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YC300 series programmable microcomputer relay protection device
The YC300 series programmable microcomputer relay protection measurement and control device is a set A new generation of substation automation product
Product details
The YC300 series programmable microcomputer relay protection measurement and control device is a set The new generation of substation automation products that integrate electronic technology, computer technology, power automation technology, and communication technology adopts a systematic approach The new logic programmable design has functions such as protection, measurement, control, alarm, communication, display, and waveform recording, and is the core protection and monitoring component of the intelligent switchgear. It not only has powerful functions, flexible configuration, user-friendly interface, and easy maintenance, but also has extremely strong anti-interference ability and stable and reliable performance. It can be widely used in substation automation with voltage levels of 110Kv and below. This series of devices has the following characteristics:
·Has high reliability. The components are made of industrial grade CMOS chips, and overall consideration is given to electromagnetic compatibility in chassis design, power supply design, and circuit design, with extremely strong anti-interference ability.
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Friendly human-machine interface. Adopting a large screen graphic LCD display, the full Chinese menu can display the primary system wiring diagram, switch status, various electrical parameters, protection information, and timely and fault waveform diagrams of the protection and measurement objects on the same screen.
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Online programming function. The PLC logic programmable function supports IE-61131-3 graphic programmable standard, and different protection control logics can be freely downloaded online to be set as comprehensive protection devices for different purposes.
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Real time waveform display and fault recording function. It can display real-time waveforms of various phase voltages, line voltages, phase currents, and protection currents, and has the function of fault recording. It can continuously record 108 waveforms of current and voltage during faults, providing detailed data for analyzing accident causes.
·Sequential event recording function. It has 200 event recall functions, which can automatically record the occurrence time, type, and action value of events. The resolution of its time recording is less than 1ms and it has the function of not losing during power failure.
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Multi channel status monitoring function. There are up to 16 switch input terminals, and the switch values can be freely defined. Active/passive contacts can be directly connected. 10 switch outputs, 3 optional 4-20mA analog inputs, and 1 optional 4-20mA analog output effectively solve the problem of users needing to monitor multiple battery levels and statuses without the need for additional devices. |
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Powerful communication capabilities. The front panel is equipped with one communication port (for debugging and setting), and there is one RS485 communication interface, one optional fiber optic interface, and two Ethernet interfaces at the back, which can operate simultaneously. It is suitable for various occasions to achieve remote control, remote signaling, telemetry, remote value change, remote protection for switching on and off, remote call for real-time waveform, fault recording and uploading, and other transmission functions. |
·Protection setting optional function. At the factory, 8 sets of protection settings have been stored, which can be switched and selected through the panel and communication methods, quickly and conveniently adapting to various on-site operating modes. |
·A comprehensive self inspection system. It has software and hardware automatic detection and alarm functions for the normal values of temperature and measurement channel coefficients of RAM, ROM, fixed values, relays, AD channels, and unit motherboards. |
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serial number |
Series Name |
Device model |
device name |
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Application scenarios |
line protection |
YCL-311 |
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4 |
Outgoing protection and measurement device |
Protection and measurement of feeders in power systems with voltage levels of 35KV and below, as well as voltage and current protection and measurement units in 66KV and 110KV systems. |
YCL-312 |
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5 |
Incoming line protection measurement and control device |
Protection and measurement of main power supply incoming lines in power systems with voltage levels of 110KV and below in various operating modes. |
YCL-314 |
Mother protection measurement and control device |
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7 |
Protection and measurement of main power supply incoming lines in power systems with voltage levels of 110KV and below in various operating modes. |
transformer protection |
YCT-321 |
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8 |
Factory transformer protection and measurement device |
Protection and measurement of transformer feeders in power systems with various operating modes at voltage levels of 35KV and below. |
YCT-322 |
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9 |
Transformer differential protection measurement and control device |
Differential protection for double coil and three coil power transformers in various operating modes of power systems with voltage levels of 110KV and below. |
YCT-323 |
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10 |
Transformer backup protection measurement and control device |
Backup protection for power transformers in various operating modes of power systems with voltage levels of 110KV and below. |
YCT-324 |
Transformer non electric quantity protection measurement and control device |
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11 |
Non electric quantity protection and measurement and control of power transformers in various operating modes of power systems with voltage levels of 35KV and below. |
Capacitor protection |
YCC-331 |
Capacitor protection and measurement device |
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12 |
Protection and measurement of power capacitors in various operating modes of power systems with voltage levels of 110KV and below. |
automatic bus transfer
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YCB-341 |
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13 |
Incoming line backup automatic switching measurement and control device |
Protection and measurement of backup incoming lines with automatic switching function in power systems with single busbar dual power supply and one main and one backup operation mode for voltage levels of 110KV and below. |
YCB-342 |
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14 |
Incoming self resetting device |
Protection and measurement of backup incoming lines with automatic switching function in power systems with single busbar dual power supply and one main and one backup operation mode for voltage levels of 110KV and below. |
YCB-343 |
Mother backup automatic measurement and control device |
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15 |
Protection and measurement of backup incoming lines with automatic switching function in power systems with single busbar dual power supply and one main and one backup operation mode for voltage levels of 110KV and below. |
Motor protection |
YCD-351 |
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16 |
Motor protection measurement and control device |
Protection and measurement and control of high-voltage asynchronous motors with voltage levels of 3-10KV. |
YCD-352 |
Electric motor differential protection measurement and control device |
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18 |
Differential protection for large high-voltage asynchronous motors above 2000KW. |
PT measurement and control |
YCPT-361 |
PT measurement and control device |
Monitoring of PT parallel/switching operation status in various operating modes of power systems with voltage levels of 110KV and below.
