Watchdog dividing line circuit breaker OEM/ODM NKZW32F introduction on the pillars  

Lighter weight maintenance more convenient 100 kg = 70 kg + (NKZW32 ontology outdoor metering box, 30 kg)

Distribution network watchdog dividing line circuit breaker in 10 kV feeder aerial application can greatly reduce the trouble-free lines on the road of collateral forced outage, narrowing the scope of failure blackout, shorten the blackout time users, so as to improve the power supply reliability of the user.
 

 

 

 

3 line circuit breaker fixed value and substation protection setting for coordination with the problem

3.1 for the neutral point grounding or via arc suppression coil grounded system

Interphase short circuit current action constant value: action time limit should be made to match the substation for the action time of the reclosing protection, transient fault protection after the automatic user side, quick disconnect overlap to restore power. Due to the Beijing area 10 kV feeder protection reclosing whole as 1 s commonly, can choose 0.3 ~ 0.5 s.

Single-phase grounding current action constant value: the zero sequence current fixed value, according to overhead line cross section and length, escape routes should be considered for capacitive current. Due to the neutral point grounding or via arc suppression coil grounding system, the single-phase grounding fault happens, transformer substation line protection tripping, signal grounding, only allowed to run short indirectly. In order to judge fault, and the boundary of circuit breaker action time, should consider to avoid the instant grounding deadline, and action again after substation grounding signal trip, can choose 6 ~ 8 s.

3.2 for the neutral point via small resistance grounding system

Interphase short circuit current action constant value: same as above.

Single-phase grounding current action constant value: neutral point via small resistance grounding system, due to the transformer substation of 10 kV overhead line general configuration, two pieces of zero sequence protection for a period of 120 a, time limit of 0.2 s; Two 20 a, time limit for 1 s. Therefore, while dividing line circuit breaker of the zero sequence current fixed value and action time, should be made to match the substation zero sequence protection, 0 s.

In 4 line circuit breaker running and maintenance problems should be paid attention to

Appearance should be regularly check line circuit breaker ontology and controller are in good condition; Dividing line circuit breaker state indicating whether it is right, whether running state energy storage; Porcelain crack, damage; Dividing line circuit breaker lead spacing is in accordance with the code requirements; Each part connection fastening, do you have any overheating phenomenon; Lightning arrester is in good condition; Grounding device in good condition, do you have any rust; Controller lights flashing warning.

Check whether the line circuit breaker is rotating or grounding resistance measuring whether extended, dividing line circuit breaker users in internal equipment installed and trouble-free, after the success of the substation feeder circuit breaker tripping overlap, should be timely organization find line fault points, found brake line circuit breaker points, should be timely reported to the administrative departments of electric (dividing line circuit breaker, the controller failure indicator continue flashing 48 h).

Should be checked regularly arrange for clearing dividing line circuit breaker, the inspection period and circuit board rod inspection cycle is the same. In principle dividing line circuit breaker operation more than 10 years should schedule rotation maintenance.

5 line circuit breaker installation problems should be paid attention to

Dividing line circuit breaker device can only be installed on the branch line or the end of the line, shall not be used string, as shown in figure 2.

Figure 2 line circuit breaker installation schematic diagram

Dividing line circuit breaker as the boundary between power companies and users first circuit breaker, the general installation in 10 kV overhead distribution lines feeder first tree stem, lateral load by the user.

When users into line for overhead line, separating the load side of the circuit breaker with suspension insulator suspension overhead insulated wire is introduced into, the user first fundamental pole power supply side insulated wire installed earth wire hanging ring, keep unipolar isolating switch.

When users into line for cable line, from the boundary between the load side of the circuit breaker with suspension insulator suspension overhead insulated wire leads to the user the first fundamental pole, the connecting cable directly. Users in the first part pole ring side insulated wire installed hanging earthing wire of power, no longer drop fuse installation, retain unipolar isolating switch.

