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T-GPS User Manual Version 1.2 | 34

6.5

Antenna installation

The following are some suggestions for the correct installation of the antenna. Figure 6.8 shows the

correct and incorrect method of mounting.

Figure 6.8: Antenna Mounting

6.6

Location

The T-GPS3000A should be mounted in a location where the signal is strongest and the antenna

cable length is minimised. Note, the distance between the antenna and the unit should not

exceed 90m.

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Summary of Contents for T-GPS3000

Page 1: ...T GPS3000 Time Synchroniser User Manual V1 2 Kehui International Ltd 2 Centrus Mead Lane Hertford Hertfordshire SG13 7GX United Kingdom Phone 44 1920 358990 Fax 44 1920 358991 Website http kehui com...

Page 2: ...ct is subject to design or technical changes without prior notice When product improvement or technical changes occur you can check the information through Kehui International Ltd website http www keh...

Page 3: ...ule II 16 4 8 TTL Output Module 17 4 9 RS485 Output Module 18 4 10 IRIG B AC Output 18 4 11 DCF77 Signal Output Module 19 4 12 Alarm Output Module 19 4 13 Ethernet module 19 4 14 IRIG B Optical Input...

Page 4: ...l Settings 35 7 3 Menu Set up 36 7 4 Output Ports 39 8 MAINTENANCE AND TROUBLESHOOTING 40 8 1 Inspection 40 8 2 Troubleshooting 40 8 3 Alarms 41 9 TRANSPORTATION 41 9 1 Transportation considerations 4...

Page 5: ...hazard that could result in serious or fatal injury Indicates a potential hazard which if not avoided may result in minor personal injury or property damage Indicates that it contains important inform...

Page 6: ...Recorders DFRs Sequence of Event Recorders SERs Supervisory Control and Data Acquisition SCADA Systems Relays and other similar equipment Frequency monitoring comparing the difference between working...

Page 7: ...put and 422 485 output AC output DCF77 output Dry contact Serial Output RS232 and RS422 485 Ethernet output Pulse output 1 PPS 1PPM and 1PPH signal pulse width is 200ms Configuration Master or slave w...

Page 8: ...is off it indicates that the system is synchronised If it blinks during operation it indicates that the T GPS3000A has lost synchronisation 1PPS Pulse Indicator If the light is blinking the system is...

Page 9: ...er different modules according to their specific application requirements 3 4 Outputs There are different signal outputs for different modules which can be changed by changing jumper or terminals Puls...

Page 10: ...odules for redundancy one Power Supply module and one Alarm module There will again be 6 blank modules for other options 3 5 Customisation T GPS3000A is configured using a selection of modules and the...

Page 11: ...ws A ON OFF to power on or off the GPS B Fuse 5A fuse is inside Note The unit should be powered off when replacing the fuse C Terminals The terminals marked and are for the power supply Earth this dev...

Page 12: ...es whether the first level signal input is normal RUN1 indicates whether the first level signal is running normally IRIG B2 indicates whether the input of the second level signal is normal RUN2 indica...

Page 13: ...s whether the first level signal input is normal RUN1 indicates whether the first level signal is running normally IRIG B2 indicates whether the input of the second level signal is normal RUN2 indicat...

Page 14: ...pulse via the jumper on the PCB The 8S1 to 8S12 represents outputs 1 to 12 The detailed setting method is as following If 8S1 is in location a its output pulse is set to A If 8S1 is in location b its...

Page 15: ...baud rate of the serial port output When pins 1 to 4 of the DIP switch are turned to ON the status is 1 otherwise it is status 0 Pins 1 and 2 control the baud rates of COM1 and COM2 Pins 3 and 4 cont...

Page 16: ...the b state COM1 port outputs PPS1 type pulse signal When 20S1 is in the c state COM1 port outputs TXD2 type pulse signal When 20S1 is in the d state COM1 port outputs TXD1 type pulse signal 20S2 to...

Page 17: ...have opposite polarities as shown below A B C A B C TTL output format Jumper 10S1 to 10S12 controls outputs 1 to 12 the detailed settings are as follows If 10S1 is as shown in a pair 1 outputs pulse...

Page 18: ...s are as follows Putting the jumper in A B C or D produces a Pulse and DC provides an IRIG B DC output The signal format for pulse A B C and D is as 1 below however if the output 2 is required the con...

Page 19: ...the Sync Lost Alarm becomes the IRIG B 1 Alarm and the IRIG B Alarm becomes the IRIG B 2 Alarm The alarm output is a relay with capacity 220V 1A 4 13 Ethernet module Each Ethernet Module can output o...

