Neweras Develop Limited

Contact: Mr. Jack Chen MP: 86 15002143331 Skype: chysir

Email: Web: ww.newerasdevelop.com Address: Room 808, No.45, East Yanan Road, Shanghai, China

LCU Panels

Characteristics of LCU panel
LCU panels have functions of control, regulation, protection and communication. It is divided into auto control LCU panel, public system LCU panel, switch yard LCU panel and gate auto control LCU panel.
Product features of LCU panel
* LCU panels adopt PLC of international famous brands (Schneider, Omron, GE, Siemens) plus colorful touch screen.
* Unit control adopts PID regulation with fast regulation. It can finish the overshoot within 3 swings.
* Adopt 100Mbps high speed Ethernet communication.
* Adopt GGD big glass structure. The glass gate is made from aluminium profile with protection class of IP42.
* Outline dimensions: 2260x800x600 (HxWxD). The external surface is painted, and the internal part is equipped with earthing copper bar. The front and rear door are grounding by copper braided wire with base plate sealing to prevent snakes and rats coming in.
* Adopt auto control technology of PLC plus touch screen.
* Adopt PLC of international famous brand with double CPU, double Ethernet, and double power if high level LCU panel is required.
* It can form the star type Ethernet or ring form Ethernet with upper computer and other equipments of the project.
* It can form double star-shaped type Ethernet or double ring type Ethernet with upper computer and other equipments of the project, if standard is high level.
Main functions of LCU panel

Unit auto control LCU panel:
It is used for turbine and generator units of any capacity and type.
1. Finish unit auto start up, synchronization, shutdown, generator active power regulation, reactive power regulation and generator working condition switch.
2. The measurement of any electric quantity and non electric quantity parameter.
3. Turbine protection (bearing temperature, guide vane, load rejection).
4. Inlet valve control, including butterfly valve, gate valve and spherical valve.
5. Connect to upper computer Ethernet.
Public LCU panel:
It is used for oil ,gas and water system.
1. Finish the control, regulation, protection and communication of oil, gas and water system.
2. Measurement of the pressure parameter for oil, gas and water.
3. Measurement of reservoir water level, forebay level and tail water level.
4. Control and communication of DC power.
5. Communication of electricity metering.
6. Connect to upper computer Ethernet.
Switchyard LCU panel:
It is used for switch yard.
Control for each circuit breakers of the switch yard.
Gate auto control LCU panel:
It is used for any kind of gate.
1. The auto control, regulation, protection and communication for each gate (bulkhead gate, radial gate, single hanging and double hanging).
2. Equipped with opening degree sensor, load sensor to measure gate opening degree and load.
Technical parameters:
* Adopts PLC of international famous brands (Schneider, Omron, GE, Siemens) plus colorful touch screen.
* Unit control adopts PID regulation with fast regulation. It can finish the overshoot within 3 swings.
* Adopt 100Mbps high speed Ethernet communication.

Synchronous Panels


Characteristics of synchronous panel
* Guarantee to grasp the first synchronization chance to realize the synchronization accurately, quickly and reliably.
* Auto change parameters to adjust the frequency, pressure and predict the switching on phase angle.
* It has multi adjustment methods to adapt to different working objects.
* It has multi trouble inspection functions with reliable and easy use.
* It is suitable for one set of generating unit or single line switching on synchronization.
* It can set up 8 parallel points with synchronization features of 8 free definitions.
* It has net working and upper computer communication function.
Technical parameters of synchronous panel
* Power: AC85V~250V DC100V~250V
* Input PT signal:
Generator (parallel side) standard voltage: 0V~100V+30V
Net (system side) standard voltage: 0V~100V+30V
* Input synchronous feedback signal: Including auxiliary permanent open contact point signal
* Output signal: Six contact points signal of speed increase, speed decrease, pressure increase, pressure decrease, synchronous switching on and trouble. They are output through relay method. The contact capacity is AC resistance 220V/5A; AC resistance 380V/2A; DC 110V/0.8A, DC 220V/0.2A.

