HPS-1D High-frequency switching transformer rectifier

タイトルまたは説明

HPS*1D high-frequency switching transformer-rectifier

1. General

HPS*1D high-frequency switching transformer—rectifier is mainly used in impressed current cathodic protection system to protect metal structures and equipments, such as pipeline, cables and tanks and so on.

2          Production Features

2.1      The power conversion has adopted high-frequency switching power supply technology with the features of noiselessness, low ripple, fast response and reli­ability.

2.2      Redundant structure, there are two units which are standby mutually in TR. The TR will switch to spare unit when there is fault in operating unit.

2.3      The TR has been provided with automatic switching function of operation mode.

2.4      The TR has been provided with functions of anti-jamming and anti-lightning to increase the reliability greatly.

2.5      The TR has been provided with self-test function that is convenient for distin­guishing the causes of fault.

2.6      The TR has adopted key-press operation. Multi-parameters and operation state can be showed by LCD. Operation and control are simple and intuitive.

2.7      The TR can adapt to fast interrupt test.

2.8      The TR has been equipped with point-to-point ports and RS**5 port by which the TR can be connected with computer to transmitting and controlling data remotely.

3          Technical Index

3.1      Power: Single phase **0V ± *0% or three phase **0V ± *0%, Frequency *7.5 Hz~*3 Hz.

3.2      Basic characters

3.2.1 Adjustable ranges of output voltage and output current: 1% ~ **0% of rated value.

3.2.2 Ripple Coefficient: Ripple coefficient is not more than 2% when TR is operat­ing on rated output state.

3.2.3 Range of constant potential: The constant potential is consecutive and can be regulated in the range of OmV — ***0mV.

3.2.4 Constant potential precision: The error between controlled potential and pro­tective potential is less than 5mV.

3.2.5 Reference impedance: more than 2 MQ.

3.2.6 Resist AC interference: The mutative value of protective potential is less than 5mV when inflicting AC*0V *0Hz interference voltage.

3.2.7 Setting range of constant current: 1 % ~ **0% of rated value of output cur­rent.

3.2.8 Constant current precision: better than 2%.

3.2.9 There is self-test function in TR.

3.2.*0            The TR has been provided with automatic switching function.

3.2.*1            Recovery function: The TR can still work at the protective current which has been set before when power has been recovered.

3.2.*2            On-off test: There are internal control system and telecontrol system to make the TR into on-off test. The time base of on-off test can be set by TR itself. The setting ranges of making time and break time are 0.1 ~ *9s. The setting ranges of on-off alternating frequency is 1 ~ *9.

3.3      Protective function: The TR has been provided with protections against over­current, undervoltage, overheating, lightning, reversed polarity and function of alarm when there is fault, etc.

3.4      Data storage

The following data can be saved and exported by USB port on the panel: DC output voltage, DC output current, protective potential, given potential, given cur­rent (constant current operation mode), operation mode (constant potential/constant current/on-off test), alarm and alarm type (overvoltage, overcur­rent, overprotection, overheating), operation state (stop/run), data recording time.

3.5      Operation and display interface

3.5.1 {C}Operation interface

The TR has adopted key-press operation, "constant potential" , “constant cur­rent" ,“operate” , “self-test” , “startup/shutdown” and data output can be set by shortcut keys; the other parameters can be set by each function key.

3.5.2 Display interface

3.5.2.1           The TR is equipped with LCD of which precision is better than 0.5% to dis­play the following data: DC output voltage, DC output current, protective potential, given current, alarm type, operation mode (constant potential/constant current/on-off test), operation state (stop/run).

3.5.2.2           Input voltage is displayed by digital meter.

3.6      Teletransmission and telecontrol functions

3.6.1 By point-to point ports, the following data can be transmitted remotely: output voltage, output current, protective potential, operation state (stop/run). The following data can be controlled remotely: given potential, operation mode (constant potential/constant current/on-off test), stop/run.

3.6.2 By RS**5 port, the following data can be transmitted remotely: output volt­age, output current, protective potential, given potential, given current (constant current operation mode), operation mode (constant potential/constant current/on-off test), alarm and alarm type (overvoltage, overcurrent, overprotec­tion, overheating), operation state (stop/run), data recording time. The following data can be controlled remotely: given potential, given current, operation mode (constant potential/constant current/on-off test), stop/run.