Field Failure Relay (Ffr)

Supplier: Diodes, thyristors, modules, igbt, bridge rectifiers, selenium rectifiers, selenium surge suppressors, rotating assemblies, field failure relay, dcr, ds
Buyer: Silicone chips, module kits like m1, m2, m3, bkw

The function of a capacitor in a fan is to store electrostatic energy in an electric field and where possible, to supply this energy to the circuit. The role of a capacitor in a fan is to prevent a dangerous failure of the circuit, they allow the AC to move but block the flow of DC. A condenser, also known as a capacitor, is used in a fan to help regulate the electrical current flowing through the mot. The function of the condenser in a refrigeration system is to transfer heat from the refrigerant to another medium, such as air and/or water. By rejecting heat, the gaseous refrigerant condenses to liquid inside the condenser. A condenser is an essential component within any HVAC system. Its purpose is to take in high-pressure refrigerant gas, emitted by the compressor, and convert it into liquid state. The refrigerant is cooled and then condenses at a virtually constant temperature and pressure. A capacitor can help a fan motor to run at a higher speed by helping to regulate the current flowing through the motor. A capacitor is connected to the start winding in a Fan. In low power induction motor like fan it is left connected permanently, so as the capacitor ages speed of Fan reduces.

JRS2(3UA) series thermal overload relay are suitable for overload and phase-failure protection of AC motors with frequency of 50/60Hz,voltage up to 690-1000v,current up to 0.1-400A under 8-hours duty or uninterrupted duty. Several functions provided by these relays are: phase-failure protection, temperature compensation, ON/OFF indication and manual/automatic reset. The relays can be mounted onto contactors or installed as single units.

8 Isolated digital input and 3 relay output * Support 8 isolated digital input channels * Input channel support max. 50Hz counter * Support 3 relay output channels (Form A) * Programmable Host Watchdog Timer For Host Failure Protection. * Support MODBUS And ASCII Format Protocol

EDAM-8067D 8-ch relay(0.5A/120Vac, 1.0A/24Vdc) Output module with LED display * 8-Channels relay Output * Normal Open Relay Output(Form A) * Relay contact rating 5A/120Vac,1A/24Vdc. * Programmable Host Watchdog Timer For Host Failure Protection. * Support MODBUS RTU And ASCII Format

EDAM-8066D 8-ch Photo-MOS relay Output module with LED display * 8-Channels Isolated Output * Normal Open PhotoMOS Relay Output * Typical applications: â?§ High-speed inspection machines â?§ Telephone equipment â?§ Data communication equipment * Programmable Host Watchdog Timer For Host Failure Protection. * Support MODBUS RTU And ASCII Format Protocol.

New SA - Series "Solid State Relay" can provide additional feature to traditional SSR. It equipped with 1) Thermal protector to prevent overheat. 2) Load failure LED indication to monitor the load condition. General Specifications : 1) Input : 3 ~ 32Vdc / 90 ~ 280Vac 2) Output Voltage : 90 ~ 280Vac / 90 ~ 440Vac / 90 ~ 660Vac 3) Output switching current : 10A ~ 125A 4) Switching Principle : Zero crossing / Instant turn on 5) Protection : Snubber filter, Over voltage protect, Over temperature protection 6) Input Indication : LED indication 7) Output Indication : LED load failure indication