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General measurement and control |
YCM-371 |
Universal measurement and control device |
Used for distribution cabinets that do not require protection functions and only need to measure and control the opening and closing of switches. |
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Basic functional configuration of YC300 series devices Specification Model |
protection function Measurement and Control Function communication interface YCL-311 Outgoing protection and measurement device Current quick break protection Time limited current quick break protection Timed current limiting protection Inverse time overcurrent protection Zero sequence overcurrent protection Three phase primary reclosing Post acceleration protection |
Underfrequency load shedding
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PT disconnection alarm Device malfunction alarm Control circuit disconnection alarm |
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Small current grounding line selection The opening and closing of local or remote circuit breakers; 16 channel switch signal acquisition, 10 channel switch signal output; Measure and display analog quantities such as Ua, Ub, Uc, Uab, Ubc, Uca, Ia, Ib, Ic, I0, Cos Φ, f, P, Q, Pwh, Qvh, as well as telemetry functions; 2-channel pulse output, 3-channel 4-20mA analog input, 1-channel 4-20mA analog output; Accident and protection event recording function; Real time waveform display and fault recording function. |
Standard configuration: 2 RS485 communication interfaces Optional: 1 fiber optic interface 2 Ethernet interfaces YCL-312 Incoming line protection measurement and control device Current quick break protection Time limited current quick break protection |
Fixed time overcurrent protection |
Zero sequence overcurrent protection low voltage protection Control circuit disconnection alarm |
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Device malfunction alarm The opening and closing of local or remote circuit breakers; 16 channel switch signal acquisition, 10 channel switch signal output; Measure and display analog quantities such as Ua, Ub, Uc, Uab, Ubc, Uca, Ia, Ib, Ic, I0, Cos Φ, f, P, Q, Pwh, Qvh, as well as telemetry functions; 2-channel pulse output, 3-channel 4-20mA analog input, 1-channel 4-20mA analog output; Accident and protection event recording function; Real time waveform display and fault recording function. |
Standard configuration: 2 RS485 communication interfaces Optional: 1 fiber optic interface 2 Ethernet interfaces YCL-313 Mother protection measurement and control device |
Current quick break protection (can be set as closing quick break, low voltage lockout quick break) |
Time limited current quick break protection Fixed time overcurrent protection Control circuit disconnection alarm |
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Device malfunction alarm The opening and closing of local or remote circuit breakers; 16 channel switch signal acquisition, 10 channel switch signal output; Measure and display analog quantities such as Ua, Ub, Uc, Uab, Ubc, Uca, Ia, Ib, Ic, I0, Cos Φ, f, P, Q, Pwh, Qvh, as well as telemetry functions; 2-channel pulse output, 3-channel 4-20mA analog input, 1-channel 4-20mA analog output; Accident and protection event recording function; Real time waveform display and fault recording function. |
Standard configuration: 2 RS485 communication interfaces Optional: 1 fiber optic interface 2 Ethernet interfaces YCT-321 Factory transformer protection and measurement device Current quick break protection Time limited current quick break protection Fixed time overcurrent protection Inverse time overcurrent protection Zero sequence overcurrent protection Temperature protection; |
Gas protection
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PT disconnection alarm Control circuit disconnection alarm Device malfunction alarm |
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Small current grounding line selection The opening and closing of local or remote circuit breakers; 16 channel switch signal acquisition, 10 channel switch signal output; Measure and display analog quantities such as Ua, Ub, Uc, Uab, Ubc, Uca, Ia, Ib, Ic, I0, Cos Φ, f, P, Q, Pwh, Qvh, as well as telemetry functions; 2-channel pulse output, 3-channel 4-20mA analog input, 1-channel 4-20mA analog output; Accident and protection event recording function; Real time waveform display and fault recording function. |
Standard configuration: 2 RS485 communication interfaces Optional: 1 fiber optic interface 2 Ethernet interfaces YCT-322 Transformer differential protection measurement and control device Differential quick break protection Ratio differential protection (second harmonic braking differential protection) |
