Power supplies are advanced devices used in industrial environments where there is a risk of sparks or electrical discharges, which can lead to hazards associated with the conduction of flammable gases. These specialized power supplies are designed with safety in mind, especially in areas where the presence of combustible substances poses a potential risk. Intrinsically safe power supplies are equipped with technologies that prevent spark formation, including special enclosures, insulation, and electrical protections. Thanks to these safety measures, intrinsically safe power supplies eliminate the risk of ignition in flammable gas environments, which is particularly crucial in the chemical, oil, and mining industries.

Description

The ZIH2-12/1 and ZIH2-12/1.7 intrinsically safe power supplies are designed for safely powering electrical devices in underground mines. The components are housed in flameproof enclosures, allowing them to operate in areas at risk of methane explosion.

Key Features

Intrinsically Safe Connection Box for Output Circuits: The safe connection box for output circuits eliminates the risk of spark formation during electrical connections. This is a critical safety feature in mining environments where explosion risks are high.
Flameproof Enclosure with Terminal Strip: The flameproof enclosure, coupled with the terminal strip, functions as a flameproof junction box for the primary circuits of the power supplies.
Simple Optical Signal for Power Supply Status: The simple optical signal provides visual monitoring of the power supply’s status. This easy-to-read indicator helps quickly identify any potential issues, contributing to efficient system maintenance.
Output Circuit Suitable for Group I, Category M2 Devices: The output circuit is designed to power devices from Group I, Category M2 (Level ib protection), which meets strict safety requirements for mines. Level ib protection covers areas where gas concentrations may occasionally exceed acceptable limits.

Additional Benefits

Environmental Resistance in Mines: The power supply is resistant to the harsh environmental conditions found in mines, including moisture, dust, vibrations, and low temperatures.
Compliance with Safety Standards and Certifications: The power supply is compliant with relevant standards and certified for safety under ATEX regulations.
Integration with Safety Systems: The power supply can be integrated with other safety systems in the mine, such as gas monitoring or evacuation systems, enhancing the overall system’s effectiveness.
Use of Advanced Fire-Resistant Materials: The use of fire-resistant materials enhances the power supply’s resistance to fire and high temperatures.

Specification

Nominal Input Voltage: 230 VAC
Permissible Input Voltage Range: 85 ÷ 265 VAC
Maximum Input Voltage: 265 VAC
Nominal Output Voltage: 12 ÷ 12.6 VDC
Nominal Output Current: 0.8 ÷ 0.85 A
Maximum Output Voltage: 13.9 VDC
Maximum Output Current: 1 A
Maximum Output Power: 13.9 W
Maximum External Capacitance: 20 µF
Maximum External Inductance: 0.5 mH
Operating Temperature Range: 0°C ÷ +40°C
Marking: Exd [ib Mb] I Mb
Enclosure Protection Rating: IP 54
Dimensions: 261 x 299 x 144 mm
Weight: 9.2 kg

Additional Information

– Intrinsically Safe Connection Box for Output Circuits
– Flameproof Enclosure with Terminal Strip for Primary Circuit Joints
– Simple Optical Signal for Power Supply Status Monitoring
– Output Circuit for Group I, Category M2 Devices (Level ib Protection)

Ex Zone

The device is designed for use in explosive atmospheres. It is intended for operation underground in mines and in surface areas of mines at risk of gas or dust explosions. Group I, Category M2 devices provide a high level of safety, and the device will shut off in the event of an explosive atmosphere.

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