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Instruction manual – AP902 Arc Protection Unit

31 (35

)

A1008B

11

T

ROUBLESHOOTING GUIDE

Problem

Check

Cross reference

Sensor does not activate when

testing

Fiber sensor connection

Refer to « Arc Sensors Series -

Instruction booklet »

Camera (or other test equipment)

flash intensity

Chapter 10 of this manual

Trip relay(s) does not operate

even if sensor is activated

Dipswitch settings

Chapter 3.5 of this manual

Table 11-1 Troubleshooting guide

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Summary of Contents for AP902

Page 1: ......

Page 2: ...d inspect the equipment to become familiar with it before trying to install operate service or maintain it Electrical equipment should be installed operated serviced and maintained only by qualified personnel Local safety regulations should be followed No responsibility is assumed by ICE for any consequences arising out of the use of this material We reserve right to changes without further notice...

Page 3: ... SENSORS 16 4 1 Sensor Type Dependencies 16 5 SYSTEM SELF SUPERVISION 17 6 APPLICATION EXAMPLES 18 6 1 MV or LV application with current and light condition 18 6 2 Circuit breaker failure protection CBFP 19 7 CONNECTIONS 20 7 1 Outputs 21 7 1 1 Trip relays T1 and T2 21 7 1 2 Trip relays T3 and T4 21 7 1 3 Binary output BO1 21 7 1 4 System failure relay SF 21 7 2 Inputs 22 7 2 1 Arc fiber optic loo...

Page 4: ...e 29 10 5 Test plan example 30 11 TROUBLESHOOTING GUIDE 31 12 TECHNICAL DATA 32 12 1 Protection 32 12 2 Auxiliary voltage 32 12 3 Trip relays T1 T2 T3 T4 32 12 4 Binary Output BO1 32 12 5 Binary Inputs BI1 BI2 32 12 6 Disturbance tests 33 12 7 Voltage tests 33 12 8 Mechanical tests 33 12 9 Casing and package 33 12 10Environmental conditions 34 ...

Page 5: ...er CBFP Circuit breaker failure protection EMC Electromagnetic compatibility EPROM Erasable programmable read only memory HW Hardware LED Light emitting diode LV Low voltage ms Millisecond MV Medium voltage NC Normally closed NO Normally open SF System failure SW Software uP Microprocessor ...

Page 6: ...ghest level of dependability by continuously monitoring all internal system functions along with external connections AP902 is designed according to the latest protection relay standards and is hence suitable for installations in rough environments such as utility traditional or renewable power plants off shore marine oil and gas mining steel or any other heavy industry applications and as well co...

Page 7: ...through the binary bus Main features of AP902 80 265Vac dc auxiliary power supply or optional 18 72Vdc power supply 3 arc fiber loop channel 2 binary inputs nominal voltage of 24 or 110 or 220Vdc 3 normally open trip relay outputs direct trip circuit rated 1 normally open or optionally normally closed electronic lock out trip relay output direct trip circuit rated 1 binary output 24Vdc 1 system fa...

Page 8: ...tion manual AP902 Arc Protection Unit 8 35 A1008B 2 2 SIMPLIFIED BLOCK DIAGRAM AP902 simplified block diagram in Figure 2 2 shows the main components of the AP902 unit Figure 2 2 AP902 simplified block diagram ...

Page 9: ...unction is latched steady light To clear the LED the SET button should be pressed In case that a fiber sensor connection drops off or configuration mismatch situation is detected by system self supervision function new sensor connected without running auto configuration system setup see chapter 3 3 1 the corresponding LED will start flashing and the ERROR LED will activate The Binary I O LEDs are ...

Page 10: ...uity or perform system set up see chapter 3 3 1 Auto configuration system setup S2 Amber Normal status Fiber sensor channel activated Fiber sensor drops off or system set up not performed Check why sensor activated or check the sensor continuity or perform system set up see chapter 3 3 1 Auto configuration system setup S3 Amber Normal status Fiber sensor channel activated Fiber sensor drops off or...

