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Indoor High Voltage Live Display

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product-description1

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Overview

This product is a HX2 phase comparator (PC) designed and produced by our company according to the requirements of users, which is used in conjunction with the DXN80 series of indoor high-voltage live display devices (the indicator panel sets the phase test end). It is suitable for substations and power distribution stations (especially when cables enter the line) that are equipped with dual power supplies and multiple power supplies for indoor 3.6, 7.2, 12, 40.5kV, frequency 50Hz and indoor high-voltage live display devices. Phase comparison can be performed at the low-voltage side without opening the switchgear door before power transmission.

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Overview

Anti-misoperation program lock is a mechanical lock for high-voltage switchgear. the lock. The operator is forced to operate the electrical equipment in accordance with the prescribed safe operation procedures, thereby avoiding the misoperation of the electrical equipment, and more fully meeting the requirements of the five tendons proposed by the power supply department:
a. Prevent the switch from being pulled and closed by mistake;
b. Prevent the isolation knife from being pulled and closed with load;
c. Prevent from entering the live interval by mistake;
d. Prevent the live wire from hanging on the ground (see the grounding knife);
e. Prevent the ground wire (see the grounding knife): closing, etc.

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Operation function

Notes

Vacuum switch/upper isolation/rear door/front door

1A 4A 5A 5B

Vacuum switch/upper isolation/rear door/front door

1A 4A 5A

Vacuum and close/top isolation/bottom isolation/rear door/front door

1A 4A 4B 5A 5B

Vacuum switch/upper isolation/lower isolation/front door

1A 4A 4B 5A

Upper isolation/back door/front door

4A 5A 5B

Quarantine/Front Door

4A 5A

Cabinet/special lock/front door/rear door
Two locks and one key
Three locks and two keys

Overview

Aluminum alloy comb heater is a new type of electric heater specially designed for moisture-proof and dehumidification of electric equipment. The heater is composed of a special aluminum alloy heat dissipation plate and a high-quality alloy heating wire. It has the characteristics of small size, beautiful appearance, uniform heat dissipation, fast heat conduction, and large heat dissipation surface, so as to ensure that the service life of the heating wire is longer than ordinary The heater is much longer and can work reliably for a long time.
Working voltage: AC220V
Rated power: 25W-200W; 300W-500W
Dimensions (mm): 158×100×23; 200×100×23 (length, width, height)

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Product parameters

1. Temperature limit
2. Wide voltage range
3. Efficient heating
4. Energy saving
5. Lightweight
Small heaters are mainly used in switch boxes to prevent condensation.

Technical Parameters

product-description8 Operation voltage 120-240V AC/DC(min.110V,max,265V)
Heating elements PTC heating element
Exothermic body Anodized aluminum profile
Installation method screw installation
Installation method optional
Creation/Storage Environment -45 to+70℃( -49 to +158 oF)
Protection class IP32

Overview

Silicone rubber heater is a new type of ultra-thin, anti-scalding and waterproof heater. It adopts silicone one-time molding technology (original in China), which has the functions of small size, long life, uniform heat dissipation, waterproof and anti-scalding, etc. It is easy to use and ideal for traditional heaters. alternatives.

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Technical Parameters

 product-description10 Power

long

Width

Thick

Hole distance

Hole spacing

50w

150mm

90mm

2.8mm

136

76

75w

150mm

90mm

2.8mm

136

76

100w

185mm

120mm

2.8mm

169

106

150w

185mm

120mm

2.8mm

169

106

200w

185mm

120mm

2.8mm

169

106

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Panel type ground and short circuit fault indicator

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System principle

With the extensive use of ring network switch cabinets and cable branch boxes in the power grid, the problem of how to find the faulty section of the cable in time becomes more and more prominent. Short circuit and ground fault indicators offer the best solution to this problem.
The short circuit and ground fault indicator is installed on the ring network switch-level cable branch box in the matching amp 10KV-35KV distribution network system, which is used to indicate the phase-to-phase short-circuit and single-phase grounding fault of the corresponding electrical terminal section. As shown in the working principle diagram below, when there is a short circuit or a ground fault in the ring network system, all fault indicators between circuit breaker A and the fault point pass through the fault current. After the indicators detect the fault current, the indicator light of the host flashes and alarms. . Therefore, the indicator between the hidden point and the normally open point is in a normal off state (no flickering, no alarm) due to the water passing through the fault current. The line maintenance personnel can quickly disconnect the faulty section according to whether the indicator light flashes or not.
As shown in the figure, the fault occurs between the No. 3 and No. 4 ring main units. Therefore, disconnect the load switch of No. 3 cabinet, and then close the circuit breaker A, then the No. 1, 2, and No. 3 ring main units and their branches The system resumes power supply, and the power supply of No. 4 and No. 5 cabinets is realized by closing No. 6 normally open point. In this way, only a faulty cable is isolated, so as to ensure that all compliance can restore power in time.
The speed and efficiency of using the fault indicator to find the faulty section far exceed the traditional two-point method and the opening and closing test power supply method, and there is no risk brought by these traditional methods (such as the injury accident that may be caused by the insulation test), it is A method of providing reliability of power supply.