CT disconnection alarm and locking differential protection |
Gas protection (body gas, loaded gas) Main transformer oil level and temperature alarm Device malfunction alarm |
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Trip circuit disconnection alarm 16 channel switch signal acquisition; 10 switch signal outputs; Measure and display analog quantities such as primary current (IA, IB, Ic), primary zero sequence current (I0h), secondary current (Ia, Ib, Ic), secondary zero sequence current (I0I), differential current (Icd1, Icd2, Icd3), braking current (Izd1, Izd2, Izd3), harmonic current (Ixb1, Ixb2, Ixb3), etc; 2-channel pulse output, 3-channel 4-20mA analog input, 1-channel 4-20mA analog output; Accident and protection event recording function; Real time waveform display and fault recording function. |
Standard configuration: 2 RS485 communication interfaces Optional: 1 fiber optic interface 2 Ethernet interfaces YCT-323 Transformer backup protection measurement and control device Three stage protection for blocking direction current of compound voltage (limited time quick break, overcurrent) Zero sequence overcurrent and overvoltage protection Gap overcurrent and overvoltage protection |
overload protection |
Overload lockout with on load voltage regulation PT and CT disconnection alarm Bus grounding alarm |
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Control circuit disconnection alarm The opening and closing of local or remote circuit breakers; 16 channel switch signal acquisition, 10 channel switch signal output; Measure and display analog quantities such as Ua, Ub, Uc, Uab, Ubc, Uca, Ia, Ib, Ic, I0, Cos Φ, f, P, Q, Pwh, Qvh, as well as telemetry functions; 2-channel pulse output, 3-channel 4-20mA analog input, 1-channel 4-20mA analog output; Accident and protection event recording function; Real time waveform display and fault recording function. |
Standard configuration: 2 RS485 communication interfaces Optional: 1 fiber optic interface 2 Ethernet interfaces YCT-324 Transformer non electric quantity protection measurement and control device Main body heavy gas protection Main body light gas alarm Heavy duty gas protection |
Load light gas alarm
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Cooling disappearance protection Pressure release protection Main transformer oil level low protection |
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Main transformer oil temperature high alarm 16 channel switch signal acquisition, 10 channel switch signal output; 3 channels of 4-20mA analog input, 1 channel of 4-20mA analog output; Accident and protection event recording function. |
Standard configuration: 2 RS485 communication interfaces Optional: 1 fiber optic interface 2 Ethernet interfaces YCC-331 Capacitor protection and measurement device Current quick break protection Timed overcurrent Reverse timed overcurrent low voltage protection overvoltage protection Zero sequence current protection |
Zero sequence voltage protection
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Temperature protection PT disconnection alarm Control circuit disconnection alarm |
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Device malfunction alarm The opening and closing of local or remote circuit breakers; 16 channel switch signal acquisition, 10 channel switch signal output; Measure and display analog quantities such as Ua, Ub, Uc, Uab, Ubc, Uca, Ia, Ib, Ic, I0, Cos Φ, f, P, Q, Pwh, Qvh, as well as telemetry functions; 2-channel pulse output, 3-channel 4-20mA analog input, 1-channel 4-20mA analog output; Accident and protection event recording function; Real time waveform display and fault recording function. |
Standard configuration: 2 RS485 communication interfaces Optional: 1 fiber optic interface 2 Ethernet interfaces YCB-341 Incoming line backup automatic switching measurement and control device Current quick break protection Time limited quick break protection |
Timed overcurrent |
inverse-time overcurrent Incoming line backup self switching Control circuit disconnection alarm |
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Device malfunction alarm The opening and closing of local or remote circuit breakers; 16 channel switch signal acquisition, 10 channel switch signal output; Measurement display Ua、Ub、Uc、Uab、Ubc、Uca、Ia、Ib、Ic、UL、IL、CosΦ、f、p、Q、Pwh、Qvh Waiting for analog and telemetry functions; 2-channel pulse output, 3-channel 4-20mA analog input, 1-channel 4-20mA analog output; Accident and protection event recording function; Real time waveform display and fault recording function. |
Standard configuration: 2 RS485 communication interfaces Optional: 1 fiber optic interface 2 Ethernet interfaces YCB-342 Incoming self resetting device |
