25 Hp (18.5 KW) VFD, 3 Phase 240V, 420V, 480V

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$992.18

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Stock: In Stock
Model: GK3000-4T0185G
Weight: 1.00
SKU: GK3000-4T0185G

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Input Voltage (Three Phase) ±15%

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25 hp (18.5 kW) high performance variable frequency drive, three phase 240V, 420V, 480V for selection, IP20 enclosure.

Specification:

Basics	Model	GK3000-4T0185G/ GK3000-2T0185G
	Capacity	25 hp (18.5 kW)
	Shipping weight	8 kg
	Dimension	330200200 mm for GK3000-4T0185G/ 530320235 for GK3000-2T0185G
I/O Feature	Rated current	37A at 380V ~ 480V, 75A at 220V ~ 240V
	Input voltage	3 phase 240V /420V /480V AC ±15% (Optional)
	Input frequency	50Hz/ 60Hz
	Output voltage	3 phase AC 0~input voltage
	Output frequency	0Hz~1000Hz
	Over load capacity	150% of rated current for 1 minute, 180% of rated current for 3 seconds
Control Feature	Control mode	V/F control; Sensorless vector control;
	Communication	RS485
	Speed regulation	1:100
	Start torque	150% of rating torque at 1 Hz
	Speed control accuracy	≤±0.5% of rating synchronous speed
	Frequency precision	Digital setting: max frequency x± 0.01%; Analog setting: max frequency x± 0.2%
	Frequency resolution	Analog setting: 0.1% of max frequency; Digital setting: 0.01Hz
	Torque boost	Automatic torque boost, manual torque boost 0.1%~30.0%
	Interior PID controller	Be convenient to make closed-loop system
	Automatic energy save running	Optimize V/F curve automatically based on the load to realize power save running
	Automatic voltage regulation (AVR)	Can keep constant output voltage when power source voltage varies.
	Automatic current limiting	Limit running current automatically to avoid frequent over-current which will cause trip
Environment	Enclosure rating	IP 20
	Temperature	–10℃~ +40℃; VFD will be derated if ambient temperature exceed 40℃; each rise 1℃, the derate will be 5%
	Humidity	5%-95%, without condensation
	Altitude	≤1000m; VFD will be derated if above 1000m
	Impingement and oscillation	Normal running:<5.9m/s2 (0.6g); Transportation:<15m/s2 (1.5g)
	Store environment	–20℃~ +60℃; no dust, no corrosive gas, no direct sunlight

Note: RDDLZ VFD Cannot be used as a power source, it Can only be directly connected to an induction motor to control the motor speed.

Tips: Variable frequency drive undervoltage
The undervoltage is a problem that we often encounter in using VFD. It is mainly because of the main circuit voltage is too low (220V series below 200V, 380V series below 400V). The main reason: One circuit of rectifier bridge damage or one circuit of SCR does not work correctly, all these can lead to undervoltage. Moreover, the main circuit contactor damage resulting DC bus has voltage loss in the charge resistance may lead to undervoltage. And the voltage detection circuit failure may also cause undervoltage problem.
For example, a 25hp VFD displays "Uu" after power on. Check the rectifier bridge charge resistance and find no problem, but haven't heard a sound of the contact action after power on. Because this VFD charging circuit doesn't use SCR but depend on the contactor attracting to complete the charging process, so that the failure may be caused by the contactor, control circuit or power supply. Remove the contactor, and individually connect 24V DC, the contactor is working properly. And then check the 24V DC power supply and find the voltage regulator tube is damaged. After replacing it, VFD is working properly.

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