The working principle of the whole machine

When there is a short circuit or ground fault in the power supply line, the electromagnetic field generated by the short circuit or ground current changes, so that the measuring coil in the sensor fixed on the electrical terminal generates a pulse signal. When the value of the pulse signal reaches or exceeds the set fault current When the value is set, the follower indicator will automatically memorize the fault status, so the fault indication will be issued when the indicator light flashes. At the same time, the fault signal will be transmitted to the monitoring center through the remote alarm interface, and the staff can quickly and accurately find the line fault through the fault indication signal. location, troubleshoot in time, and restore power to the grid.

The main function

Short-circuit fault alarm indication: The short-circuit fault sensor is installed on the single-phase cable to monitor the current change in the power supply line at all times. When its value reaches or exceeds the short-circuit current action purple setting value (this value can be set according to user requirements before leaving the factory) , The short-circuit fault sensor sends out an alarm signal, and the signal is sent to the indicator host through the optical fiber, and the corresponding short-circuit fault indicator flashes to issue an alarm indication.

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Installation method

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1. Installation of indicator host
The main unit of the indicator is installed on the front panel of the power distribution cabinet
To remove the main unit, you must press the metal shrapnel on the main casing
Hole size: 91.5mm (tolerance: ±0.3) × 43mm (tolerance: ±0.3)
2. Installation of short-circuit fault sensor
After covering the cable with the cable clamp, insert the two pegs of the sensor along the opening direction of the clamp. After connecting the sensor and the clamp, rotate the solid screw on the clamp to fix the sensor on the phase cable. superior. The short-circuit fault sensor must be installed on the branch phase cable of the ring network distribution line, and must be tightly sleeved on the cable line under test to prevent the sensor from sliding and causing the optical fiber interface to loosen or break.

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3. Installation of ground fault sensor
Loosen the screw of the magnetic conductor ring, surround the unshielded section of the three-phase cable, tighten the screw of the conductor tape, tighten the cable tie on the sensor, and fix it on the three-phase cable so that it cannot be loosened

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4. Connection of signal fiber
Loosen the nut on the fiber socket, insert one end of the fiber into the hole of the fiber socket, insert the fiber end to the end, and tighten the nut until the fiber cannot be connected; the other end of the fiber is installed according to the same method and instructions Connect and lock the corresponding optical fiber socket on the main unit. The connection of the two sensors to the indicator host should be firmly connected to prevent loosening and falling off, so as to ensure the normal operation of the indicator.
Note: The section at both ends of the optical fiber has been specially treated, and the installer must not cut it short at will, otherwise it will affect the normal operation of the indicator!

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5. Remote connection of the signal

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Type B: 13, 14 are normally closed, 14, 15 are normally open;

Temperature measuring panel grounding and short circuit fault indicator

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The main function

1. Short-circuit alarm indication: The short-circuit sensor detects the current of the line during operation. When the line has a short-circuit fault and meets the short-circuit judgment conditions, it will issue a tight signal.
2. Grounding report instruction: The grounding sensor detects the zero-sequence current of the line during operation, and when the grounding fault occurs in the line network, the ground fault current exceeds the set value of the reporting current, and a report signal is issued.
3. Over-temperature alarm indication: The temperature sensor detects the longitudinal temperature of the adjacent electric head during operation, and transmits it to the host through the optical fiber in a very short period of time. When the electric splicing temperature reaches or exceeds the alarm temperature setting value, the host will issue an alarm. Signal, close the contact.
4. Temperature and current display: The two-in-one sensor monitors the temperature and current of the monitoring point during operation, and transmits it to the host through optical fiber at a certain frequency. After the host receives this signal, it displays the data on the LCD screen.
(By operating ▲ and buttons to scroll up and down to check the current and temperature of each phase of the stone). (current display optional function)
5.Two-super communication: After the indicator generates a short-circuit and grounding indication alarm signal, it can output the remote fault and danger status through the RS485 communication cable; when there is no fault, the load current of the line and the temperature of the monitoring point are regularly reported to the host computer through the RS485 cable . (optional feature)