Installed line circuit breaker ontology, relevant departments should organize before insulation resistance testing, and power frequency withstand voltage test and test; Insulation resistance measurement standards: use 2500 V wave measuring insulation resistance by megger, dividing line circuit breaker, relatively and fracture Ω 1000 M or higher. Power frequency withstand voltage test standard: dividing line circuit breaker, relatively and fracture: 42 kV, 1 min. Dividing line circuit breaker closing operation surface and instructions should be toward the outside.

Dividing line of the circuit breaker controller installation: controller of installation height should not be less than 2.5 m, the switch control cable (with attachments) controller controller end plug into the controller panel jack, the other end insert boundary dedicated socket circuit breaker base, plug should be tighten. Control cable rope body end, bend and straight segment every 1 m should use 2.5 was fixed, single strands of copper core insulation wire twist plait five laps. Cable should be horizontal flat vertical, should not be skew.

6 the conclusion

Dividing line circuit breaker application in the 10 kV overhead lines on the road, greatly reduces the trouble-free line joint forced outage, narrowing the scope of failure blackout, shorten the blackout time users, thereby improving the user power supply reliability.

Dividing line circuit breaker better solve the interphase short circuit occurred 10 kV substation, and quickly locate fault point when single-phase earth fault.An overview,

NKZW32 type outdoor high voltage vacuum circuit breaker is used for three-phase ac 50 hz, rated voltage of 12 kv outdoor distribution equipment. Is mainly used to open and close in the power system load current, overload current and short circuit current. Suitable for urban and rural power grid, substations and overhead distribution system of industrial and mining enterprises for protection and control. Especially suitable for frequent operation.
NKZW32 type of outdoor high voltage vacuum circuit breaker adopts international advanced three pillar structure, three-phase has separable, and avoid the interference. Vacuum arcing chamber encapsulated within the insulation cover, insulation cover and the casing material chooses import outdoor epoxy resin through advanced APG process of solid shape, as a whole, a conductive part of the insulation state completely is not affected by the external environment, improve the resistance to the environment, to prevent any condensation as damp, filthy and the damage to the insulation performance. Modular design of spring operating mechanism of small size, simple structure, light weight, accurate and reliable, completely suitable for the requirement of long life and maintenance-free operation.

NKZW32 type of outdoor high voltage vacuum circuit breaker with super seal performance and anti-corrosion performance. A bad product can resist soaking in the bottom, suitable for use in low-lying areas. Circuit breaker box adopts the dacromet surface treatment after three outdoor paint coating, epoxy resin can effectively prevent rust for a long time. Circuit breaker box can also be made of stainless steel material to fundamentally prevent corrosion phenomenon.

NKZW32 type of outdoor high voltage vacuum circuit breaker with various configurations, you can configure the LHJW12A, B outdoor zero sequence current transformer (acquisition zero sequence, protection with current) and a flow velocity controller fault protection, zero sequence protection; You can configure the one-piece isolating switch to ensure reliable mechanical interlock, and can be mounted to the arrester; You can configure the intelligent controller to realize current or voltage control and protection, meet the requirements of line distribution network automation.
Second, the model formulated

The Product code of the manufacturer

NKZW32F - 12 / T630-20

NKZW32F Design serial number (the Design Series)

12 kV Rated Voltage (Rated Voltage)

Rated current 630 A (Rated current)

20 kA / 4 s rated short-time resistance current (withstand current)

Three, product according to the standard

This product is mainly in accordance with the following national standards:

Switch parts: GB1984-2003 "high voltage circuit breaker"

GB/T11022-1999 "standard of high voltage switch equipment control and common technical conditions"

Control terminal parts: GB/T726-2000 "relay and device basic test method" (GB/T17626-1998

The electromagnetic compatibility test and measurement technology electrical transient bursts immunity test"

Four, the use of environmental conditions

1, the ambient air temperature: - 40 ℃ ~ + 40 ℃; Temperature differences: daily temperature variation is not more than 25 ℃;

2, the wind speed is not more than 35 m/s;

3, no inflammable, explosive danger, strong chemical corrosion (such as all kinds of acid, alkali or smoke, etc.) and the place of violent vibration.