DC Power Systems

Characteristics of DC power system

DC systems are widely used for hydropower stations, thermal power plants, all kinds of transformer stations and other DC equipment users. It provides DC power for signal equipment, protection, automation devices, accident lighting, emergency power and circuit breakers as well as switching-on operation. DC power system is an independent power, it will not be influenced by generator, station power and system operation method. It can guarantee that the standby power-storage battery will provide DC power under the situation of external current interruption. The reliability and safety of the DC panel will affect the reliability and safety of the power supply of the power system. The nominal unit for DC system is the battery capacity, such as 65AH,100AH, the common name is GZDW-65AH,GZDW-100AH.
The DC system consists of two parts. The first part is battery panel and the other part is DC charging panel (DC panel). The battery panel is a cabinet which can hold many batteries. DC distribution voltage and battery number: 9 pieces of 12V batteries for 110V DC system, 18 pieces of 12V batteries for 220V DC system.
DC panel is the abbreviation of DC power operation system. The common name is intelligent maintenance free DC power panel, short for DC panel. The common type is GZDW. DC panel input is AC, output is DC. When AC power is cut off, there will be no output for AC panel, but DC panel can still output DC power. DC panel is a new-type DC system with digital control, protection, management and measurement.
DC panel consists of cabinet, rectifier module system, monitoring system, insulation monitoring unit, battery inspection unit, open and close degree inspection unit, pressure decrease unit and a series of distribution units, such as AC input, DC output, voltage display and current display.
DC panel is divided into distributed DC panel and wall mounted DC panel, it has DC charging panel and DC feeder panel. Charging panel usually provides DC power to DC load as well as charging for the storage batteries. DC feeder panel distributes the DC from the charging panel to each DC load.

Thermometry Braking Cabinets

Characteristics of Thermometry Cabinets

Thermometry braking cabinets uses a new type of temperature control instrumentation, temperature instrumentation as main control unit, realize to the thrust bearing, water guide bearing temperature, the stator coil, a stator core, oil cooler oil tank, inlet and outlet temperature of sentinel / patrol monitoring measurement. At the same time the allocation of the electromagnetic air valve and manual valve, complete sets of automatic and manual brake operation.
Temperature and velocimetry braking panels
General description:
Temperature and velocimetry braking panels are applied for upper, lower guide bearing, and thrust bearing. It can monitor and measure the pad temperature of turbine guide bearing and oil temperature inside the oil groove, generator coil and iron core, inlet and outlet air temperature of the air cooler. When unit speed decreases to 30% to 35% of the rated speed, the electric signal of the speed signal measurement and control device will change the air flow direction inside the brake pipe to realize the unit shutdown.
Features:
This cabinet consists of cabinet body, temperature and speed measurement system, braking sealing system and pressure control and display system. It has advantages of high accuracy, easy operation, reliable action performance, high level of automation, long working life, high performance and competitive price. It is the leader among similar type of products.
Main technical data:
1. Meter input power: AC 220V±15%; DC100~ 250V.
2. Air valve operation power: DC 220V, 110V or AC 220V.
3. Braking system operation air pressure: 0.1~1MPa.
4. Brake control method: Single way and double way.
5. Diameter of air inlet and outlet pipes: f8, f10, f12, f15.
6. Air braking valve: MFH-5 integrated valve.
7. Oil braking valve: DPW electro magnetic distribution valve.
8. Oil brake operation pressure: 2.5-6.3MPa.
9. Cabinet outline size: 800mmx600mmx2260mm.
10. Pipe fittings inside the cabinet: Purple copper pipe.
11. Meter configuration inside the cabinet: (Digital meters are manufactured by our company).
1) Intelligent digital temperature meter, usually it adopts outline size of 160*80, or 96*96, 96*48, 72*72.
2) The outline size of speed signal measurement and control device, temperature inspecting instrument and shear pin signal device is 160*80 mm.
3) The outline size of electric contact pressure gauge and pressure gauge usually adopts DN100mm, or DN 150mm. It can also adopt higher configuration of digital meters.
Thermometry braking cabinets
General description
Thermometry braking panels adopts the new type temperature control instrument and temperature inspection instrument as the main control units to realize the temperature monitor and measurement for thrust bearing, water guide bearing, stator coil and iron core, oil tank, inlet and outlet air temperature of the air cooler. It is equipped with electro magnetic air valve and manual spherical valve to realize unit auto and manual braking operation. This cabinet can monitor the braking air source pressure and braking valve status according to different selections and configurations made by customers.

