Customization: | Available |
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Current Type: | AC |
Phase: | Three Phase |
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China PA300B Three Phase display power regulator
PA300B User Manual
1. Reference for selecting the current capacity of the power regulator
General pure load: The current capacity of the power regulator should be greater than the maximum current of the load
Silicon carbon rod load: When the transformer is cancelled, the silicon carbon rod should be connected in series so that it can withstand more than 70%~80% of the power supply voltage. Silicon carbon rods have a negative resistance zone at 700-800ºC, and the current capacity of the power regulator should be greater than 1.7 times the maximum current of the load.
Electric heating tube load: The electric heating tube is susceptible to moisture, local short circuit and discharge sparking, etc. The current capacity of the power regulator should be greater than 1.7 times the maximum current of the load.
Transformer load: It should have a current limiting function, and the current capacity should be greater than 2-2.5 times the maximum current of the load.
The current capacity should be increased for special loads, please state it when ordering.
2. Ordering example: PA300B-I-3-100-A-O-M
Indicates: PA300B series three-phase intelligent power regulator; input signal is 4-20mA; load is triangle or star center not grounded; load rated current is 100A; has overcurrent protection current limiting function; manual function is valid; can be manually switched control.
PA300B Series
Two working modes: voltage regulation and frequency division zero-crossing power regulation
With slow start, slow shutdown, and adjustable slow start time
Additional current limitation, overcurrent protection and other functions
Control input range | |
Current input | 4~20mA DC |
Input impedance | 120Ω |
Load rated voltage range | |
220V | 220V AC±10% 50HZ |
380V | 380V AC±10% 50HZ |
Rated current and cooling method | |
Natural cooling | 20A, 30A, 50A |
Forced air cooling | 80A, 100A, 150A, 200A, 250A, 300A,350A, 400A, 450A, 500A, 600A, 800A |
Standard functions | |
Control mode | voltage regulation (without feedback function) |
Slow start time range | Adjustable range 0.2~120 seconds |
Slow shutdown time range | Fixed 15 seconds slow shutdown |
Output voltage control range | No feedback type... Rated voltage 0~98% Current feedback type... Rated current 0~100% Frequency division control method... Rated voltage 0~100% |
Output slope setting | Output range 0~100% |
Output cutoff setting | Output range 0~100% |
Output manual setting | Output range 0~100% |
Output stability | When the input fluctuation is ±10%, the output fluctuation is less than ±2% |
Adjust output resolution | 0.6° |
Three-term trigger imbalance | ≤0.6° |
Applicable load type | Resistive load (resistance wire, far-infrared heating tube), variable resistive load, (silicon carbon rod, graphite), inductive load (transformer) |
Load mode | Delta or star center not grounded Phase shift range: 0~120° Star center grounded (220V load) Phase shift range: 0~120° Half-air rectifier bridge Phase shift range: 0~120° |
Phase discrimination | Automatically distinguish R-S-T three-phase |
Short circuit protection (external) | When the current exceeds 130~150% of the rated current, the fast fuse blows. |
Sampling cycle | control signal 10 times/second, load current 50 times/second |
Alarm monitoring and action | |
Overcurrent alarm (effective when current feedback) | The status light is red and the alarm relay is activated |
Relay contact capacity | 250V AC resistive 3A, inductive 1A |
Operating environment | |
Ambient temperature range | -10°-50ºC (daily average temperature exceeds 40ºC) |
Ambient humidity | ≤90%RH |
High altitude | Over 1000 meters, the air density should be reduced and the rating should be reduced |
Insulation resistance | Minimum 20MΩ 1000VDC |
Insulation strength | 2500VDC 1 minute |
Manual adjustment potentiometer | 10KΩ /2W |
Model code | ||||||||
PA300B | Three-phase intelligent power regulator | |||||||
Control input signal | I | 4~20mA DC Input impedance: 120Ω | ||||||
X | Other signals (specify when ordering) | |||||||
Load connection method | 2 | Star ground | ||||||
3 | Delta connection or star ungrounded | |||||||
T | Special working voltage and load connection | |||||||
Rated current | 20 | 20A | ||||||
30 | 30A | |||||||
50 | 50A | |||||||
80 | 80A | |||||||
100 | 100A | |||||||
150 | 150A | |||||||
200 | 200A | |||||||
250 | 250A | |||||||
300 | 300A | |||||||
400 | 400A | |||||||
450 | 450A | |||||||
500 | 500A | |||||||
600 | 600A | |||||||
800 | 800A | |||||||
Overcurrent protection | N | No feedback type (standard) | ||||||
A | Current feedback type (overcurrent protection function) | |||||||
Power and voltage regulation conversion | 0 | Voltage regulating type (standard) | ||||||
1 | Voltage regulation type + power regulation type | |||||||
External function selection | N | None (standard) | ||||||
M | Manual function is invalid | |||||||
Fuse | N | None | ||||||
G | Fast Melt |
Q1.Can you provide price sheet and catalog to me ?
We are pleasure to provide these to you for reference,you can cotact me,give me your emails ID.
Q2.Can I get some samples?
Yes,Sample order is available for quality check and market test .but you need to pay the sample fee and shipping cost
Q3.How long is your lead time?
2-3 days for the stocks items, mass production generally needed 1-2 weeks.
Q4.What's your payment terms?
We usually accept all kinds of payment terms.Such as T/T,L/C,Western Union.Cash.
Q5.What's your warranty terms?
We offer 12 months warranty time.
Q6.Do you have the products in stock?
Depends on your request,We have standard models in stock.Some special products and big order will be newly produced according to your order.
Q7 How about your payment and shipment?
Payment: We accept T/T, Western Union, Paypal, Cash etc.
We usually ship via DHL, UPS, FedEx or TNT, SF for small order and via ocean for bulk order according to your requirement.
Q8.How does your factory do the quality control?
Quality is priority,we always attach the importance to quality control from the beginning to the end of the production.every product will be fully assembled and carefully tested before packing and shipping.