12V 7000A High Power Rectifier for Hard Chrome Plating

Product Description

STP Series Electroplating DC Rectifier Model: STP - 012 - 7000TW
Power range: 84 KW Voltage range: 0 ~ 12V Current range: 0 ~ 7000A Industrial grade anticorrosive cabinet. Precise voltage and current setting and measurement capabilities Small size, high efficiency and low energy consumption. OVP, OCP, OTP and short circuit protections etc. CE certified
Overview
STP series DC rectifier is a rectifying type DC power supply based on high frequency switching technology of IGBT switching components. It is a product specially developed by our company for industrial applications such as electroplating, electrolysis, water treatment and hard oxidation. Compared with the traditional thyristor rectifying power supply, this series of rectifier power supplies can reduce the clients' power consumption by 20%~30%. In order to overcome the harsh environment of the applications and the long-term running conditions, the rectifier power supply is basically water-cooled, also the three-proof treatment adopted for the internal components which can achieve effective heat dissipation of the power supply and protection of the internal components of the rectifier. This series rectifiers can cover all the above-mentioned applications, featured for complete control functions, stable performance and high cost performance.
Features
Isolated input and output for safe operation. Advanced soft-switching technology and multi-loop control adopted to ensure output precision & stability. High-power isolated gate bipolar IGBT & Nano scale material high frequency transformer adopted. Output voltage & current separately adjustable. CC voltage-limit / CV current-limit working modes, manual-switchable. High efficiency, full protection functions, like lack phase, over voltage, lack voltage, short-circuit, over current and over heat protection. With RS485 communication interface, in line with MODBUS-RTU communication protocol. Small size & Low weight.
Optional functions
LCD touch screen (+LCD) 0 ~ 5V / 0 ~ 10V / 4 ~ 20mA analog signal control. (DB port) (+AC) RS communication interface (RS232 / RS485 optional) (+RC) Timing function (+TM) Pulsing output (+PULSE) Polarity reverse function (+RP) N+1 redundant design (>100KW) (+N1)
Application
Electroplating Water treatment Electrolysis Oxidation Heating
Specifications
Input	Voltage		Three-phase 380Vac±10%, 50/60Hz (default) Three-phase 415Vac±10%, 50/60Hz (optional) Three-phase 440Vac±10%, 50/60Hz (optional) Three-phase 480Vac±10%, 50/60Hz (optional)
	Frequency		50Hz/60Hz±5%
	Power		Depends on output power rating
	Current		Depends on output power rating
Output	Rated power		84 KW
	Output voltage adjusting range		0V ~ 12V
	Output current adjusting range		0A ~ 7000A
	CC (constant current) accuracy		≤±1%
	Efficiency		≥90% (measured @ 80%-100% resistive loading)
	Power factor		≥0.92
	Working ability		Withstand long-term continual working at full-loading.
Setting & Display	Control mode	Local	10-turn potentiometer (default) LCD touch screen (optional).
		Remote	RS485 communication interface. In line with MODBUS-RTU standard. (optional)
	Display mode		Digital LED (default) LCD touch screen (optional) Touch screen display items as below: Real-time working state display (fault state, running state, stop state, over heat state.) Working mode display (CV / CC) Output voltage / current display. Power supply system and fault information queriable.
	Display accuracy	Voltage	≤±1%
		Current	≤±1%
	Operation panel control function		Output start / stop switch Constant voltage / Constant current state transfer switch Local / Remote transfer switch (available for units equipped with remote control)
	Operation panel indication		Working / Fault / Overheat indications (LED)
General features	Working principle		PWM
	Working mode		CC voltage-limit / CV current-limit working modes, manual switchable.
	Cooling method		Water cooling
	Protection measures		Half-sealed air duct, three-proof treatment for circuit boards.
	Cable I / O		Cable entry from front, exit from back.
	Noise		≤65dB
Protection & Monitoring functions	Input protection		Input lack voltage and lack phase protection.
	Output over voltage protection (OVP)		Rectifier automatically cuts off output and alarms when output has over voltage.
	Output over current protection (OCP)		Rectifier automatically cuts off output and alarms when the output has over current.
	Over temperature protection (OTP)		Rectifier automatically cuts off output and alarms when the internal temperature of the rectifier exceeds OTP threshold value.
	Output short-circuit protection		Rectifier automatically cuts off output and alarms when the output has short-circuit.
Working conditions	Ambient temperature		0ºC~45ºC
	Humidity		10%~90%(non-condensing) No flammable, corrosive object, no vibration & explosion
	Height		≤2000m
Size (W*H*D) (mm)			Refer to "Model list"
Technology advantages
Using advanced soft switching inverter technology, the main control system adopts unique multi-loop control technology to ensure good reliability and high-precision control performance. The main high-frequency transformer uses nano-based materials, with imported high-power insulated gate bipolar transistor "IGBT" modules as the main power component, the high-quality materials ensure the good quality. Advanced heat dissipation design concept, multiple heat dissipation methods are complementary to ensure the product's high efficiency and stability. Fully digital design with MCU and DSP as CPU for more precise control, supports bus control of central control power system setup to facilitate management and improve efficiency. Modular switching power supply design, through N + 1 parallel redundant power supply system, to achieve capacity expansion, improve the reliability and practicability of power supply system, shorten repair and maintenance time, and brings enterprises greater benefits. Select the suitable topology circuit form according to different needs, and design a reasonable power margin to ensure long-term stable operation.
Main components
IGBT
Infineon (the original Siemens) IGBT module.
Three-phase bridge rectifier
SANREX bridge rectifier.
Main Transformer
High-frequency Nano crystalline transformer. The transformer is a case type structure. This case is not only the protective layer, but also the output of the transformer, and it also can provide cooling water channel. Another advantage is its large conductive area, small heat. Because the transformer adopts the novel structure, the conformity of production produced is high; it is especially suitable for high power supply manufacturing.
Output rectifier diodes
AN (original Motorola) Schottky.
Heat sink
Good quality aluminum panel, thickness up to 42mm
Output copper bar
99.9% non-oxidation red copper, designed flow ability beyond 2.5A/m^2
Cooling water pipe
RIFENG aluminum plastics compound pipe.
Breaker
CHNT or Internationally recognized brand Air circuit-breaker.
Cabinet
2cm thick good cold-rolled sheet with powder coating for cabinet making.
Maintenance
Check whether the bolts or moisture loosen regularly Check whether water leakage at pipe connection regularly Check whether any leaking of water pipe connection regularly. Regularly open the box side plate, cleaning dust inside. Regularly with clip-on ammeter check three-phase input current that it is abnormal and serious drift phenomenon, if abnormal, contact the supplier in time. Specially assigned person for equipment maintenance.
Installation environment
Ambient temperature: Please have the power source working in safe temperature range (0ºC ~ 45ºC) or it would affect life of power source. Please install the power source at least 50cm distant from surroundings to have better ventilation. Please install the power source away from vibration (less than 0.6G), especially equipment like puncher. Keep the power source away from direct sunshine, humidity or place with water globule. Keep the power source from corrosive, flammable & explosive gas. Keep the power source away from oil stain, dust & metallic dust.