4, altitude, 1000 m or less;

5, cover thickness: 10 mm;

6, air polluted degree: level IV;

7, seismic intensity: 7 degrees or less;

8, power network neutral point grounding way: neutral point grounding, neutral point via arc suppression coil grounding, neutral point by the low resistance grounding.

Five, the main technical parameters

Six, internal structure, appearance and installation dimensions
 

  

NKJLSZY-10(6)

With large distance, accurate measurement, preventing electricity-stolen, overvoltage, maintenance free, high thermal stability, explosion-proof, overload 200%, etc

1: type: NKJLSZY - 10 (6)

2: summary:

50 h z, this product is fit for ac rated voltage 10 kv power supply voltage and current in the three-phase circuit for electric energy metering.

3, the main technical parameters:

3.1, this type of product with special outdoor materials whole note sealing, can adapt to the outdoor wind, sand, rain, fog, dew, and purple

Perimeter, temperature (45 ℃ ~ + 65 ℃), such as natural environment, to exempt the oil-immersed product oil and oil degradation, they are easy

Burning, explosive shortcomings, realize oil-free, every year in oil products from the trouble of the preventive test, save

A lot of manpower material resources.

3.2, the product of voltage transformer and strengthened the side of a coil insulation layer insulation and install capacitive touchscreen devices, wearability

Lightning shock, operating over-voltage, resonance overvoltage, such as high frequency overvoltage, low frequency overvoltage performance.

3.3 are block, high and low, to strengthen the effect of preventing electricity-stolen.

3.4, by carving on the ontology change, is clear, not easy to wear, the permanent will not fade, convenient check, etc

Point to avoid by changing the label and change the label change coming power.

3.5, voltage core adopts imported high quality cold rolled silicon steel sheet production, current iron core is made of high quality silicon steel sheet or

Gold production.

4, main technical parameters:

4.1, the installation place: outdoor (indoor);

4.2, environment temperature, 45 ℃ ~ + 65 ℃;

4.3, height: 4000 meters or less;

4.4, the rated insulation level: 12/42/75 kv;

4.5, voltage transformer induction voltage level: 28 kv or 35 kv;

4.6, product connection mode: Y/Y;

4.7, along the surface of creepage distance: 520 mm or more;

4.8, good resistance to overload ability: can overload 200% (user requirements);

4.9 other parameters are as follows:
Note: 1. The product once to double variable ratio, but the scope of the variable ratio should be controlled within The Times, such as 25 to 50 a or 30 to 60 a, etc.

2. The products can provide 6 kv voltage grade, shape size remains the same.

Part 3. If user current, voltage can be 200%, but should be noted when ordering.

4. If customers have other requirements (such as dynamic thermal stability, capacity, power factor, overload, etc).

Can be negotiated with our company technology department.

5, typical electrical schematic diagram (change) :

6, appearance installation size chart:

6.1, second to have close over, waterproof, anti-theft;

The creepage distance 6.2, level IV uncleanness, 520 mm;

6.3, weight: 90 kg

7. Note: before installing and using

7.1, before the installation, should check whether there is the base of the transformer loose phenomenon, ensure the stability of the transformer on cue, for long

Stage nudity stored in warehouses of the transformer to keep clear surface deposition of dirt, dust, etc.;

7.2, the product transportation to the site installation, check whether there is a transformer surface and umbrella skirt part in the process of transportation damage phenomenon such as;

7.3, products should pay attention to during the process of sling don't knock against the ontology of transformer, transformer vertical lifting, guarantee the stability of the center of gravity;

7.4, according to the requirements for the primary and secondary wiring check, ensure reliable secondary grounded properly, avoid repeat grounding; At the end of

Is grounded properly reliability.