Features
* No interference between manual and auto operation circuit. All components of this device adopts stainless steel to adapt to moisture working condition.
* Advanced technical performance and high reliability.
* Perfect function setup and easy installation and maintenance.
* Optimized system configuration and reasonable cost.
Main technical data
* Working circuits: 64, selective.
* Working power: 220VAC, 220VDC, 110VAC, 24VDC.
* Measuring signal type: Thermal resistance, thermoelectric couple, current, voltage, speed signal. Selective.
* Resolution: 1, 0.1, 0.01 or 0.001 byte.
* Relay output: DPDT/type, 3A/AC220V 6A/DC24V.
* Analog output: Current 4-20mA.
* Brake pressure: 1.0Mpa.
* Air source requirement: contamination particles = 4 0 µ m.
* Brake circuit type: Single electric control forced return; Double electric control, spring return.
System composition
This device consists of intelligent temperature display control apparatus, temperature inspection instrument, speed signal device, electro magnetic air valve and other non electric monitoring and measurement meters which can be configured easily and braking circuit elements.
The braking circuit can be equipped with two position three way single electric control electro magnetic valve, two position three way double electric control electro magnetic valve, integrated braking valve fittings according to the different type of unit air brake. It can be equipped with double braking circuit system during special application occasion. Besides the above core elements, the braking circuit is equipped with pressure switch, pressure gauge, gas water separation filter and manual operation spherical valve. To guarantee the braking air system clean, each element is connected by stainless pipes.
Main functions:
Monitoring and measurement function
This device can do multi circuits temperature monitoring and measurement, including some circuits fixed-point monitoring. Each circuit of the fixed-point monitoring has a II class independent alarm output contact. A set of disconnection signal will be output when temperature sensor is disconnected. II class alarm temperature value can be set at other monitoring points. It can send out the relevant class alarm signal when the temperature exceeds the alarm setting value. This device can also be equipped on the speed meter to set up the alarm value for 8 circuits speed monitoring signal.
Communication function
To meet monitoring and control communication requirements, it can be equipped with communication function. It adopts RS485 port and MODBUS-RTU agreement.
Braking function
This device is equipped with high performance electro magnetic air valve. It only needs to connect the ports of the air system according to stipulations to realize the unit brake. The brake method includes: electric auto /manual air brake, fall air brake, local manual air brake and fall air brake.

AC Panels

Characteristics of AC panel

AC panels or systems are used to display the working conditions of each high and low voltage distribution cabinets. Usually they can display current, voltage and circuit breaker closing instructions. The nature of AC panel is low voltage distribution cabinet, matching DC panels and provides power distribution for DC panels and distribution room. AC panel distributes the AC power to each load feeder in the transformer station.
They are applicable to 35KV and the transformer stations below 35KV, which need two sets of AC power for mutual switch. AC panels provides power for DC panel, distribution for transformer station lighting, transformer station air conditioner (draught fan), storage power for switch yard, power for switch yard heater and switch yard interlock power.
The input and output of AC panel is AC power. When AC power is cut off, there will be no output for AC panel. AC panel is used for large and medium sized generating power station and transformer station.

The types of AC panel

Standard AC Panel / Intelligent AC Panel

Metering Panels

Characteristics of metering panel

Metering panels are the abbreviation of electric energy measuring cabinets, which are electric energymeasuring devices.
All energy meters of the project adopt digital type with metering chip, microprocessor, warming real time clock, data port and human-computer port. The metering chip will separate the voltage and transform the analog signal of the CT to digital signal, and it will conduct digital integration calculation to acquire the active energy and reactive energy accurately. Microprocessor will process the data according to relevant fee rate and demand. The results will be stored in the data memory and it can provide information and conduct data exchange with the monitoring and control system through the communication ports in real time.
Electric energy metering panels are divided into integral type and split type. Integral type is divided into the fixed type and the movable type.

