ZI2-12 Intrinsically Safe Power Supply
Intrinsically safe power supplies are critical in industrial environments where the risk of sparks or electrical discharges could lead to hazards related to 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. These measures eliminate the risk of igniting flammable gases, which is crucial in industries such as chemicals, oil, and mining.
Description
The ZI2-12 intrinsically safe power supply is designed for the safe powering of electrical devices in Group I, Category M1, and M2, working in areas at risk of methane explosions, supplied from a single-phase 230 VAC network. The power supply is intended for installation on the surface in non-hazardous methane areas, inside control boxes or cabinets.
The design of the power supply complies with the requirements of the following standards to achieve the necessary intrinsic safety for the output:
PN-EN 60079-0:2013-03 + A11:2014-03: Explosive atmospheres – Part 0: Equipment – Basic requirements
PN-EN 60079-11:2012: Explosive atmospheres – Part 11: Equipment protection by intrinsic safety “i”.
Key Features
Output Circuit for Group I Devices (Category M1 and M2): The ZI2-12 power supply supports both M1 and M2 category devices, making it a versatile solution for powering different types of equipment in explosive environments.
Two-Position Diagnostic Output: The two-position diagnostic output enables monitoring of the power supply’s operation, providing feedback on its status, which helps diagnose potential issues and plan maintenance.
Short-Circuit Resistance: The power supply is resistant to short circuits, ensuring reliable operation and minimizing the risk of failure due to short circuits in the system.
TS-35 Rail Mounting: The power supply is designed for easy mounting on a TS-35 rail, simplifying installation and integration into electrical systems.
Compliance with Safety Standards: The power supply complies with relevant safety standards such as ATEX.
Environmental Resistance: The power supply is resistant to conditions present in explosive environments, such as moisture, dust, vibrations, and temperature fluctuations.
Intelligent Protection Systems: The power supply is equipped with intelligent protection systems, including surge, short-circuit, and thermal protection, enhancing its reliability and safety.
Long Lifespan: High-quality components and a robust construction ensure the power supply has a long lifespan, reducing maintenance and replacement costs.
Specification
Nominal Input Voltage: 230 VAC
Permissible Input Voltage Range: 170 ÷ 255 VAC
Maximum Input Voltage: 255 VAC
Nominal Output Voltage: 11.5 ÷ 12.5 VDC
Nominal Output Current: 1 ÷ 1.1 A
Maximum Output Voltage: 13.5 VDC
Maximum Output Current: 1.75 A
Maximum Output Power: 23.6 W
Maximum External Capacitance: 19.4 μF
Maximum External Inductance: 40 μH
Nominal Diagnostic Circuit Voltage: 24 VDC
Maximum Diagnostic Circuit Current: 35 mA
Enclosure Protection Rating: IP 20
Operating Temperature Range: 0°C ÷ +55°C
Dimensions: 100 x 76 x 110 mm
Weight: 0.44 kg
Certification: I (M1) [Ex ia Ma] I
Type Approval Certificate: OBAC 18 ATEX0248X
Ex Zone
The device is designed for use in explosive atmospheres. It is intended for underground mining operations and surface mining areas where there is a risk of gas or dust explosions. Group I, Categories M1 and M2 – designed for mining facilities exposed to methane and coal dust, ensuring a very high level of safety with two independent protective measures. The device is deactivated if an explosive atmosphere is detected.
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