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DC power supply source ElMetro-IPT 2/4
DC power supply source ElMetro-IPT 2/4 (hereinafter referred to as IPT-2/4 or the source) is designed to provide power supply of measuring transducers, sensors and other communications electronics equipment. IPT-2/4 enables conversion of 90-264 V network voltage into +24 V DC voltage. IPT-2/4 is equipped with two or four channels which are galvanically isolated between each other and power output.
Device description and working principle:
Working principle of power supply source is based on a scheme of a single-cycle pulse flyback converter which enables to increase the efficiency for the entire range of input voltages as well as to reduce the specific dimensions and weight.
In order to meet requirements to electromagnetic capability (EMC) and interference protection, input and output of power supply source are equipped with interference filters which protect internal circuits from external impacts and reduce noise level generated by pulse converter in the circuits of the power supply and the supply network.
Pulse converter is based on integral PWM-controller. Maintenance of output voltage with the required accuracy is provided by a line stabilizer which is equipped with protection against overheating and current overload.
The line stabilizer circuit is constructed in such a way as to compensate all losses caused by ohmic circuits of output interference filter.
Multichannel DC power supply source ElMetro-IPT 2/4 is intended for mounting on a 35 mm DIN rail. The front panel of the source includes (view Pic. 1. Front panel of power supply source ElMetro-IPT 2/4):
- 2 or 4 color (green / red) LED indicators (1) in dependence on configuration. Green indicator light displays if there is power supplied at the source output, whereas red indicator light signals emergency;
- 2 or 4 channel control keys (2) (on /off) in dependence on configuration;
- slots (3) for connecting external devices.
Number of channels is determined by the source configuration and should be pointed out in order code, view Pic. 2. Order code of ElMetro-IPT 2/4.
Technical characteristics and advantages:
- Number of output channels: 2 or 4.
- Removable terminal block.
- Permissible error of output voltage: +1...3% of nominal voltage 24 V.
- Permissible error of output voltage at temperature changes per each 10 °С: not more than ±0.15% (150 ppm/°С).
- Voltage regulation:
- for voltage changes between 90 and 264 V – not more than ±0.2%;
- for smooth changes of load current between zero and maximum value - not more than ±0.1%;
- for sudden changes of load current at 20% of nominal value– not more than ±1% (under t > 1 ms).
- Output voltage ripples within following frequency ranges:
- 47...10000 Hz: not more than ±5 mV;
- 10...1000 kHz: not more than ±24 mV.
- Power supply source is equipped with electronic current limiting protection. Electronic protection is activated at (65±10) mA current.
- Compliance with HART protocol specifications on noise level.
- Maximum power consumption:
- 4-channel type: not more than 17 W;
- 2-channel type: not more than 11 W.
- Operation mode setup-time: not more than 15 s.
- Electrical isolation:
- 2000 V between output electric circuits and power supply circuit, between output electric circuits and grounding terminal;
- 1500 V between power supply circuit and grounding terminal;
- 1000 V between output electric circuits and power supply circuit, between output electric circuits and grounding terminal.
- Electrical resistance of isolation between output electric circuits and power supply circuit, between output electric circuits and housing, between power supply circuit and grounding terminal under working voltage 500 V are not less than:
- 20 MOhm under ambient temperature (20±5) °С and relative humidity from 30% to 80%;
- 5 MOhm under ambient temperature (50±3) °С and relative humidity from 30% to 80%;
- 1 MOhm under ambient temperature (25±5) °С and relative humidity above (90±3)%.- Requirements to electromagnetic capability (EMC) и interference resistance:
- interference emission of the source corresponds to requirements of GOST R 51522-99 (IEC 61326-1-97) for equipment of class A.
- interference emission at the source output corresponds to requirements of GOST R 51318.22- 99 (CISPR 22 - 97) for information technology equipment of class B.
- power supply source is resistant to electrostatic discharges in accordance to GOST R 51317.4.2-99 (IEC 61000-4-2-95).
- 2nd test severity level (4 kV contact discharge). Criterion B.
- power supply source is resistant to radio-frequency electromagnetic field under 80-1000 MHz in accordance to GOST R 51317.4.3-99 (IEC 61000-4-3-96), 2nd test severity level (3 V/m). Criterion A.
- power supply source is resistant to nanosecond pulse interferences in accordance to GOST R 51317.4.4-99 (IEC 61000-4-4-95), 3rd test severity level. Criterion A.
- power supply source is resistant to microsecond pulse interferences of high energy in power supply circuits and could withstand test amplitude of 2 kV under "wire-to-earth" interference or 1 kV under "wire-to-wire" interference in accordance to GOST R 51317.4.5-99 (IEC 61000-4-5-95).
- power supply source is resistant to radio-frequency conducted interference of 150 kHz – 80 MHz in accordance to GOST R 51317.4.6-99 (IEC 61000-4-6-96) - 3rd test severity level (10 V/m rms value). Criterion A.
- Power supply source is resistant to dynamic changes in power network voltage and can withstand the following test actions in accordance to GOST R 51317.4.11-99 (IEC 61000-4-11-94):
- voltage dips with test amplitude of 0.7 Upow within 100 periods (2000 ms);
- voltage swells with test amplitude of 1.2 Upow within 100 periods (2000 ms);
- voltage failures with test amplitude of 0.0 Upow within 10 periods (200 ms) under load voltage 4х50 mA.
- Power supply source operates with any kind of load capacitance.
- Nominal output power of the source is not less than 1.2 W per a channel.
- Ingress Protection Rating: IP20.
- Ambient temperature: from -25 to +60 °С.
- Reliability:
- mean time between failures: not less than 50 000 h.
- average life-time: not less than 12 years.
- Guarantee commitment: 2 years.
- Weight: not more than 0.25 kg.
- Overall dimensions are listed in Pic.3 and Pic. 4 – Overall dimensions of power supply source ElMetro-IPT 2/4.
Supply package:
- Standard supply package: power supply source (1 pc.); product certificate (1 pc.); manual instruction (1 pc.).
Application:
The power supply source is applied to power following instruments of ElMetro-Engineering LLC production: multiparameter Coriolis flowmeter ElMetro-Flomac, ultrasonic gas flowmeter ElMetro-DRU, input/output module ElMetro-IOM, pressure gauges and etc.
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To make enquiry and get a commercial offer on power supply sources ElMetro-IPT 2/4 of the Russian manufacturer ElMetro company, please, send us product order code (view codes description in manual instruction) to e-mail: info@elmetro.ru or contact us via tel.: +7 (351) 220-06-01. To discuss technical questions, please, refer to technical support tel.: +7 (351) 220-06-03.