Than 7.5, check a current specifications consistent with actual requirements whether;

7.6, power frequency withstand voltage test shall be carried out under specified test voltage value of 80%;

7.7, because this product is used in outdoor conditions, vulnerable to over-voltage and lightning effects, in A, B, C three-phase high side 1 meter  Equipped with good performance of zinc oxide lightning arrester within
Seven, control and protection devices

In order to obtain excellent protection performance, the product by the controller. Users can be in situ for points on the controller parameter setting, closing operation, also can use the PDA to the controller parameter setting, refer to, by closing operation and protection setting refer to various events recorded, or by specifying a cell phone in the form of text messages instead of PDA. In addition, you can use simple wireless remote control and close operation of circuit breaker.

NKZW32F - 12 f/T630-16 boundary between outdoor ac high voltage circuit breaker control and protection systems as shown in figure 7. The power management background machine for the user should bring along their own equipment. If not, does not affect the use of dividing line circuit breaker.

Seven, control and protection devices

In order to obtain excellent protection performance, product adopted the NKR - 02 type controller. Users can be in situ for points on the controller parameter setting, closing operation, also can use the PDA to the controller parameter setting, refer to, by closing operation and protection setting refer to various events recorded, or by specifying a cell phone in the form of text messages instead of PDA. In addition, you can use simple wireless remote control and close operation of circuit breaker.

NKZW20F - 12 / T630 - type 16 boundary between outdoor ac high voltage circuit breaker control and protection systems as shown in figure 7. The power management background machine for the user should bring along their own equipment. If not, does not affect the use of dividing line circuit breaker.

Simple wireless remote control for the effective control of radius of 30 meters, and can only carry on the circuit breaker points, closing operation. Simple wireless remote control for special. Special simple wireless remote control and the controller is one to one, its advantage is when a boundary between a circuit breaker operation, won't cause other separation circuit breaker points, by mistake. Figure 7 for the control of protection system of physical figure. From figure 7, you can see that person and NKR - 02 type controller, the interface between the PDA or mobile phone short message way may be used. These two approaches. PDA method has the advantage that you can easily control, but its effective service radius of 30 meters, use mobile phone text messages and controller interface, as long as the dividing line circuit breaker with the personnel of the communication signal is good, for there is no limit to the distance, but the dividing line circuit breaker installation site communication signals must be good. And we have to pay for mobile phone short message service. Users must be comprehensive consideration, and then choose any kind of interface.

7.1 the controller

7.1.1 disk

The bottom of the controller is the disk, as shown in figure 8.

7.1.2 setting window

After setting window open, that is, visible setting window pane.

7.1.3 controller fixed value setting

Users can by dividing line circuit breaker control device setting window to fixed value setting below:

And over-current protection setting value, the delay time; Interphase short circuit quick break protection fixed value; Zero sequence protection setting (single-phase grounding current and zero sequence protection delay time; Overlap, reclosing time.

7.1.3.1 zero sequence current setting value size: related to the parameters of the lateral line dividing line circuit breaker load (line length, overhead lines and cable line), can choose according to the following table:

Zero sequence protection fixed value setting principle recommended list

If you don't use the recommended value in the table, the user can also adopt the following calculation formula of zero sequence current setting value is calculated.

Fixed value calculation formula

Recommend 7.1.3.2 zero sequence protection delay time constant value principle

Neutral point grounding system, or by the arc suppression coil grounding whole as the 60 s, neutral point by the low resistance grounding for 30 s. Also can be set according to the actual circumstance of circuit system.

