular to the horizontal and cabinet be fixed on the platforms channel steel. There should be cable channel under the control cabinet.
7.1.2. Put the electric cable (the cable should load enough current) of motor rotor in the starter control cabinet and connect it according to electric principle scheme, then connect the interlock control line.
7.1.3. Check the correction of line and thetightness of fastener.
7.1.4. Check the insulation resistance between liquid resistor and ground, the resistance should more than 5M¦¸
7.2 Debugging:
7.2.1. Check the condition of liquid resistance boxs site and polar plates movement. Pick up the moving polar plate directly without liquid resistor, check its flexibility, if the result is no so good, should regulate the site of the liquid resistance box.
7.2.2. When primary circuit open in main motor, once closing the QF1 in start cabinet, the polar plate should move towards to reset key, or QF1 should be opened immediately, then exchange any two power lines of A, B, C three-phase, switching the test button SA, check the start working condition normal or not, then cut off SA, check the starter stop condition normal or not.
7.2.3. Compound liquid resistor
7.2.3.1 Pour pure water into the resistance box until its volume reach 80% of the boxs
7.2.3.2 Put three bags powder in three separate grooves, then add pure water again and make the liquid level keeping 5mm distance between the tank cap.
7.2.3.3 Switching the lifting motor, let polar plate go up and down several times, so that the liquid resistance can mix excellent.
7.3 Test the machine:
Observe that whether the start current less than 1.3-3.5 times of rated current or not, if it is, the machine can put into use successfully; if not, the concentration of liquid resistance should be regulated, and please refer to the use and maintain parts to learn the detailed regulated methods.
8. Operation:
8.1 Startup
(1). Closing the isolating switch for power supply of primary circuit
(2). Energizing the starter, then the light of power and reset are illumed, polar plate reset automatically, then the light of allowing start is illumed, this indicate that the machine can start smoothly
(3). Push the charge button, after charge process ending, push the start button, then the main motor start work and allowing start light is turned off, start light is illumed. When the start process ending, the machine start work automatically, then start light is turned off and the run light is illumed.
8.2 Close down
Push the stop button, then the motor can stop work automatically, and the starter can reset automatically, so that it can prepare for next starting
9. Use and maintain
If the power light is illumed, but allowing start light is not illumed, please check the liquid level, limit switch, contactor and elevator until allowing start light is illumed, then can go on starting.
When the machine need stop no matter with what reason, please cut down the main switch. Its forbidden that switchoff the starters power when the main motor is also working.
When overhaul is ending, starter empty-load test like start, run etc. should be processed under main motor is not started, in order to confirm everything is normal, then the starter can be used. Generally the start controller can be stopped automatically when something wrong, so it can be maintained without delay. Please pay special attention to checking the limit switch- SX1 or SX2 is working normally regularly (half a year), and checking the level of liquid resistor regularly (half a year), if it is too low (less than 50mm), the liquid resistance or water should be addedimmediately, in the process of adding, please prevent the flashing of liquid, otherwise the insulation will be damaged. Change the liquid resistance regularly (4 to 5 years), at the same time clean the polar plate and the insulated box, the specific techniques are as follow: firstly remove the oxide on the polar plate using diluted hydrochloric acid, then clean it with water; clean the box with water and dry it in the air first, then use PVC anti-corrosion glue coat the surface of polar plate several times, generally the box is not suitable for disassembly cleaning.
Please check the condition and the contact of KM1, when the running current of main motor is too weak or the start liquid temperature is too high (more than 60 ) under the condition of starter empty-load test is normal; if the start current is too strong, pure water should be added because the liquid resistance is become weak.
Caution: the overhaul of the starter must be operated with technician!
Please preserve this instruction well, in order to making your overhaul easy. If you have something difficult during overhaul, please contact with us without hesitation, we will give our technical assistance for you at any time!
10. Order instructions:
10.1. Please provide the motor parameters, such as model, power, rated voltage of stator V1e, rated current of stator I1e, rated current of rotor I2e and open circuit voltage of rotor V2e.
10.2. single starter can be provided if control circuit exist.
10.3. Special demand should be marked out in the contract.
PS: Our company can produce start controller which use on special motor.
800*760*2000mm
960*1060*2000mm
We can also make the size special for your case.
1. Summarize
1.1. DYQ4 series liquid resistor starter (for short starter as follow) is a new starter prepared for improving the starting property of high voltage squirrel-cage alternating current asynchronously motor. It can induce the impact which is brought to motor starting current on power system, and improve the start smoothness with equipment by voltage-reduced starting by way of liquid resistance. It can protect the motor avoid harm by over-load, phase failure, short circuit etc.It is the prefect starting production instead of auto-induction voltage-reduced starter.
1.2. Model explanation
2. Working principles:
The device is composed of resistor, high-voltage soft start controller, isolating cabinet, changeover cabinet and star point controller. We supply in full sets. The device can start motor and play a protected action on motor start process, when connect it in motor start circuit.
This resistor is composed of three phase balancing resistor which have negative temperature characteristic, when the current is past through resistor, the temperature of resistor gradually increase and its resistance gradually decrease, then the terminal voltage of motor gradually raise and the start torque gradually increase, so the motor can start smoothly and the start current can be decreased.
3. Application scope:
DYQ4 series high-voltage resistance soft starter is suitable for large and medium high-voltage squirrel-cage asynchronous motor or asynchronously-started synchronous motor, to voltage-reduced starting. The motor which start by this device have soft start characters like withlow and constant starting current, torque increased gradually etc. In start process, without current and mechanical shock, as well as have little impact on power system, and without electromagnetic interference. It is the prefect production instead of starting reactor auto-induction voltage-reduced starter. And compare with high-voltage inverter soft starter, DYQ4 have many evident advantages: simple operation, withoutmaintenance and no pollution of harmonic wave etc.