Technical Parameters

1. Short circuit alarm: 50-1000A (factory setting) error ±5%; factory setting: 600A
2. Short circuit overcurrent response time: 0.03-5S (factory setting); factory setting: 0.2S
3. Grounding alarm: 10-100A (factory can be set) error 10%; factory setting: 20A
4. Grounding overcurrent response time: 0.03-5S (factory setting); factory setting: 0.2S
5. Over temperature alarm: 20-80°C (can be set on site) error ±1°C; factory setting: 80°C
6. Automatic reset time: 7S-48h (can be set at the factory); the factory setting is: 8h
7. Standby current of the whole machine: ≤5uA
8. Prompt protection level: host IP40; sensor IP65
9. Short circuit grounding remote relay: 230V/AC-0.1A 30V/DC-1A
10. Over temperature jump read dry contact capacity: 230V/AC-0.1A 30V/DC-1A
11. Over-temperature alarm: the relay outputs 3 cycles (each cycle is 2S, set 750mS, reset 1250mS)
12. The maximum withstand current of the short-circuit current sensor: 31.5KA/4S
13. Working environment: -25℃~+75℃; relative temperature: ≤95%; waterproof, acid-proof, salt-fog proof
14. Scope of use: in systems below 20KV
Ground fault alarm indication: The ground fault sensor is installed on the unshielded part of the three-phase cable bifurcation, and detects the zero-sequence current value of the three-phase cable. When the value reaches or exceeds the ground current action alarm setting value (this value can be According to the user’s requirements, the ground fault sensor sends out an alarm signal, and the signal is transmitted to the indicator host through the optical fiber, and the ground fault indicator flashes to give an alarm indication.

Installation method

product-description20

1. Installation of indicator host
The main unit of the indicator is installed on the front panel of the power distribution cabinet
To remove the main unit, you must press the metal shrapnel on the main casing
Hole size: 91.5mm (tolerance: ±0.3) × 43mm (tolerance: ±0.3)
2. Installation of short-circuit fault sensor
After covering the cable with the cable clamp, insert the two pegs of the sensor along the opening direction of the clamp. After connecting the sensor and the clamp, rotate the solid screw on the clamp to fix the sensor on the phase cable. superior. The short-circuit fault sensor must be installed on the branch phase cable of the ring network distribution line, and must be tightly sleeved on the cable line under test to prevent the sensor from sliding and causing the optical fiber interface to loosen or break.

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3. Installation of ground fault sensor
Loosen the screw of the magnetic conductor ring, surround the unshielded section of the three-phase cable, tighten the screw of the conductor tape, tighten the cable tie on the sensor, and fix it on the three-phase cable so that it cannot be loosened

product-description22

4. Connection of signal fiber
Loosen the nut on the fiber socket, insert one end of the fiber into the hole of the fiber socket, insert the fiber end to the end, and tighten the nut until the fiber cannot be connected; the other end of the fiber is installed according to the same method and instructions Connect and lock the corresponding optical fiber socket on the main unit. The connection of the two sensors to the indicator host should be firmly connected to prevent loosening and falling off, so as to ensure the normal operation of the indicator.
Note: The section at both ends of the optical fiber has been specially treated, and the installer must not cut it short at will, otherwise it will affect the normal operation of the indicator!

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5. Remote connection of the signal

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Type B: 13, 14 are normally closed, 14, 15 are normally open;

6~35KV nonlinear resistor harmonic eliminator

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Product description

The neutral point of the 6~35KV voltage transformer is a non-linear resistance harmonic elimination damper (referred to as the harmonic elimination device), which is installed in the primary winding Y of the 6~35KV voltage transformer (hereinafter referred to as the voltage transformer or PT). A non-linear resistance harmonic elimination damping device between the neutral point of the junction line and the ground. The product model of the harmonic eliminator--represents the rectangular harmonic eliminator designed according to the traditional shape; it represents the third modified design, the resistor surface is exposed, and the cylindrical shape harmonic eliminator is not required to be protected by an insulating jacket. The two are only different in appearance, and the electrical performance is exactly the same.
The DC electrical characteristics of the 6~35KV harmonic eliminator are similar to those of the traditional harmonic eliminator, but the structural design has been greatly improved from the perspective of increasing the heat capacity of the harmonic eliminator. The harmonic eliminator uses Sic with excellent electrical properties and ultra-fine particles as the base material; it is pressed into a high-density, round cake-shaped body by a large-tonnage press; in a reducing atmosphere; it is sintered at a high temperature of thousands of degrees. .
The exposed surface structure of the resistor is specially treated, which can withstand the sun and rain, and can be directly used indoors and outdoors. It is small in size, light in weight, fast in heat dissipation, high in strength and easy to install, and is very popular among users.