Recommended: according to the operation experience of zero sequence current protection setting value 4 a file 20, zero sequence protection delay constant value 600 s' 29

7.1.4 fixed value table

Setting window open, can see on the fixed value window cover with a fixed value table and controller display definition table. The set values for the fixed value table clearly show value corresponds to dial the code switch to the actual setting value. By changing the setting value dial the code switch, can be set or modified flow current setting value, quick break current setting value, the flow time delay time, zero sequence current protection setting value and zero sequence protection time and number of coincidence and overlap time protection setting value. Regardless of whether or not there is electricity controller, can change the dial the code switch value, to set or modify the setting value. If the dial the code switch setting is equal to the largest dial code gear of fixed value table, controller will be effected according to the maximum value gear. If you want to setting value is greater than the set value table, please contact the manufacturer.

NKR - 02 watchdog dividing line circuit breaker controller dial the code setting value table

  7.2 handheld computers

PDA or PDA with data query, query, modify, setting value, remote operation, state of query, modify password pair, background processing and equipment, and other functions.

To the operation of the controller can also be done through high-end wireless handheld PDA, palmtop, USES the high-grade CPU, built-in real-time multitasking system. Display intuitive, easy to learn. Palmtop has the protection function.

On/off

1 press the switch on/off button, PDA start self-checking, 0.5 seconds later, boot self-checking. Appeared after the boot screen, as shown.

2 in normal operation, press the switch on/off the phone, can turn it off;

3 in the normal operation, if the user does not have more than 20 minutes for any keyboard operation, will automatically be turned off.

[backlight key]

Where the environment is dark when using, can press the key, open the backlight, press [backlight key] again, backlit shut down. PDA initialization complete, first asks the user to enter the password, the password to factory default set to 12345, after the user lose the password, it will directly to the main menu.

7.3 PDA features introduced search equipment after entering the main menu, the user should first click on the menu] [search equipment, can be found near the remote control device, and returns the device number, equipment if the search is less than, perhaps because too far away, or point of view is wrong, the user can search again after the move distance, if there are more than two devices at the same time, near requires the user to use] [manual input, to enter the corresponding number. The device number range is: 1-65000. (switch device number is consistent with the small remote control number).

[query record] when switch or circuit events, dividing line switch controller can record up to 30 recent events recorded, and can record in memory, records can be saved 10 years, the use of [query record] can query the controller inside the event log, the record number is 0, said recent events, record number is 1, said the events of the last record of 2, said to the last event and so on. When the record is full, and when a new event, is the oldest one record will be overwritten. When check records, if this record needs to be saved, the user can press the [save] key and save it, returning home by background processing function, will save the records to the computer for processing.

A typical event record format, for example, as follows:

[control]

After entering/remote control, screen display:

[remote break-brake] : brake switch points

Closing/remote control switch: switch

/ change the password, you can modify the palm computer boot password, enter/change the password after the first asks the user to input the five new password, enter your new password request again, if two input correctly, then change the password is successful, the new password can be used.

[use] simple introduce the basic operation flow of the PDA, users in the use of palmtop, can refer to the instructions.

[device reset] when circuit failure occurs, the controller on the pillars of fault indicator will light up, when the line back to normal, requires the user to manually switch to] [manual reset handle position, the malfunction indicator lamp can be reset, the handheld device reset function, can also be distant fault indicator light will be reset.

[modified fixed value] after entering modified fixed value, PDA display the following picture:

/ modify the fixed value, the first [reads] fixed value, the existing fixed value of [reads] to based on modified [reads] constant value at the end of can't modify directly.

Send [] : send modified fixed value to divide switch controller, if the modification is successful, PDA will return tips, but if there is no success, PDA will also prompt the user.

Meditation, which need to modify the value, can be directly meet the point.

"Equipment serial number" the serial number of the controller, range: 1-65000.

"Zero sequence CT changes than" switch inside the boundary between zero sequence CT changes than wear heart, factory has prepared the user does not have to change, otherwise it will affect the zero sequence protection.

"Quick break protection current fixed value when the line current exceeds the set value, the switch action immediately, isolate the fault zone.