Product nameï¼?3 Phase Relay Product Typeï¼?DPA53 Usageï¼?Protective Sizeï¼?Subminiature Protect Featureï¼?Sealed Contact Loadï¼?High Power Theoryï¼?Voltage Relay DPA53 series monitor for ultra-thin (17.5mm) rail mounting type, function: phase failure protection, phase sequence protection, voltage unbalance protection, adjustable set value undervoltage protection. It is suitable for the protection of the distribution system installed in the cabinet. I. Overview            DPA53 series three-phase relays for three-phase or three-phase four-wire power supply for the monitor. This series of products measuring their own supply voltage, regenerative voltage, with phase sequence protection, lack of protection, undervoltage protection and other functions, N-type products with zero line disconnection protection. DPA53 series monitor for the ultra-thin (17.5mm) rail mounting type, suitable for installation of the cabinet to install the power distribution system protection, such as: distribution cabinet, distribution box, electric control box, machine tools and other equipment.  Second, the input rated voltage:       200 ~ 240vAC ± 15% (line voltage) Model: DPA53CM23      320 ~ 480VAC ± 15% (line voltage) Model: DPA53CM48       115 ~ 138VAC ± 15% (phase voltage) Model: DPA53AM23N        220 ~ 277VAC ± 15% (phase voltage) Model: DPA53AM48N   Phase sequence monitoring: When the three-phase power monitor power, such as the phase sequence is normal, the relay can pull.         Phase loss monitoring: When the three-phase power monitor power, each phase power is normal, the relay can pull.         Undervoltage protection: When the three-phase power supply line voltage is lower than the set value, then the relay release protection; when the voltage recovery, the relay back to work properly.            N line disconnection protection: DPA53AM23N and DPA53AM48N is suitable for three-phase four-wire system power monitor, the two products in the N line when the relay release.

Introductionú¦ 1. Advanced SCM control system enables K3030 system to run steadily. 2. Simple internal design also contributes to steady system running 3. 1448 points waveform fitting is for every cycle, reaching the leading position at home, as has significantly improved the amplitude-frequency Characteristic and voltage-current transient/instantaneous response for the system, with the current transient response of 20 ª¦s. And the transient voltage response of 30 ª¦s, obviously exceeds the China national standard (200 ª¦s). Excellent transient response can be more suitable for the development trend of the new rapid digital type protection relay. 4. 20-digit serial D/A Converter is adopted, and the serial D/A Converter has better linearity and precision than the parallel D/A, greatly increasing the precision of voltage and current signal. 5. 40-220V/0.6A auxiliary DC power supply is under control of software, the power supply can individually provide working power to the protection device or other equipments. Ripple coefficient is less than 0.1% and accuracy is 0.5% Remarkú¦ 1.During the test, amplitude value, phase and frequency are continuously and arbitrarily adjustable with simple operation. Be able to test various types of AC/DC voltage relay, AC/DC current relay, frequency relay, power relay, impedance relay, harmonic relay, differential relay and synchronism relay about operate time and operate value by manual or by machine;Faults-Simulation enables users to calibrate fixed values of distance protection device and zero-sequence protection device. And fault simulations also lead to distance relay test of distance protection device and zero-sequence protection device. And K3066 can auto-scan the ratio restraint curve of differential protection in microcomputer and digital transformer as well as Generator-transformer Set. 2.The installation of particular heating radiator contributes to the reliable practicability of K3030.There are four high-power ventilating fans inside the Host. Thermal-shutdown is adopted to ensure the excellent stability & reliability of the amplifier even under long-playing working state along with high current. Current generator provides the function of open-circuit protection and open-circuit alert in itself. While Voltage generator possesses the functions of short-circuit protection, of output testing against waveform distortion, of Auto-recognition & Auto-alarming & Self-lock protection against misconnecting as well as the function of Dynamic Waveform Monitor&Display.. 3.Possess isolated input contacts, and the same case for idle contacts and electric potential contacts; and well adapt to various wiring installation. 4.Four voltage output channel, of which one channel is set as auxiliary DC supply by software, making it more convenient for field debugging. 5.Internal design is of architectural style framework and of shock & impact resistance external box made of high intensity aluminum alloy enables the equipment subject to rigid vibration 6.Be able to work as DC generator to provide Relay Protection Device with DC Voltage Generator(0í¡220V) 7.Direct edition on test report when using PC, and that scanning graph can be added into test report is useful for report analysis. Weight:24KG Dimensions:420ú¿Dú¬í-140 (W)í-360 (H) mm