Main electrical performance

Harmonic elimination is to use 6KV and 10KV as general models, performance parameters (Table 1)

Serial number

Project

10(6)KV

35KV

1

Via AC 0.3mA

Voltage (V) peak / 2

130+30

450+100

Peak √2 current

Resistance (KΩ)

>450

>1800

2

Via AC 0.3mA

Voltage (V) peak / 2

500+100

1400+150

Peak √2 current

Resistance (KΩ)

>180

>550

3

Power frequency voltage change across the D-type resistor

Limit below 3KV (peak √2)

Limited to 5KV (peak √2) or less

4

2 hours withstand power (W)

1. Without any obvious damage
2. Before and after the heat capacity test, the change of U0.3mAp and 3mAp<+10

5

10min through the capacity of 500mA (effective value)

1. Without any obvious damage
2. Before and after the heat capacity test, the change of U0.3mAp and 3mAp<+10

Main performance parameters of 6-35KV harmonic eliminator (Table 2)

Serial number

Project

6、6D

10、10D

35、35D

1

Via AC 1mA

Voltage (V) peak / 2

170-210

280+350

840+1050

(peak √2)

Resistance (KΩ)

>170

>280

>840

2

Via AC 10mA

Voltage (V) peak / 2

480-600

800-100o

2100-2625

(peak √2)

Resistance (KΩ)

>48

>80

>210

3

Power frequency voltage change across the D-type resistor

At 3KV (peak/2), the resistance value is reduced by more than half

At 3KV (peak/2), the resistance value is reduced by more than half

At 5KV (peak/2), the resistance value is reduced by more than half

4

2 hours withstand power (W)

>800

>800

>800

5

10min through the capacity of 500mA (effective value)

1. Without any obvious damage
2. Changes of U0.3mAp and U3mAp before and after the heat capacity test, <+10

Selection of harmonic eliminator models

Suitable transformer model - fully insulated

Suitable for the voltage transformer model with (D) type, half insulation

6,10 35

6,10 UNE10,35

6,10 35

6,10;35G UNE10

6,10 35

6,10,35G UNE10,35

6,10 35

6,10 UNE10

6,10G 35

6,10,35 UNE35

6,10 35

-6,10

6,10 35

·6,10

6~35KV Harmonic Eliminator Use Environment

1. In the outdoors, it is installed on the nearest side of the pressure transformer. Although the harmonic eliminator has a rain-proof function, it should not be directly exposed to the sun and rain;
2. Ambient temperature -40℃
3. The frequency of the foot power system is 50HZ or 60HZ;

Three-phase four-phase combined overvoltage protector (combined arrester) 6KV, 10KV, 35KV

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35KV system

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  • product name

    product model

    basic function

    remarks

    High-voltage live display device

    DXN-T

    图片2

    With prompt type

    Open hole is 102mm * 72mm

    OR 91mm * 44mm

    DXN-Q

    Mandatory lock type

    Open hole is 102mm * 72mm

    OR 91mm * 44mm

    DXN-T (nuclear phase)

    With electrical inspection prompt type

    Open hole is 102mm * 72mm

    OR 91mm * 44mm

    DXN-Q (nuclear phase)

    Forced locking type with electric test

    Open hole is 102mm * 72mm

    OR 91mm * 44mm

    D XN-Q (with self-check nuclear phase)

    With power inspection self-inspection type

    Open hole is 102mm * 72mm

    OR 91mm * 44mm

    D XN-Q (with self-check nuclear phase)

    With with self-check

    Open hole is 102mm * 72mm

    OR 91mm * 44mm

    L-6T (nuclear phase)

    With electrical inspection prompt type

    Open hole is 55mm * 32mm

    L-6Q (nuclear phase)

    Forced locking type with electric test

    Open hole is 55mm * 32mm

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