"Over-current protection current fixed value when the line current exceeds the set value and achieve over-current protection delay time, the switch action isolation fault zone.

A "zero sequence current setting value" when the line more than fixed value of zero sequence current and zero sequence protection delay time, switching isolation fault zone.

"Exit dial code fixed value" when the setting value is 0, above dial the code switch controller panel set up effective, the user can't through the PDA is modified; When the set value is 1, above dial the code switch controller panel setting, all the fixed value can only be set by PDA.

"LCD adjustment" when the temperature changes, the liquid crystal display (LCD) may be lighter or darker, the user can be adjusted through the menu, so you can see the LCD.

"Reclosing retreat" 0-1 - exit reclosing in reclosing state [query] after entering state [query], screen display:

[return]

"Second Ia, Ic" said: after transformer, input to the controller of the secondary current.

"Io" : it means the data is a side of zero sequence current switch.

"Secondary Uab" : it means the voltage transformer secondary side voltage.

Background processing is used to processing preserved in palmtop, in the event log. In the main menu [background processing], screen display the following three functions:

[view]

View is saved in the palmtop, in the event log

/ delete data will be stored in the event of palmtop, record all deleted

/ upload data will be stored in the palmtop, in the event log on the cable to the desktop computer, so that the user further processing.

Upload the data, the first to use the data will be connected to the serial port of the PDA and desktop computer, and then click computer [to] - [all programs] - [attachment] - [communications] - [super terminal], and then click [properties], the baud rate is set to: 9600 stop bit: one data bits: 8 bits of data flow control: OFF/ON, and then open the serial port, then click ON PDA "upload data" button above, it can be stored in the event of palmtop revelation to the desktop computer. Super terminal Settings, close the Windows.

Pair] [equipment used to check the function division of switch controller system time to the event log when the time is accurate.

Input time format: year - month - day: points: seconds after input the correct time, press the send button, complete the pair. No data returned for fashion. After the pair, the user can by pressing [reads] key to check whether the pair is correct, if not correct, need to operate for fashion.

Operational considerations:

1, wireless PDA to should take put down gently, when used in the process of using or carrying, be careful be affected with damp be affected with damp and collision, avoid damaged antenna.

2, watch the rain.

3, in the process of operation, unstable if there is a screen or some screen, or deviate from the very serious, please restart after shutdown. Note: the user if you don't do anything more than 20 minutes, PDA will automatically power off.

7.4 mobile phone short message interface (the machine without this feature)

7.4.1 SMS communication services

Short message service is one of the GSM system provides GSM terminal (mobile phone), through a service center for text information transceiver application services, including service center to complete the information store and forward capability. And because the GSM network has realized the networking and roaming across the country, has the characteristics of network capacity. Users need other networking, at the same time greatly improve network coverage for clients to save the expensive cost and maintenance cost, to overcome the traditional private network communication system of large investment cost, high maintenance, network monitoring coverage is narrow and limited number of users to some defects. Compared with traditional cluster system, GSM network in wireless network coverage has incomparable advantage, combined with the GSM itself have a two-way data transfer function, makes the application rapidly. Therefore, our company developed a controller which has the function of GSM SMS communication fault detection. The controller can edit commands in the form of text messages, you can easily to parameter setting, remote control switch points, such as query, query the event log switch states. And the controller can also be through the way of SMS communication and power management center backstage machine to join.

7.4.2 SMS code

Using a mobile phone short message to controller parameter setting, refer to, by closing operation and protection setting refer to various events recorded, downward instructions must be controller can identify the code of instructions. Controller can query answering phone, its upward reply, also only is a simple, code information. So the way of using mobile phones, short message code. NKR - 02 rent information between controller and mobile code as shown in the table "NKR - 02 type controller SMS code table"

7.4.3 the matters needing attention when using SMS code

1, write SMS command, must be in English uppercase and lowercase format in Chinese pinyin or English format, SMS command is invalid.

