Electrical fire monitoring detectors (hereinafter referred to as current detectors) are stand-alone smart detectors. As the relay part of the signal processing of the electrical fire monitoring system, the current detector can intelligently analyze the signal transmitted by the lower terminal current probe through the built-in circuit and software, thereby determining the state of each current probe of the lower terminal ( That is, fault conditions, fire alarm conditions, and normal working conditions are applicable to places where electrical fires are most likely to occur, such as factories, large warehouses, offices, commercial buildings, hotels, houses, and entertainment venues.

Technical Specifications Edit Ø Leakage Current Monitoring Alarm Delay Event 0.1~2.0S

Ø zero sequence current transformer type external maximum length (shielded) 10m

Ø temperature sensor type Pt100

Standard wiring length 3 meters Ø alarm output alarm type buzzer sounds, alarm light flashes Ø relay output maximum switching voltage 250VAC or 30VDC

Maximum switching current 3A

Ø Electrical measurement input voltage 380V/220V

1.2 times rated voltage, continuous working input current rated current 5A or 1A, variable ratio can be set to 1.2 times rated current, continuous operation Ø working power supply input AC85V~264V50/60HzDC100V~300V

Power consumption <5W

Ø Communication network type RS485, 2-wire, half-duplex, optically isolated communication protocol Modbus-RTU

The baud rate is 1200~19200bps

Ø Mechanical Characteristics Weight 0.5kg

IP protection class IP52 (front display board), IP30 (backplane)

Size panel: 96mm(L)*96mm(W)*16mm(H)

Body: 90mm(L)*90mm(W)*56mm(H)

Ø Environmental conditions Operating temperature -20°C~+70°C

Storage temperature -25°C~+75°C

Atmospheric pressure 80kpa~110kpa

Relative Humidity 5%~95% Non-condensing shape and opening size The SWL500-I and SWL500-II electrical fire monitoring detectors are compact and easy to install.

Ordering Information Zero Sequence Current Detector Specifications Current Transformer Specifications Range of Use 50A

16A~50A (including 50A)

100A

50~100A (including 100A)

250A

100~250A (including 250A)

400A

250~400A (including 400A)

630A

400~6300A (including 630A)

800A

630~800A (including 800A)

800AU

800A Order Number Example: SWL500-I-PT-S-100A

Explanation: Select SWL500-I type electric fire monitoring detector, matching PT thermal resistance input and SOE function, zero-sequence current detector specification 100A.

Electrical Fire Design Reference Sites for Installation of Electrical Fire Monitoring Systems The following is an excerpt from the location of installation in Chapter 2 of the Design Method for Electrical Fire Monitoring Systems.

2. Setting place 2.1 General provisions 2.1.1 Setting up the electric fire monitoring system shall be determined according to the fire risk level of the fire automatic alarm protection target.

2.1.2 An area for electrical fire alarm detection should not exceed one fire zone.

2.2 Special Protection Object Settings Electrical fire monitoring system requirements 2.2.1 Distribution room Important low-voltage outlet circuit should be set up electrical fire detectors.

2.2.2 Fire zone lighting Electrical fire detectors shall be installed at the incoming line of the distribution box.

2.2.3 Electrical fire detectors should be installed at the entrance of the power distribution box.

2.2.4 Electric fire detectors shall be installed at the entrance of distribution boxes in crowded places such as auditoriums, conference halls, and multi-purpose halls in buildings.

2.2.5 song and dance halls, karaoke halls (including restaurants with karaoke function), KTVs, video halls, screening halls, saunas, amusement halls (including electronic entertainment halls), cafes, and other singing and dancing entertainment exhibition places in buildings Electrical fire detectors shall be installed at the total incoming line of the distribution box.

2.2.6 Electrical fire detectors shall be installed at the total incoming area of ​​the distribution box of underground shops (fields) within the building.

2.2.7 Other places with a high risk of electrical fire.

2.3 and the protection object set electrical fire monitoring system requirements:

2.3.1 Electrical fire detectors shall be installed at the entrance of the lighting distribution box (except the underground garage).

2.3.2 Electrical fire detectors should be installed in the places specified in 2.2.4, 2.2.5, 2.2.6, and 2.2.7.

2.4 Secondary Protection Object Setting Electrical Fire Monitoring System Requirements:

2.4.1 Electrical fire detectors should be installed at the entrance of the lighting distribution box.

2.4.2 Electrical fire detectors are to be provided in the places specified in 2.2.4, 2.2.5, 2.2.6 and 2.2.7.

2.5 Electrical fire detectors should be installed at the entrance of student dormitories, welfare facilities for the elderly, kindergartens, schools for the blind, schools for the deaf and deaf, and lighting distribution boxes.

2.6 The important buildings of international cultural relics protection units are ancient buildings with brick or wood structure. Electrical fire detectors shall be installed at the entrance of the power supply circuit and distribution box.

2.7 In addition to high-rise buildings outside the furniture city, clothing city, building materials city, lamps and lanterns city and other places with high fire risk, densely populated places, lighting, power distribution boxes into the line should be set up electrical fire alarm monitoring system.

Working Principle
Materials in the feed hopper are sent into the grinding chamber by a spiral conveyor, and then cut and smashed by the high speed rotary blade. Then the materials are sent into a cyclone separator by negative-pressure conveying, and discharged out of the grinder. The dust produced in the grinding work is filtered by the filter cylinder and then recycled. In the whole production process, there is no flying dust, which greatly improves the utilization rate of materials.

Features
1. Our WFJ series Microparticle Pulverizer consists of three parts: a main machine, an auxiliary machine, and an electric control unit. It is compact in design and reasonable in structure. It has winnowing capability, no sieve or mesh.
2. Equipped with a grading device inside the machine, this Grinding machine could complete grinding and grading at one time.
3. Negative-pressure conveying system could constantly exhaust the heat in the pulverizer produced by the grinding work, so our microparticle pulverizer is also suitable for thermal sensitive materials.

Micro Grinder

Microparticle Pulverizer,Superfine Pulverizer,Rotor Type Pulverizer,Micro Grinder

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