In most large electrical systems, generators and power transformers are the two most expensive pieces of equipment. In addition to the capital cost of purchase, the continuity and reliable operation of these two key equipment systems are also the most critical.
For example, consider the main power transformer for a large plant. The failure of this transformer could result in millions of dollars in lost production. If there is a need to repair or replace a transformer, the cost may increase due to the cost of the temporary supply system, the purchase price of the new transformer, and the labor cost.
In addition to the costs associated with equipment failures, it is also necessary to consider safety factors. For example, the speed at which the maintenance system operates helps to determine the level of incident arc energy that will be generated. In other words, a rapid maintenance system will release less incident energy than a slow maintenance system. This greatly improves the safety of workers and equipment.
Delixi electric maintenance system is planned or calibrated according to the following four overall parameters:
1. It is necessary for electrical maintenance to allow normal or full load current to flow through. This includes both the operating current and the starting current.
2. When a short circuit occurs, it is necessary for electrical maintenance to selectively trip (disconnect) before thermal or mechanical damage is applied to any equipment being maintained.
3. If the first upstream equipment fails, it is necessary for the next upstream equipment to run to clear the short circuit.
4. It is necessary to operate at a certain speed to keep the incident arc energy at a minimum.
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Delixi quasi-sine wave voltage regulator application
There are also several types of quasi-sine waves, ranging from square waves, which are almost indistinguishable from square waves, to rounded trapezoidal waves, which are relatively close to sine waves. We're only going to talk about square waves, which are the waveforms that most commercially available high-frequency regulators can supply today.
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Delixi product parameter unit VF and V difference
Voltage vf and v difference: The two have different meanings, vf on the battery indicates the feedback voltage, while v represents the capacity of the battery and is a unit of measurement of voltage. Lithium battery is a type of battery that uses lithium metal or lithium alloy as the positive/negative electrode material and uses a non-aqueous electrolyte solution.
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Parameters of Delixi inverter speed controller
(1) Gain Parameter: The share gain of the speed manipulator. If the gain is too large, it may cause the speed to fluctuate.
(2) Integration time parameter: the integration time of the velocity manipulator, that is, the deviation step signal ...
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Delixi spare parts replacement cycle description
1. Cooling fan (2-3 years)
As long as the inverter is in use, the cooling fan has always been running, so the cooling fan is generally the shortest service life of the accessories, generally after the use of the cooling fan for 2-3 years, the bearings, balls, motors, etc. of the fan are seriously worn, and they need to be replaced.
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Thermal calculation of Delixi linear regulator
Thermal accounting requires information such as power loss, thermal resistance of the package, and ambient temperature. The power loss is calculated in the same way as the efficiency accounting, which is simply the value of the difference between the output input voltage and the input current. Thermal resistance should have a technical standard documented, and if it is not available, it is necessary to consult the manufacturer. Basically...
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Reducer troubleshooting method - Delixi
01 "O" ring spell
In addition to the oil seal problem of the reducer itself, the robot manufacturer will also have an impact on the planning and installation of the reducer components, due to the sealing of the reducer, in addition to the oil seal, there are also O-rings.
O-rings are a very common type of product sealing planning.
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Delixi inverter E102 series model
The S2 (single-phase 220V, 50/60HZ) comes standard with a built-in braking unit
CDI-E102G0R4S2B 0.4KW
CDI-E102G0R75S2B 0.75KW
CDI-E102G1R5S2B 1.5KW
CDI-E102G2R2S2B 2.2KW
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Delixi inverter built-in bypass soft starter CDRA-K3
Delixi built-in bypass soft starter CDRA-K3 series is a set of soft start, soft parking and multi-functional protection in one of the motor control equipment. Realize a smooth starter motor without impact during the entire starting process. CDRA-K3 series has built-in bypass contactor and control power supply.
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General parameter setting skills of inverter - Delixi
The setting menu of the inverter is divided into a first-level menu, a second-level menu, etc., and the menu is followed by parameters.
If the inverter starts in standby (ready to run) condition, set the FUn-PSS-SP2 parameter to 15Hz, and then return to the standby state operation.
In the practice setting ...
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Delixi low-voltage AC contactor can not be suction reason
AC contactor can sometimes be used for a long time can not be suction situation, although this is not a common problem of AC contactor, but AC contactor can not be suction will affect the efficiency of the operation and even damage the production equipment, with the equipment for too long, together without outstanding maintenance, are ...
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Voltage regulator failure and solution - Delixi
1. There is no output, no voltage indication or no start when the machine is turned on. Overvoltage or undervoltage maintenance
1. Adjust the internal output voltage adjustable potentiometer
2. The wrong phase and the lack of phase are maintained, and the two phases are arbitrarily replaced by three phases
3. The main control circuit board is broken 3. Replace
4. The output AC has been ...
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Delixi intelligent switch and its advantages introduction
Delixi is one of the world's top 500 enterprises, the quality of its switches is excellent, the layout is reasonable, and is deeply liked by the majority of customers. Founded in 1984, China Delixi Holding Group Co., Ltd. is a large-scale group integrating capital operation, brand operation and industrial operation, with a registered capital of 15 ...
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Thermal calculation of linear regulator - Delixi
Thermal accounting requires information such as power loss, thermal resistance of the package, and ambient temperature. The power loss is the same as the power accounting, which is purely the value of the output input voltage difference multiplied by the input current. The thermal resistance should have a technical standard documented, and if it is not, it is necessary to ask the manufacturer. Basically...
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Delixi contactor and fuse function
Delixi circuit breakers and contactors are used to make and break circuits. The rated current of the circuit breaker is generally greater than that of the contactor (the maximum current medium voltage contactor is 630 A); The circuit breaker has excellent short-circuit current breaking capability (now the maximum capacity of the medium voltage system is 80KA), and the contactor needs to cooperate with the fuse...
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Delixi inverter selection
1. According to the load type, confirm the type of inverter: different load types, speed requirements and power size, and the need to choose different types of Delixi inverters. Therefore, it is necessary to understand in detail the type of motor load to be controlled to find the most suitable type.
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Delixi fan and pump load frequency conversion selection
Delixi general fan, pump, the requirements for the inverter are simple, only the inverter capacity is equal to the motor capacity. Roots blowers, deep-water pumps, sediment pumps, and fast-changing musical fountains are available in a larger capacity.
Lifting...
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Delixi low-voltage inverter selection method
The selection of inverter is indeed very important, because if the selection is not suitable, it will cause a waste of time and money, and at worst it will cause production incidents and personnel damage.
First of all, according to the classification and selection of the inverter
1. Inverters can be divided into general-purpose inverters and special inverters.
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Delixi circuit breaker tripper selection and tuning analysis
Among the objects of circuit breaker maintenance, there are some electrical equipment that generate several times its rated current in a short period of time during the start-up process
(1) The setting of the operating current of the instantaneous overcurrent tripper
In the circuit breaker maintenance of ...
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Analysis of common problems of inverter - Delixi
1. Why does the maintenance function of the inverter operate when the clutch is connected to the load?
When the load is connected with a clutch, at the moment of connection, the motor changes sharply from the no-load condition to the area with a large slip rate, and the large current flowing through causes the inverter to trip over the current and cannot work.
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Delixi voltage regulator capacity and size calculation method
1. Single-phase circuit single-phase power supply - power supply with a single AC electromotive force. The fundamental power supply method for civil electricity. Single-phase load – A load that is powered by a single-phase power supply. Household appliances such as lights, televisions, and electric fans are generally single-phase loads. The accounting method is as follows:
a. When negative ...
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