2 for seconds, zero sequence protection action time unit, other time limit of protection operation units in milliseconds.

3, down the fixed value of zero sequence current instruction, the number of input must be an integer, which represents the current one over ten of the integer.

4, with short message communication between controller and, using the mobile phone must be into the China mobile network.

5, a query set value displayed when a quick break and a current value, modify the quick break and a fixed value when the input current setting value, is a current value.

The working principle of the eight, the protection of the controller

8.1 single-phase earth fault movement theory

8.1.1 neutral point grounding or neutral through petersen coil grounding system circuit is normal, the dividing line circuit breaker of substation outlet switch are still in the closing state, once the user community in single-phase earth fault occurs, dividing line circuit breaker built-in zero sequence current transformer is detected the zero sequence current is close to the entire network of zero sequence current, more than setting the parameters of the beforehand, by the time delay, judgment for single-phase earth fault in permanent, dividing line circuit breaker automatically brake, to isolate the fault zone. Using mobile phone short message communication, information is also reported to the accident. Other users and main road adjacent single-phase earth fault belong to foul trouble, the circuit breaker zero sequence current transformer is detected the zero sequence current is far less than that of setting value, the circuit breaker is not action. Single-phase earth fault and processing is shown in figure 10.

8.1.2 neutral point via small resistance at the neutral point grounding system through small resistance grounding system, the substation with zero sequence protection, but as long as the user community in single-phase earth fault occurs, the user of the boundary between circuit breaker and substation protection relies on action time to cooperate, dividing line circuit breakers ahead of substation switching action, so as to cut off the single-phase earth fault. Ensure the safety of other users.

In and out of single-phase grounding fault judgement and processing, as shown in figure 10

8.2 interphase fault movement theory

Interphase fault occurs when a user limits, dividing line circuit breaker short circuit current is detected, when the short circuit current exceeds over current setting value, after a delay, after confirmed as permanent fault current, circuit breaker points brake. If the short circuit current exceeds quick break current setting value, the breaker points brake immediately. Circuit breaker fault zone isolation, use mobile phone short message communication, also reported events in SMS way.

Nine, protection treatment

Phase current controller input signal, A total of four: A, C, AB and voltage phase current and zero sequence current.

Controller through real-time monitoring the input quantities, judging and comparing with constant value line fault types, and thus for the corresponding processing. In the table below for the system neutral point of different operation modes protection treatment results. 9.1 single-phase fault handling

System grounding fault point location Protect the handling

Note: dividing line of switch Settings and substation outlet switch or fixed value to match the time limit switch action at the next higher level.

Ten, installation,

10.1 switch installation of ontology

10.1.1 before installation to check the products before you check whether product nameplate, certificates are in conformity with order, the packing list is consistent with the physical. After confirmed to clear the surface dust, dirt, and then observe the products of normal directions points or whether if casing deformation, etc., and then put on hand machine handle for manual operation points and 5 times first, then 5 times electric points in operation. Mechanical action after normal, 42 kv / 1 min power frequency withstand voltage test. Other experiments according to user's actual situation, selective, such as: voltage, current transformer, polarity and variable ratio test precision. Check after the completion of installation.

10.1.2 product installation process, do not turn, tilt, anti-shock measures and requirements. Horizontal lift when lifting.

10.1.3 circuit breaker installed with 4 M16 x 50 bolt, the specific installation dimensions as shown in figure 11, installed on the electric pole figure 12 for reference.

The preparing work before installation:

1 hardware processing

Based on the selected installation method processing and installation of hardware and external PT bracket, installation hardware processing size attachment figure in detail.

Ready to install 2 attachments

The following is a single device the required number of attachment:

6 (1) high voltage surge arrester power source side and load side all three)

(2) 10 kv insulator specification and quantity according to the installation and the size of the pole).

3) hoop (specification and quantity according to the installation and the size of the pole).