Page 11: ...e remaining 3 seconds After total time of 5 seconds all LEDs are turned off During this system setup the dipswitch setting are also stored in non volatile memory All sensor inputs will remain operational even when not auto configured The auto configuration is only used for self supervision purposes Note in order to redo auto configuration for a unit containing less connections binary inputs output...

Page 12: ...may be selected based on arc light only or arc light and current thresholds or other tripping criterion such as undervoltage or similar Current thresholds or other tripping criterion may be applied to binary input BI1 for blocking trip caused by natural light sources Also the CBFP time can be selected by dipswitch setting according to the requirement of the CBFP function Dipswitches are located at...

Page 13: ...operate as non latched Note Trip relays T3 and T4 are always latched Binary output BO1 function is always non latched 5 100 150ms CBFP time setting CBFP time is set to 100ms CBFP time is set to 150ms 4 Scheme select Scheme selection Refer to chapter 3 5 1 and 6 Refer to chapter 3 5 1 and 6 3 Scheme select Scheme selection Refer to chapter 3 5 1 and 6 Refer to chapter 3 5 1 and 6 2 Scheme select Sc...

Page 14: ... scheme 0 The AP902 logic scheme 0 can be not only applied as stand alone arc protection unit but also widely used as non selective outgoing feeder compartment protection Depend on this scheme user can either select light only mode or arc light overcurrent mode to trip all circuit breakers The detailed instruction is described in AP SAS Standard Arc Schemes Instruction booklet Figure 3 2 AP902 log...

Page 15: ...02 logic scheme I 3 6 NON VOLATILE MEMORY All critical system data including dipswitch settings and auto configuration file described in chapter 3 3 1 are stored in EPROM non volatile memory to ensure correct operation and full self supervision even if auxiliary power is lost temporarily Also all LED indications described in chapter 3 1 are stored in non volatile memory in order to provide quick r...

Page 16: ...are typically installed in metal clad compartments providing quick accurate location of the faulted area Arc light fiber loop sensors are installed typically to cover a wider protected area with one fiber when no need for more exact fault location exists The detailed instructions are described in Arc Sensors Series Instruction booklet 4 1 SENSOR TYPE DEPENDENCIES Different sensor types can be util...

Page 17: ...RROR LED is lit If a fiber sensor failure occurs the unit will go into ERROR mode The error LED will turn on the SF relay will release and the corresponding faulty fiber sensor channel LED will start blinking In this situation the unit is still in protection mode but with the faulty fiber sensor channel blocked If the error is resolved the unit will automatically clear the SF status This means tha...

Page 18: ...ay be monitored by non ICE products also e g generic feeder protection relay and the total operation time is then dependent on device feeding the overcurrent signal to AP902 The sensor channel S1 can be set to operate on light only even if other channels operate on both conditions of arc light and overcurrent Figure 6 1 shows an example of a system applying both overcurrent and arc light for tripp...

Page 19: ...overcurrent relay 50 51 is applied to monitor the overcurrent condition 6 2 CIRCUIT BREAKER FAILURE PROTECTION CBFP AP902 includes a selective circuit breaker failure function which can be enabled by dipswitch setting see chapter 3 5 Dipswitch settings When enabled the breaker failure function activates when the tripped breaker fails to operate Breaker failure function is activated if AP902 detect...

Page 20: ...Instruction manual AP902 Arc Protection Unit 20 35 A1008B 7 CONNECTIONS Figure 7 1 AP902 terminals at rear plate ...

Page 21: ...xiliary power This normally closed relay output can be used for tripping contactor controlled devices Alternately T3 can be ordered as normally open NO type relay from the factory T3 relay follows the operation of T1 and activates whenever T1 is activated Trip relay T4 is a common trip relay that operates anytime T1 or T2 relay operates and can be used either for tripping one more disconnecting de...

Page 22: ...s always reserved for second trip criteria signal In the most typical application AP902 is receiving overcurrent information from ICE AP910 device Overcurrent information may come also from NP900 Series protection relays Alternately any other signal such as undervoltage or similar can be used as second trip criteria along with light information Note when AP902 receives overcurrent signal from NP90...