Current quick break protection |
Time limited quick break protection Definite time/inverse time overcurrent Control circuit disconnection alarm |
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Device malfunction alarm The opening and closing of local or remote circuit breakers; 16 channel switch signal acquisition, 10 channel switch signal output; Measurement display Ua、Ub、Uc、Uab、Ubc、Uca、Ia、Ib、Ic、UL、IL、CosΦ、f、p、Q、Pwh、Qvh Waiting for analog and telemetry functions; 2-channel pulse output, 3-channel 4-20mA analog input, 1-channel 4-20mA analog output; Accident and protection event recording function; Real time waveform display and fault recording function. |
Standard configuration: 2 RS485 communication interfaces Optional: 1 fiber optic interface 2 Ethernet interfaces YCB-343 Mother backup automatic measurement and control device Current quick break protection (can be set as closing quick break, low voltage lockout quick break) Time limited quick break protection |
Definite time/inverse time overcurrent |
Mother backup self investment Zero sequence voltage alarm Control circuit disconnection alarm |
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Device malfunction alarm The opening and closing of local or remote circuit breakers; 16 channel switch signal acquisition, 10 channel switch signal output; Measure and display analog and telemetry functions such as Ua1, Ub1, Uc1, Ua2, Ub2, Uc2, I-1, I-2, f, p, Q, Pwh, Qvh, etc; 2-channel pulse output, 3-channel 4-20mA analog input, 1-channel 4-20mA analog output; Accident and protection event recording function; Real time waveform display and fault recording function. |
Standard configuration: 2 RS485 communication interfaces Optional: 1 fiber optic interface 2 Ethernet interfaces YCD-351 Motor protection measurement and control device Current quick break protection Timed overcurrent inverse-time overcurrent Zero sequence current protection Negative sequence overcurrent protection low voltage protection |
overload protection
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locked-rotor protection Temperature protection Control circuit disconnection alarm |
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Device malfunction alarm The opening and closing of local or remote circuit breakers; 16 channel switch signal acquisition, 10 channel switch signal output; Measure and display analog quantities such as Ua, Ub, Uc, Uab, Ubc, Uca, Ia, Ib, Ic, I0, Cos Φ, f, P, Q, Pwh, Qvh, as well as telemetry functions; 2-channel pulse output, 3-channel 4-20mA analog input, 1-channel 4-20mA analog output; Accident and protection event recording function; Real time waveform display and fault recording function. |
Standard configuration: 2 RS485 communication interfaces Optional: 1 fiber optic interface 2 Ethernet interfaces YCD-352 Electric motor differential protection measurement and control device Differential quick break protection |
Ratio differential protection (second harmonic braking ratio differential) |
CT disconnection alarm and locking differential Temperature protection Control circuit disconnection alarm
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Device malfunction alarm 16 channel switch signal acquisition, 10 channel switch signal output; Measure and display analog and telemetry functions such as primary current (IA, IB, Ic), primary zero sequence current (I0h), secondary current (Ia, Ib, Ic), secondary zero sequence current (I0I), differential current (Icd1, Icd2, Icd3), braking current (Izd1, Izd2, Izd3), harmonic current (Ixb1, Ixb2, Ixb3), etc; 2-channel pulse output, 3-channel 4-20mA analog input, 1-channel 4-20mA analog output; Accident and protection event recording function; Real time waveform display and fault recording function. |
Standard configuration: 2 RS485 communication interfaces Optional: 1 fiber optic interface 2 Ethernet interfaces YCPT-361 PT monitoring device overvoltage protection Undervoltage protection |
grounding protection |
Zero sequence voltage alarm PT disconnection alarm PT switching
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Device malfunction alarm 16 channel switch signal acquisition, 10 channel switch signal output; Measure and display analog and telemetry functions such as Ua, Ub, Uc, Uab, Ubc, Uca, U0, f, etc; 2-channel pulse output, 3-channel 4-20mA analog input, 1-channel 4-20mA analog output; Accident and protection event recording function; Real time waveform display and fault recording function. |
Standard configuration: 2 RS485 communication interfaces Optional: 1 fiber optic interface |
2 Ethernet interfaces |
YCM-371 Universal measurement and control device Control circuit disconnection alarm |
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