Page 20: ...signals are connected and operating normally There are four indicators on the panel from top to bottom IRIG B1 RUN1 IRIG B2 and RUN2 IRIG B1 indicates whether the first optical signal input is present...

Page 21: ...1 is controlled by Pulse A When 20S1 is as shown in c Optical output 1 is controlled by Pulse B When 20S1 is as shown in d Optical output 1 is controlled by Pulse C When 20S1 is as shown in e Optical...

Page 22: ...nd 3 are positive while 2 and 4 are negative Pin 5 is not used Pins 6 9 of the DB9 output provide two TTL level signals pins 6 and 8 are positive while 7 negative and 9 are negative Optical and electr...

Page 23: ...emaining positions DC A D and TXD 20S1 g l are similar except their on off states are opposite to the corresponding signals above The other outputs are controlled in the same manner but by the jumpers...

Page 24: ...Module This function requires two modules input and output and is used where there is a large distance 300m between the main clock and subsidiary clocks Due to the length of the transmission path a d...

Page 25: ...pensation will be performed when ON Switch 4 When ON it is used as IRIG B input I board When OFF it is used as IRIG B Input II Module The Delay Compensation Input Module can be set via the GPSDelayTim...

Page 26: ...compensation input board of the extended clock generally needs to compensate 20 units that is 2us Because the transmission path delay is 290 meters the delay is 1us so for 500 meters the delay is appr...

Page 27: ...are as follows When the 19S1 jumper is in the state shown in Figure a the first channel outputs a controlled rising edge IRIG B optical signal When 19S1 jumps to the state of figure b the first channe...

Page 28: ...set through the GPSDelayTimePanel exe software but the serial port connection is a little more complicated The serial line needs to be connected to the 19XS8 single row pin on the printed board throu...

Page 29: ...1 S and provide UTC time date and the precise location ii Pulse Generation Circuit This outputs a pulse per second 1 PPS per minute 1PPM or per hour 1 PPH The pulse can be TTL a wet contact or a dry c...

Page 30: ...T GPS3000 corresponds with the order If there are any of the above issues at the point of delivery ensure Kehui is notified without delay 6 2 Installation T GPS3000 is designed for installation in a s...

Page 31: ...T GPS unit has sufficient outputs to provide a synchronising signal to all IEDs in the substation The Master is synchronised directly from the satellite GPS signal picked up by the antenna The input i...

Page 32: ...cation with an unobstructed view of the sky The antenna has diameter 100 mm and total height 180 mm It is mounted on a rod having a diameter of 32 mm the antenna and its mounting kit are shown below t...

Page 33: ...le use the short yellow green cable provided The antenna cable is connected to the SPD the output of the SPD is connected to the Signal Input Antenna module using the additional cable 3 m long Do not...

Page 34: ...ation of the antenna Figure 6 8 shows the correct and incorrect method of mounting Figure 6 8 Antenna Mounting 6 6 Location The T GPS3000A should be mounted in a location where the signal is strongest...

Page 35: ...time via the LED and the Lost Synchronisation Indicator will no longer blink 7 2 Front Panel Settings There are four buttons on the front panel ITEM ENTER which control the settings of the T GPS3000 F...

Page 36: ...pecific time 14 21 33 as an example press the button until the third LED blinks press button to set as 1 then press the button the LED blinks then press the button to set as 4 Do the same to set the m...

Page 37: ...fth digit from the left is the unit value of this hour press to enter and press to set it from 0 to 9 The seventh digit from the left is tens of the minute at which DST starts press to enter and press...

Page 38: ...ss to enter and press to set it from 0 to 2 the fifth digit from the left is the units press to enter and press to set it from 0 to 9 The seventh digit from the left is tens of the minute at which DST...

Page 39: ...8 information bits one stop bit XN Exclusive Or Not check check the time data between frame T and check bit ASC II code c Information format once per second the format is as follows D D D D D D D D D...

Page 40: ...k the connection of the wires and cables If all these connections are good but problems persist the ensuing trouble shooting procedures should be followed Turn on the power if the LED displays is no s...

Page 41: ...correctly 9 Transportation 9 1 Transportation considerations Use the transport boxes provided and observe the environmental conditions specified in the technical data sheet 9 2 Storage conditions sto...

Page 42: ...Packing list No Materials Quantity 1a T GPS Master Unit includes mandatory modules Power Supply Module Antenna Module Alarm Module Signal Out to slave Module With 6 free slots 1 1b T GPS Slave unit P...

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