6 (4) switch wire connecting clamp size according to the wire diameter of the field lines);

5) grounding conductor.

6) PT stents.

3 to install equipment examination

Appearance inspection content:

1) fastening and sealing are in good condition?

2) shell casing and presence of lesions?

3) control the socket and pin are in good condition?

4) handles and share the pointer in the normal position?

Insulation measurement content:

1) insulation resistance: : time for secondary and 10000 mq or higher; Secondary to ground: 10 or more mq

2) high voltage: : time for secondary and 42 kv, 1 min; Secondary to ground: 2 kv, 1 min;

No controller for 42 kV withstand voltage test!

Prohibited under the condition of the controller is connected to the circuit breaker to withstand test!

Prohibited in the case of secondary AC220V plug in to any pressure test!

Installation steps

Step 1: install the circuit breaker bracket, and the bracket of PT

Step 2: lifting

Before lifting switch in break-brake position;

Note:

* hook the hook hook on cord length should be 0.8 m;

* protect switch don't collide in the process of lifting to avoid injury casing and casing;

* switches allow a slightly tilted.

Step 3: fixed

The circuit breaker operation to install than frame level cross arm slightly higher place, place the circuit breaker on the mounting bracket horizontal cross arm, with four sets of M17x60 stainless steel bolt and nut fastening. Determined to fixed well, the lifting cord. The outer type in the lower part of the circuit breaker PT PT rack installation, with four groups of M14x40 stainless steel bolt, nut fastening.

Step 4: a cable connection

1) when a circuit breaker does not need to install the isolation, can clip will divide directly connected to circuit switch sides, if a circuit breaker need to install the isolation, use the copper wire cable terminals are connected to the isolation and outlet side breaker.

2) with two more than about 10 square insulation high-voltage wire a pick up in AB phase of the power supply side, the other side and on the high side terminals of PT.

Note:

* note keep the insulation of the spacing between cable in at least 100 mm; * circuit breaker is not less than 6.5 meters off the ground * PT spacing not less than 1.5 meters and circuit breaker

* please be sure to install lightning arrester in switch on both sides of each phase in case of lightning damage to equipment. * the controller is not less than 2.5 meters off the ground

The installation of the controller

The overall dimensions and installation of the controller

Hardware processing and installation accessories

Controller in the factory "hook" installation has been attached with goods, users only need to prepare the fixed hardware installation, fixed fittings processing according to the different of the installation points is different also. General controller installed on the cylindrical pole, the fixed hardware (cap) according to the diameter of the cylindrical pole to prepare.

Users should bring along their own number of attachments (below is needed for installing a controller).

Size 1, 2 hoop, according to the size of the pole;

2, ground wire, wire diameter not less than 16 was, the length of the line on the basis of on-site installation.

Eleven, product storage and maintenance

11.1 packaged circuit breaker during transportation, loading and unloading, no inversion, strong vibration and impact.

11.2 circuit breaker stored in dry and ventilated, moistureproof, and against corrosion of indoor harmful gas or have covered warehouse, long-term storage should be in the transmission part and butter, and regularly check whether environment meets the requirements.

Product storage of fixed number of year for 15 ~ 20 years.

Prohibited under the condition of circuit breaker or controller charged call waiting controller aviation joint!

It is forbidden to aviation plug and cable bending to more than 45 degree Angle.

Because the controller is precision electronic products, don't have to be grounded!

When ordering 12, the user clear

1, the product model, name, parameters, rated voltage, current, short circuit current and communication;

2, transformer ratio and measuring accuracy grade, protection grade CT technical requirements;

3, number and date of delivery;

4, the names and number of spare parts, spare parts;

5, and other special operation requirements, such as contact, accessories, etc.

6, product certification (including PT, CT, zero sequence current transformer)

7, installation instruction manual;

8, packing list;

9, products, secondary wiring diagram.

10 please indicate the sea dials high, if the sea dials high products

Here is the order table, for example