NNT4-4/3875P Three Phase Voltage Regulator
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The NNT4-4/3875P three phase voltage regulator is applied in the heating industry like the industrial furnace, glass furnace, oven, petrochemical industry and shoe machinery.
Model explanation
Parameters of NNT4-4/3875P three phase voltage regulator
Applicable voltage | 11type:Three phase voltage AC85~120V---50/60Hz |
38type:Three phase voltage AC200~480V---50/60Hz | |
Load current | 25A/40A/75A/100A/125A/150A/200A/250A/300A/400A/500A |
Auxiliary power supply | PCB board working power supply:AC220V±10% 50/60Hz,Control terminal L/N has no zero wire zone and live wire zone. Three -phase four-wire connect the zero wire N synchronously.If the PCB connect with main control power supply, the device dose not need the auxiliary power supply. |
Phase-shifting angle | The central point of 0~150°delta-connected load or star-connected load (HHT4-4) dose not connect the wire. |
The central point of 0~175°star-connected load (HHT-4-5) connects the wire. | |
Over temperature alarm | The device will alarm when its temperature over 75℃. |
Input signal | 4~20Ma,0~10V signal |
Service environment | Temperature-10~55℃ Humidity below 90%RH |
Withstand voltage strength | AC2000V/1 minute(Among the heat sinks of the power supply) |
Insulation resistance | Above 20M Ω/500V(Among the heat sinks of the power supply) |
Output waveform diagram
Output quantity | Output waveform | ||
Control mode | 10%output | 50%output | 90%output |
Phase control |
Phase control:
Continuous intersection control, stable output, ampere meter dose not jitter, but each cycle the half-wave will generate harmonic wave.
Applicable load:
Three-phase half control, constant impedance load, far infrared, tubular IR lamp and silicon carbide rod.
Features
- The three phase voltage regulator has many kinds of control input signal(4~20MA/0~5V/0~10V/1~5V/2~10V,etc.), and user can choose it according to his demand.
- The voltage regulator has the modes of manual adjustment of internal and external power outputs + automatic adjustment.
- The three phase voltage regulator has the fuse open circuit indicator light/load short circuit,open circuit indicator light(optional)/SCR high temperature(75℃) indicator light and abnormity alarm connector.
- The device displays the percentage 0~100% of load output power.
- The three phase voltage regulator has the load buffering heat time(about 15 seconds).
- If the SCR over the rated temperature or the fuse burn-out the device will stop output, and just after the troubleshooting the device will restart output.
- The three phase voltage regulator is equipped with fast fuse to prevent the SCR from damaging, and the fuse can be dismounted easily.
- The voltage regulator has the heat sink with high efficiency which conducts the heat fast and has good heat dissipation.
- The mains frequency has the automatic surveillance function, the parameter in the 50~60Hz are available and dose not need any switch.
1. Product model specification, 2. control function, 3. indicating sticker, 4. control signal terminal indicating sticker, 5. main power source, 6. load protection cover, 7. fuse, 8. axial flow fan and heat sink.)
Exterior and installation size
Current A | Exterior dimension | Fixed dimension | Screw | Cooling method | ||||
Length L | Width W | Height H | D1 | D2 | W1 | |||
25 | 150 | 130 | 164 | 80 | 0 | 116 | M5,M6 | Natural cooling |
40 | 150 | 130 | 164 | 80 | 0 | 116 | M5,M6 | Forced cooling |
75 | 218 | 130 | 168 | 112 | 0 | 116 | M5,M6 | |
100 | 218 | 130 | 168 | 112 | 0 | 116 | M5,M6 | |
125 | 285 | 148 | 210 | 170 | 0 | 137 | M8 | |
150 | 285 | 148 | 210 | 170 | 0 | 137 | M8 | |
200 | 285 | 148 | 210 | 170 | 0 | 137 | M8 | |
250 | 335 | 275 | 240 | 112 | 112 | 265 | M8,M10 | |
300 | 335 | 275 | 240 | 112 | 112 | 265 | M8,M10 | |
※Above 400A is the customized product. |
Index
electric regulator, voltage stabilizer, electrical device
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