4. Advantage:
4.1. constant current, soft start: the starting current is 2.5-3.5 times as motor rated running current, avoid generating more heat while motor starting, can reduce the demand of transformer capacity with motor heavy load start, reduce no-recurring investment
4.2. The wave of the power system voltage and load cant influence the start process, it can start successfully at one time.
4.3. smooth starting, without shock to machinery, can prolong the service life about 30% of machinery and motor.
4.4. have large thermal capacity, and the continual starting attempt can reach 3-5 times
4.5. have little impact on power system, have small voltage drop during starting
4.6. have high power factor during starting
4.7. without harmonic wave pollution
4.8.start with static changeable resistor,safety and reliability
4.9. simple operation, maintenance free
DYQ4 with standard design, have the advantage of low and constant starting current , have small voltage drop and big power factor during starting, without pollution of harmonic wave and simple, simple, safety and reliability etc.
5. Technical parameters
Model Motor powerKW Rated voltageKV Rated start
currentA style
DYQ4-630 500-630 3 6,10 Integrated
style
DYQ4-1000 800-1000 3,6,10
DYQ4-1250 1000-1250 3,6,10
DYQ4-1600 1250-1600 3,6,10
DYQ4-2000 1600-2000 3,6,10.
Split style
DYQ4-2500 2000-2500 3,6,10
DYQ4-3200 2500-3200 3,6,10
DYQ4-4000 3200-4000 3,6,10
DYQ4-5000 4000-5000 3,6,10
DYQ4-6000 5000-6000 3,6,10
DYQ4-8000 6000-8000 3,6,10
DYQ4-12000 8000-12000 3,6,10
DYQ4-15000 12000-15000 3,6,10
DYQ4-18000 15000-18000 3,6,10
6. Working condition
(1). The power source must use three-phase four-wire system of 380/220V/20A, and the wave of voltage mustnt exceed ¡¾15% of rated voltage.
(2). temperature: from -5celsius degree to 60 celsius degree (the average temperatureless or equal55celsius degree within 24h)
(3). relative humidityless or equal90%
(4). elevationless or equal2000m
(5). The installed site mustnt have obvious impact of vibration and the gradient of uprightness mustnt exceed 5
(6). conducting dust and corroding air are not allowed
(7). without threaten by fire and explosion
PS: A heater is needed when the temperature less than -5 celsius degree in a long period, this situation should be marked up when you order.
If the elevation exceeds 2000m, please let us know when you order.
7. Outline size
The starter has a cabinet framework, protection level is IP20. The outline size of unitary structure devices are as follow table
Model Outline size mm Installation size mm
A B C E F ©ªd
DYQ4-630 1400 1200 2300 1240 1040 16
DYQ4-1000 1630 1230 2200 1540 1140 16
DYQ4-1250 1800 1230 2300 1640 1040 16
DYQ4-1600 1800 1230 2300 1640 1040 16
DYQ4-2000 1830 1230 2300 1840 1040 16
DYQ4-2500 2030 1230 2300 1840 1040 16
DYQ4-3200 2730 1230 2300 1840 1040 16
DYQ4-4000 2730 1230 2300 3400 1040 18
DYQ4-5000 2730 1230 2300 3400 1040 18
DYQ4-6000 3900 1600 2300 3400 1240 18
DYQ4-8000 4200 1600 2500 3400 1440 18
DYQ4-12000 4800 1800 2500 4600 1640 18
DYQ4-15000 5100 2000 2500 4900 1840 18
DYQ4-18000 5100 2000 2500 4900 1840 18
8. Transit and hoisting
8.1. According the customers demand, the pack can use simple packing, common packing and exported packing
8.2. Lie down the resistor during transit is forbidden, because it can damage the driving medium and insulated box (the hoisting method please according to picture 1).
8.3. The collision must be avoided when hoisting the single cabinet, and the hoisting must according the storage and transportation mark
8.4. Check the condition of packing before opening, if it was damaged seriously, please negotiate with traffic company or contact with us.
8.5. the steel wire should be used to hook in the diagonal rings when lifting. picture 2
8.6. The gradient must exceed 70o during hoisting.
9. Installation condition
9.1. The liquid resistor should be installed on the cement platform in which the water can easily drain
9.2. A horizontal ground is needed for installing, and the cabinet must perpendicular to it.
9.3. The liquid resistor should be installed right above the cable channel, and steel channel base must be matched with the resistor.
9.4. 3,2.5+1,1.5mm2 cable is used for control power supply, and connect it from A,B,C,N of terminal board X1 to starter, then according to the drawing, connect the liquid starter and control cabinet, and the interlock control wires between DCS systems or other central control systems
9.5 connect the green and yellow grounding lines to ground terminal.
10. Use and maintenance:
10.1. Check the condition of resistor before each start
10.2. Test the insulation resistance between ground regularly, the test result must less than 500M¥Ø using tramegger with the range of 1000V
10.3. Add water for the resistor regularly.
11. Ordering instruction:
11.1. the motors model, power, voltage, current, locked-rotor current, rotation rate, the times of start torque, the maximum times of start torque, the kind of motor and load GD2, the minimum capacity of short circuit for generatrix, the variation curve of load resisting moment, the name of matching equipment and the demand of duty type
11.2. the main circuits plan of high voltage starting for the using motor,the arrangement diagram of cabinet combination, and the layout chart of power distribution room
11.3. the surface color of cabinet
11.4. If the installation site has a special geographical condition like sea level elevation exceed 2000m, the environment temperature often blow 0celsius degree, coastal area and salt spray area, please let us know the situation in advance.
11.5. If you have special demand, please contact with us (one starter control two or more electromotor).
1500*1350*2000mm
1550*1460*2650mm.
