| Brand | RW Energy |
| Model NO. | GD1000 series shearer special frequency converter |
| Rated frequency | 50/60Hz |
| Series | GD1000 |
Overview
GD1000 series coal machine special frequency converter is a frequency conversion transmission unit with exquisite structure and superior performance, which is widely used in mining industry coal shearers, continuous mining machines, shuttle trucks and other fully mechanized mining equipment.
Product features
Perfectly integrate the integrated design of coal machinery equipment to save space;
Clear interface, intuitive and easy to operate;
Professional and rigorous vibration test, excellent seismic performance;
The surface sticker structure is easy and fast to install;
Professional drive technology ensures core performance;
Multiple protections for worry-free operation.
Specifications
Product Type: |
GD1000-01 series |
GD1000-31 series |
|
Function description |
Specifications |
||
input |
Rated Input Voltage (V) |
AC 3PH 1140v（-15%~+15%） |
|
Rated input frequency |
50Hz/60Hz, allowable range 47~63Hz |
||
Rated Input Efficiency (%) |
More than 98% |
||
Rated input power factor (%) |
0.85 or higher |
0.99 or higher |
|
output |
Rated Output Voltage (V) |
0~input voltage |
|
Output frequency |
0~400Hz |
||
Operational control characteristics |
Control mode |
V/F (with V/F separation function), open-loop vector, closed-loop vector |
|
Motor parameters are self-learning |
Support motor stationary self-learning and rotation self-learning |
||
speed regulation range |
Closed-loop vector: 1:1000; open-loop vector: 1:100 |
||
Speed control accuracy |
Closed-loop vector: ±0.1% maximum velocity; Open-loop vector: ±0.5% maximum speed |
||
Speed fluctuations |
±0.3% (open-loop vector control); ±0.1% (closed-loop vector control) |
||
Torque control accuracy |
10% (open-loop vector control); 5% (Closed-loop vector control) |
||
Starting torque |
0.5Hz 150% (open-loop vector control); Zero frequency 180% (closed-loop vector control) |
||
DC braking |
DC braking at start, DC braking at shutdown |
||
Overload capacity |
150% rated current 60s, 180% rated current 10s |
||
Protection function |
Motor overheat protection, overload protection, overvoltage protection, undervoltage protection, input phase loss protection, output phase loss protection, overcurrent protection, overheat protection, overvoltage stall protection, overcurrent stall protection, short circuit protection and other protection functions |
||
Peripheral interface |
Analog input |
1 channel (AI1, AI2) 0~10V/0~20mA |
|
Analog output |
2 channels (AO1, AO2) -10~10V /-20~20mA |
||
Digital input |
It comes standard with 5 digital inputs |
||
Digital output |
Standard 2 relay outputs, electric shock capacity: 3A/AC250V, 1A/DC30V |
||
Communication mode |
485 communication (MODBUS protocol) is standard, and CAN, fiber, and Profibus-DP are optional |
||
other |
keyboard |
LCD display |
|
Operating ambient temperature |
-10°C~+40°C, and above 40°C need to be downgraded |
||
relative humidity |
5%~95% |
||
Storage temperature |
-40℃~+70℃ |
||
altitude |
Below 1000 meters, more than 1000 meters will be degraded by 1% for every 100 meters |
||
Protection level |
IP00 |
||
disposition |
The whole series is equipped with input reactors as standard, and optional input filters, output reactors, and output filters |
||
-
Ensuring Reliability: A Deep Dive into Transformer MaintenanceIntroductionElectric transformers are the backbone of modern power distribution systems, silently enabling the reliable delivery of electricity to homes, businesses, and industries. As these critical assets age and the demand for uninterrupted power grows, the importance of diligent transformer maintenance has never been greater. This essay explores the essential role of transformer maintenance, highlighting the value of proactive care, the impact of advanced diagnostic technologies, and the traVziman09/03/2025 -
How does a transformer work?Transformer Operation PrincipleA transformer is an electrical device that operates on the principle of electromagnetic induction to transfer electrical energy from one circuit to another. It enables the adjustment of voltage levels within an alternating current (AC) system, either stepping up (increasing) or stepping down (decreasing) voltage while maintaining the same frequency.Working Principle:Basic ComponentsA transformer consists of two coils, known as windings—the "primary winding" connectRockwell09/03/2025 -
Constant testing of high-voltage cable lines1. Definition of High-Voltage Cable Line Constant TestingHigh-voltage cable line constant testing refers to the systematic measurement, using specialized instruments, of electrical parameters such as resistance, inductance, capacitance, and conductance before a cable line is commissioned or after major maintenance. The aim is to obtain fundamental data characterizing the electromagnetic properties of the cable, serving as a critical testing phase that provides accurate parameter support for poweOliver Watts09/03/2025 -
Technical Analysis of 220 kV High-Voltage Cable Construction in Winter1.Work Environment Requirements and Safeguard MeasuresBased on technical requirements for cable equipment storage, laying, transportation, laying, transposition, testing, and cable terminations, the project owner and construction units have conducted extensive trials and implemented protective measures regarding ambient temperature, humidity, bending radius, traction control, and route optimization. These measures ensure high-voltage cable quality and on-site safety under harsh winter conditionsJames09/03/2025 -
Withstand voltage test of high-voltage cablesWithstand voltage test is an insulation test, but it is a destructive test that can reveal insulation defects difficult to detect in non-destructive testing.The test cycle for high-voltage cables is three years, and it must be conducted after non-destructive tests. In other words, the withstand voltage test is performed only after all non-destructive tests have been passed.Most high-voltage cables used today are cross-linked polyethylene (XLPE) cables, which can have large cross-sections and covOliver Watts09/03/2025 -
Analysis of Abnormal Causes of High-Voltage Cable Grounding Circulation and Typical CasesI. Introduction to Cable Grounding Loop CurrentCables rated 110 kV and above use a single-core structure. The alternating magnetic field generated by the operating current induces a voltage on the metallic sheath. If the sheath forms a closed circuit through the earth, a grounding loop current will flow on the metallic sheath. Excessive grounding loop current (loop current exceeding 50 A, more than 20% of the load current, or a ratio of maximum-to-minimum phase current greater than 3) not only aFelix Spark09/03/2025
-
Distribution automation systems solutionsWhat are the difficulties in overhead line operation and maintenance?Difficulty one:Overhead lines of distribution network have wide coverage,complicatedterrain,many radiation branches and distributed power supply,resultingin "many line faults and difficulty in fault troubleshooting".Difficulty Two:Manual troubleshooting is time-consuming and laborious.Meanwhile,therunning current,voltage and switching state of the line cannot be graspedin real time,because of the lack of intelligent technical mRW Energy04/22/2025 -
Interference Generated by Frequency Converters and SolutionsA frequency converter is a device used to adjust the speed and voltage of an electric motor by changing the motor's supply frequency to achieve speed control. However, during operation, frequency converters generate some interference that can negatively impact other electronic equipment and the power grid. Therefore, it's necessary to adopt solutions to mitigate this interference.Electromagnetic Interference (EMI): When adjusting the motor's supply frequency, frequency converters generate higRW Energy08/21/2025