Working conditions of metering panel

* Altitude: 6-35 KV integral type <1000m, 0.38KV integral type <2000m;
* Environment temperature: +45℃~-5℃, average temperature within 24 hours should not be more than 35℃.
* Relative humidity: less than 90% under temperature of 20℃; less than 50% under temperature of 40℃.
* Seismic intensity: 8 degrees
* Inclination: Inclination of cabinet house <3°; Energy meter inclination <1°.

Main technical parameters of metering panel

* Cabinet size: 2260x800x600mm
* Protection class: IP20
* The external house is metal material with enclosed structure.

Distribution Cabinets

Characteristics:
AC low voltage distribution cabinets are used for generating stations, transformer stations, industrial and mining enterprises as the power for AC 50Hz, rated voltage 380V and rated current 2500A distribution power systems as well as lighting and energy conversion, distribution and control for distribution equipment.
Applicable scope:
Installation place: Outdoor in the place with good ventilation.
Environment temperature: -10℃~+45℃.
Storage temperature: -25℃~+75℃.
Relative humidity: =90% without condensation.
Altitude: =3000m (instruct the actual height if it is above 2500m).
Installation inclination: =10 degree
High voltage distribution cabinet also means the electrical products with voltage class 3.6KV-550KV for connection, disconnection, control and protection of power system generation, transmission, distribution, energy conversion and consumption.
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high voltage distribution cabinet / Low voltage distribution cabinet

Protection and Control Panels

Characteristics:
Every project has to be installed with the micro computer protection and control systems according to the unit and transformer capacity. The protection devices should meet the requirement of reliability, choice, fast action and sensitivity. It can send out signal or switch off automatically and quickly. They have functions of switching off, accurate alarm, trouble record, sequential record, trouble report, auto in section, set up and modification of the setting data. Microcomputer protection module has the function port to monitoring and control system. The main computer can do the overall management to protect and control the equipment and power systems.
Generator protection
enerator protection
1) Pilot protection.
2) Rotor over current, over load and earthing protection.
3) Over excitation voltage and low excitation voltage protection.
4) Non-electric quantity protection.
5) Compound voltage inter lock direction over current protection (memory).
6) Stator over current, over load and winding single way earthing protection.
7) negative sequence over current and over load protection. (rotor external surface negative sequence over load protection)
8) Low and over voltage protection.
9) Low and high frequency protection.
10) Loss of excitation protection.
11) Reverse power protection.
12) Measurement function.
Motor protection
Motor protection
1) Current fast break protection.
2) Inverse time current limit protection.
3) Low voltage protection.
4) Long time for start up and motor shaft lock protection.
5) Over load protection.
6) Over heat protection.
7) Longitudinal differential protection.
8) Zero sequence over current protection.
9) Measurement function.
T
Transformer protection
ansformer protection
1) Differential protection.
2) Three stops compound voltage inter lock direction over current protection.
3) Over load protection.
4) Zero sequence current protection.
5) Zero sequence voltage protection.
6) Gap zero sequence current and voltage protection.
7) PT disconnection alarm.
8) Measurement function.
Line protection
ne protection
1) Current and voltage chain protection.
2) Three stops low voltage inter lock direction over current protection.
3) Over load protection.
4) Bus couple charging protection.
5) Synchronization inspection, no voltage inspection, reclose of three phases at one time.
6) Three stops zero direction current protection.
7) PT disconnection alarm.
8) Measurement function.
Station transformer protection
ation transformer protection
1) Two stops timing compound limit voltage interlock over current protection.
2) High voltage side zero sequence timing over current limit protection.
3) Over load protection.
4) Low voltage side zero sequence timing over current limit protection.
5) Low voltage side zero sequence inverse time over current limit protection.
6) Zero sequence over voltage protection.
7) Low voltage protection.
8) Non electrical quantity protection.
9) Measurement function.
Capacitor protection
Capacitor protection
1) Three stops over current protection.
2) Three stops zero sequence over current protection.
3) Over voltage protection.
4) Under voltage protection.
5) Three phases unbalanced current protection.
6) Three phases unbalanced voltage protection.
7) Capacitor auto input and cut off.
8) PT disconnection alarm.
9) Measurement function.

Neweras Develop Limited