Browse

Antiques Collectibles Apparel Baby Kids Items Books， Movies And Music Electronics Free Stuff Garden Outdoor Health Beauty Home Goods Home Improvement Supplies Musical Instruments Office Supplies Pet Supplies Sporting Goods Ticket Toys Games Transportation Others

Used Cars New Cars Others

Business Crafts Design And Web Events Home Improvement Legal Lessons Personal Pets Photography Repair And Technical Support Wellness Writing， Translation， And Transcription Others

Activities & Groups Artists & Musicians Classes & Lessons Events Friendship & Networking Lost & Found Rideshare Sports Teams Volunteers Travel & Travel Partners Skills & Language Swap Other

What is the difference between explosion-proof levels CT4 and BT4?

1 Answers

AthenaLee

07/30/25 10:11am

The differences between explosion-proof levels CT4 and BT4 are as follows: 1. Different levels: The explosion-proof level of CT4 explosion-proof motors is ExdIICT4, while that of BT4 explosion-proof motors is ExdIIBT4, with a lower protection level than CT4 explosion-proof motors. 2. Different applicable gas environments: BT4 is suitable for some conventional gases, such as methane, ethane, petroleum, hydrogen sulfide, and other common gases. CT4 can cover more uncommon and highly explosive gases, such as hydrogen at CT1 level, water gas, acetylene at CT2 level, and carbon disulfide at CT4 level. 3. Different explosion-proof levels: The explosion-proof level of CT4 explosion-proof motors is higher than that of BT4 explosion-proof motors. 4. Different applicable zones: BT4 is suitable for gas hazardous area Zone 2, with a maximum surface temperature not exceeding 135°C. CT4 is suitable for gas hazardous areas Zone 1 and Zone 2, with a maximum surface temperature not exceeding 135°C.

Was this review help?

2

1

Share

More Forum Discussions

Does the Electronic Thermostat Need to Be Matched When Replaced?

Replacing the electronic thermostat does not require matching; it can be installed directly. Working Principle of the Thermostat: The thermostat automatically adjusts the amount of water entering the radiator based on the temperature of the coolant, changing the water circulation range to regulate the cooling capacity of the radiator, ensuring the engine operates within an appropriate temperature range. The thermostat must maintain good technical condition; otherwise, it will severely affect the normal operation of the engine. Too Late and Too Early: If the main valve of the thermostat opens too late, it will cause the engine to overheat; if the main valve opens too early, it prolongs the engine's warm-up time, resulting in the engine temperature being too low.

Will Modified Xenon Headlights Cause Spontaneous Combustion?

Modified xenon headlights will not cause spontaneous combustion as long as the main wiring is correctly connected. It is essential to choose a reputable facility for the modification. Advantages of modified xenon headlights: After modification, the vehicle's lighting performance will be enhanced. Xenon bulbs have a longer lifespan compared to halogen bulbs, and their comfortable color temperature can effectively reduce driver visual fatigue, significantly improving driving safety. Precautions for modifying xenon headlights: Do not install the ballast near heat sources; it can be mounted on the bumper to aid in heat dissipation. During installation, ensure the wiring harness is neatly routed and avoid contact with heat sources to prevent short circuits or wire damage due to excessive temperatures.

Is the Phideon a product of FAW-Volkswagen or SAIC Volkswagen?

The Phideon is a product of SAIC Volkswagen, which is a mid-to-large-sized car launched by SAIC Volkswagen. It comes in two powertrain options: one equipped with a 2.0T turbocharged engine and the other with a 3.0T supercharged engine. The 2.0T turbocharged engine delivers a maximum power of 165 kW and a peak torque of 350 Nm, while the 3.0T supercharged engine produces a maximum power of 220 kW and a peak torque of 440 Nm. In terms of dimensions, the Phideon measures 5074 mm in length, 1893 mm in width, and 1489 mm in height, with a wheelbase of 3009 mm.

Can Engine Oil Be Stored in the Car Trunk During Summer?

Sealed engine oil can be stored in the trunk as it is not prone to evaporation, has a high ignition point, and does not fall under the category of flammable or explosive hazardous materials. Common Brands of Automotive Engine Oil: Common brands of automotive engine oil include Shell, Mobil, Castrol, and Total. When selecting engine oil, car owners need to understand the brand and also be able to identify the quality of the oil to avoid misconceptions that could affect the normal operation of the engine, leading to abnormal wear. Functions of Automotive Engine Oil: It serves to lubricate and reduce friction in the engine, assist in cooling, seal against leaks, prevent rust and corrosion, and provide shock absorption and buffering.

Should the Automatic Parking be Shifted to N Gear?

Whether to shift to N gear depends on the duration of parking and the model of the vehicle being driven. 1. Parking Duration: If the parking time is short, there is no need to shift to N gear, and you can keep it in the forward gear. However, if the parking time is long, it is necessary to shift to N gear. Some vehicles may disengage the power transmission when the brake is fully pressed or the automatic parking is activated during a red light. 2. Automatic Parking: Automatic parking refers to a function that automatically applies the brakes. Once activated, for example, when stopping at a red light, it eliminates the need to use the handbrake or electronic parking brake, simplifying the operation. For automatic transmission models, it also avoids frequent shifting between D to N or D to P.

What type of fire extinguisher is used in cars?

Vehicle-mounted fire extinguishers used in cars are primarily dry powder extinguishers and water-based extinguishers. Dry powder extinguishers act quickly but are polluting and corrosive. Water-based extinguishers can extinguish all types of fires except Class D metal fires, are non-polluting, harmless to humans, and particularly effective against Class B liquid fires, making them suitable for engine and car fires. Currently, the most common portable fire extinguishers for automotive use on the market include dry powder extinguishers, ultra-fine dry powder extinguishers, carbon dioxide extinguishers, and water-based extinguishers. Dry powder extinguishers work through chemical inhibition, interrupting the chain reaction of combustion, offering high fire rating, comprehensive functionality, rapid extinguishing, electrical insulation properties, and good low-temperature performance.

Trending Ranking

What is the difference between small trade and large trade motorcycles?

Where is JASSITOW Tires Produced?

How to Remove Old Car Film?

How often should a car over 6 years old be inspected?

What is the difference between the Great Wall Pao Small Double and Large Double?

Can a new car be licensed with scratches?

What does the wrench symbol on the 10th-generation Accord's dashboard mean?

Can a Tiptronic Transmission Perform a Launch Start?

What is the component called that fixes the brake caliper?

Severe Cab Vibration When Braking a Truck

More Forum Discussions

How to reset the tire pressure light on the Volkswagen New Sagitar?

What Causes Foam in Transmission Fluid?

How to Remove the Headlight of Kia K3?

Can Antifreeze Cause High Engine Temperature?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.