Nanjing

Building 11, Phase 3, Liandong U Valley, No. 7 tonglian Road, Jiangning District

Name： constant current power supply

Date：2019-05-05

constant current power supply

Product introduction： Eastchanging Technology Co., Ltd. is the only company in China that produces linear power supplies. The constant current power supplies produced by Eastchanging are high-precision bipolar constant current power supplies that use high-performance fully digital control and are widely used for exciting inductive loads such as electromagnets and Helmholtz coils. Continuous zero crossing of current, contactless commutation, can generate a smooth and stable controlled magnetic field.

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Overview
Specifications
Parameter

Eastchanging Technology Co., Ltd. is the only company in China that produces linear power supplies. The constant current power supplies produced by Eastchanging are high-precision bipolar constant current power supplies that use high-performance fully digital control and are widely used for exciting inductive loads such as electromagnets and Helmholtz coils. Continuous zero crossing of current, contactless commutation, can generate a smooth and stable controlled magnetic field.

By using a built-in Gaussian meter (optional) to form a high-precision magnetic field platform, continuous field scanning, fast commutation, and control of current or magnetic field modes can provide users with a simple and convenient form of use and control.

恒流电源

Function and Features

1) Can provide two control modes that can adapt to different application environments:

Set through keyboard.

Controlled by a computer through the RS23 interface.

2) Multiple protection functions. Considering multiple factors such as mains power status, cooling status, and module working status, comprehensive protection is provided for the power supply, and the fault status is directly displayed on the LCD screen, making it convenient for users to check the cause.

Input power failure protection (internal protection absorbs inductive load backflow energy)

Internal overheating protection (unable to turn on output, automatically shuts off output if it occurs during operation)

Module overcurrent (automatic current reduction, output will be turned off if uncontrollable overcurrent occurs)

Module over power (automatically limits output current, if uncontrollable over power occurs, output will be turned off)

3) Two output modes

Current mode: directly set the current loaded on the load

Magnetic field mode: directly set the size of the magnetic field in the magnet or coil

Attention: The magnetic field mode needs to be combined with our company's self-developed high-precision built-in Gaussian meter in order to operate in the magnetic field mode

4) Bipolar output

Four quadrant operation of output current and voltage (suitable for inductive loads)

The output current change rate is 0.0007-0.5 FS/S (FS is the rated maximum output current). For reactive loads, the power supply automatically adjusts and limits the output rate based on current and power.

Non output switch commutation allows for smooth zero crossing of current.

5) As a series, P can choose different input and output parameters according to the different application loads

Current stability of 50ppm/h (standard type) or 10ppm/h (high stability type) is optional

Output power from 0.5kW to 15kW

Output current from 5A to 120A

Output voltage from 40V to 120V

Specification Description:

Series P5 P10 P15 P20 P70 P90

Model P5-40 P5-80 P10-40 P10-80 P15-40 P15-80 P20-40 P20-80 P70-50 P90-60

Output rated current Ir (A) ± 5 ± 10 ± 15 ± 20 ± 70 ± 90

Rated voltage Ur (V) ± 40 ± 80 ± 40 ± 80 ± 40 ± 80 ± 40 ± 40 ± 40 ± 80 ± 50 ± 60

Output method: Bipolar constant current output

Current setting resolution of 20 bits

0.01mA 0.02mA 0.03mA 0.04mA 0.13mA 0.17mA

Current accuracy set at 0.02%

± 2mA setting 0.02%

± 2mA setting 0.02% ± 2mA setting 0.02% ± 2mA

Current ripple (RMS) 1mA 1mA 1mA 1mA 2mA 2mA

Load effect 2.0 × 10-5Ir (test the change in output current under a 10% Ur change in output voltage caused by load variation)

Source effect 1.0 × 10-6Ir (test output current change under a 10% change in supply voltage)

The standard version of current stability is better than ± 25ppm; The high stability version is better than ± 5ppm;

Current change rate setting range 0.0017-0.5 Ir/s

Load resistance (Ω) ≥ 0 ≥ 1.6 ≥ 0.4 ≥ 2.4 ≥ 0.6 ≥ 1.9 ≥ 0.6 ≥ 1.5 ≥ 0.1 ≥ 0.1

Inductance (H) 0-1

Input power supply single-phase three wire three-phase five wire

Voltage (AC) 220 ± 10% 380 ± 10%

Power (KVA) 0.3 0.5 0.5 1 0.75 1.5 1 2 4.5 7.2

Cooling environment temperature (℃) 0-30 0-40

Cooling method: air-cooled and water-cooled

Cooling power (KW) \ 5 8

Flow rate (L/min) \ 3

Interface form \ Stainless steel quarter outer teeth

Inlet temperature (℃) \ 19-23

Cable input wire diameter (mm2) 10A standard power cord 4

Output wire diameter (mm2) ≥ 2.5 ≥ 4 ≥ 35

Dimensions (mm) 450 * 610 * 190

(Chassis) 600 * 700 * 1300

(Cabinet)

Weight (KG) 20 21 20 21 20 21 20 21 115

built-in

Gaussian meter

(Optional) Range (Gs) ± 30000.00

Resolution (Gs) 0.01

Noise (Gs) ± 0.05

Corresponding electromagnet, please click on: EM series electromagnet

Main specifications of electromagnetic power supply: P1040 electromagnetic power supply, P7050 electromagnetic power supply, P9060 electromagnetic power supply

Last：NONext：Electromagnetic magnetic field control p

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