Page 23: ... Arc Protection Unit 23 35 A1008B 7 3 AUXILIARY VOLTAGE The auxiliary power supply voltage is 80 265Vac dc Optionally an 18 72Vdc version is available After powering up the unit protection is active and operational within 50ms ...

Page 24: ...Instruction manual AP902 Arc Protection Unit 24 35 A1008B 8 WIRING DIAGRAM Figure 8 1 Wiring diagram of AP902 unit ...

Page 25: ...2 Arc Protection Unit 25 35 A1008B 9 DIMENSIONS AND INSTALLATION AP902 is either door mounted or panel mounted in standard 19 inch rack height of 4U and 1 8 of a unit wide Figure 9 1 AP902 dimensions in millimetres side view ...

Page 26: ...Instruction manual AP902 Arc Protection Unit 26 35 A1008B Figure 9 2 AP902 cut out for panel mounting millimeters ...

Page 27: ...nding sensor channel indication LED status is changed to ON 4 Verify the relay output s activation s by checking the circuit breaker status or by monitoring trip contact status The circuit breaker should open or contacts operate Note A best practice is to operate the circuit breaker at testing 5 Verify that the corresponding relay output s LED s indication status is changed to ON 6 If binary outpu...

Page 28: ... ON 7 If binary output BO1 signal is utilized verify the BO1 signal activation by status change of relevant input where binary output signal is connected or by measuring the signal output voltage 8 If binary output signal is utilized verify that BO1 LED is lit Note that BO1 signal is a non latched type 9 If other binary input BI2 is in use verify correct operation by activating the input 10 Activa...

Page 29: ...ports However if it is deemed necessary a site timing test may be conducted using below instructions 1 Use a calibrated relay test set 2 Connect an output from the relay test set to camera flash type Canon Speedlite 430EX or equivalent input for initializing the flash and configure a relay test set timer to be started simultaneously with flash 3 connect AP902 trip output T1 T2 T3 or T4 to relay te...

Page 30: ... Light current Remark Sensor channel 1 setting Sensor channel 2 setting Sensor channel 3 setting Master trip binary input in use Yes No Circuit breaker failure protection CBFP in use Yes No Object activated LED indication T1 T2 T3 T4 active BO1 active Fiber sensor channel 1 Fiber sensor channel 2 Fiber sensor channel 3 BIN 1 BIN 2 Tested by Approved by ...

Page 31: ...nsor does not activate when testing Fiber sensor connection Refer to Arc Sensors Series Instruction booklet Camera or other test equipment flash intensity Chapter 10 of this manual Trip relay s does not operate even if sensor is activated Dipswitch settings Chapter 3 5 of this manual Table 11 1 Troubleshooting guide ...

Page 32: ...Vac dc option 18 72Vdc Maximum interruption 100ms Maximum power consumption 5W Standby current 90mA 12 3TRIP RELAYS T1 T2 T3 T4 Number 3 NO 1 NC or 4 NO Rated voltage 250V ac dc Continuous carry 5A Make and carry for 0 5s 30A Make and carry for 3s 16A Breaking capacity DC when time constant L R 40ms 40W 0 36A at 110 Vdc Contact material AgNi 90 10 12 4 BINARY OUTPUT BO1 Rated voltage 24V dc Rated ...

Page 33: ...V 5 50ns Surge According to EN61000 4 5 09 96 level 4 Between wires 2 kV 1 2 50µs Between wire and earth 4 kV 1 2 50µs RF electromagnetic field test According to EN 61000 4 3 class III f 80 1000MHz 10V m Conducted RF field According to EN 61000 4 6 class III f 150 kHz 80Mhz 10V 12 7VOLTAGE TESTS Insulation test voltage acc to IEC 60255 5 2 kV 50Hz 1min Impulse test voltage acc to IEC 60255 5 5 kV ...

Page 34: ...Instruction manual AP902 Arc Protection Unit 34 35 A1008B 12 10 ENVIRONMENTAL CONDITIONS Specified ambient service temp range 35 70 C Transport and storage temp range 35 70 C Relative humidity Up to 97 ...

Page 35: ...Instruction manual AP902 Arc Protection Unit 35 35 A1008B ...

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