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Ice AP901, Instruction Manual

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Instruction manual – AP901 Arc Protection Unit 

 

 23 (39

)

 

A1017B 

 

6.3

 

C

IRCUIT BREAKER FAILURE PROTECTION 

(CBFP) 

AP901 includes a selective circuit breaker failure function which can be enabled by dipswitch 
setting (see chapter 3.5). When enabled, the breaker failure function activates when the tripped 
breaker fails to operate. Breaker failure function is activated if AP901 detects the presence of 
light  after  a  set  operate  time.  When  AP901  is  set  to  operate  on  light  and  current  both 
parameters must  persist  to  activate  CBFP.  Breaker failure  can  be set  to  operate  either  on 
100ms or 150ms delay (see chapter 3.5).

  

   

Summary of Contents for AP901

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: ...n volatile memory 16 4 ARC SENSORS 17 4 1 Sensor Type Dependencies 17 5 SYSTEM SELF SUPERVISION 18 6 APPLICATION EXAMPLES 19 6 1 MV or LV application with current and light condition 19 6 2 Wind power application example light only condition 21 6 3 Circuit breaker failure protection CBFP 23 7 CONNECTIONS 24 7 1 Outputs 25 7 1 1 Trip relays T1 and T2 25 7 1 2 Trip relays T3 and T4 25 7 1 3 Binary o...

Page 4: ...0 4 Testing arc flash protection unit operation time 33 10 5 Test plan example 34 11 TROUBLESHOOTING GUIDE 35 12 TECHNICAL DATA 36 12 1 Protection 36 12 2 Auxiliary voltage 36 12 3 Trip relays T1 T2 T3 T4 36 12 4 Binary Output BO1 36 12 5 Binary Inputs BI1 BI2 37 12 6 Disturbance tests 37 12 7 Voltage tests 37 12 8 Mechanical tests 38 12 9 Casing and package 38 12 10Environmental conditions 38 ...

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: ... heavy industry applications and as well commercial and institutional electrical systems AP901 is suitable for either medium voltage or low voltage switchgear and motor control center applications in both new and retrofit installations 2 1 ARC PROTECTION UNIT AP901 FEATURES AP901 is a multipurpose arc flash protection unit and can be applied for variety of applications AP901 can be used as a stand...

Page 7: ...Instruction manual AP901 Arc Protection Unit 7 39 A1017B Figure 2 1 Arc protection unit AP901 ...

Page 8: ...uction manual AP901 Arc Protection Unit 8 39 A1017B 2 2 SIMPLIFIED BLOCK DIAGRAM AP901 simplified block diagram in Figure shows the main components of the AP901 unit Figure 2 2 AP901 simplified block diagram ...

Page 9: ... The sensor LED activation function is latched steady light To clear the LED the SET button should be pressed In case of a loose sensor wire or configuration mismatch new sensor attached without running auto configuration system setup see chapter 3 3 1 situation the corresponding LED will start flashing and the ERROR LED will activate The Binary I O LEDs are indicating the I O line status If any o...

Page 10: ...loose connection or system set up not performed also activated by pressure information Check why sensor activated or check the sensor wire connection or perform system set see chapter 3 3 1 S3 Amber Normal status Sensor channel 3 activated by light information Sensor channel 3 loose connection or system set up not performed also activated by pressure information Check why sensor activated or check...

Page 11: ... during the 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 inp...

Page 12: ...tion Tripping may be selected based on arc light only or arc light and current thresholds or other tripping criteria such as undervoltage or similar Current threshold or other tripping criteria may be applied to binary input BI1 for blocking trip caused by natural light sources Also the CBFP scheme may be enabled using the dipswitches Dipswitches are located at the back of the unit for easy access...

Page 13: ...nd T2 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 sel...

Page 14: ... scheme 0 The AP901 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 select either 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 AP901 log...

Page 15: ... utilized in selective arc protection solution The fiber sensor S1 monitors the outgoing feeder cable compartment The fiber sensor S2 monitors the corresponding feeder breaker compartment and busbar compartment Trip contact T1 is responsible for tripping circuit breaker of the outgoing feeder The detailed instruction is described in AP SAS Standard Arc Schemes Instruction booklet Figure 3 3 AP901 ...

Page 16: ...tile 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 recovery of the system status indication even if auxiliary power is lost temporarily This feature is especially important if auxiliary power is lost after tripping Non volatile mem...

Page 17: ...lled 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 utilized with the AP901...

Page 18: ... ERROR LED is lit If a 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 sensor channel LED will start blinking In this situation the unit is still in protection mode but with the faulty sensor channel blocked If the error is resolved the unit will automatically clear the SF status This means that SF relay will ...

Page 19: ...nd the trip relay will be activated in 7ms The overcurrent condition may be monitored by NP900 Series protection relays and the total operation time is then dependent on device feeding the overcurrent signal to AP901 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 applyi...

Page 20: ...nt tripping criteria for sensor channels S2 S3 and S4 The sensor channel S1 monitoring the zone before CT is set to operate on light only The current threshold monitoring signal may come either from an external overcurrent relay or from AP910 arc protection unit In this example an overcurrent relay 50 51 is applied to monitor the overcurrent condition ...

Page 21: ... for up to 12 point sensors Additionally one fiber optic loop sensor channel is available as an option In this application three sensor channels with three sensors in each channel are utilized Also a fiber loop sensor for monitoring the generator winding and terminations is utilized In the event of arc light in any of the compartments containing a sensor the AP901 unit will execute a trip to all t...

Page 22: ...Instruction manual AP901 Arc Protection Unit 22 39 A1017B Figure 6 2 Typical wind power application by AP901 ...

Page 23: ...etting see chapter 3 5 When enabled the breaker failure function activates when the tripped breaker fails to operate Breaker failure function is activated if AP901 detects the presence of light after a set operate time When AP901 is set to operate on light and current both parameters must persist to activate CBFP Breaker failure can be set to operate either on 100ms or 150ms delay see chapter 3 5 ...

Page 24: ...Instruction manual AP901 Arc Protection Unit 24 39 A1017B 7 CONNECTIONS ...

Page 25: ...g the auxiliary power supply the electronic lock out relay will return to the contact condition prior loosing the auxiliary 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 tr...

Page 26: ... with transceiver and receiver Tx Rx When the fiber optic loop sensor is connected to the unit one end is connected to Tx and another to Rx This sensor loop is then continuously monitored by means of test light pulse travelling through the loop In case of discontinuity in the loop the unit goes into error mode and activates the error LED and SF relay output For details on sensors refer to Arc Sens...

Page 27: ...s see chapter 3 5 The inputs are activated by connecting a dc signal exceeding the specified nominal threshold level of the corresponding input There are three different nominal threshold levels available 24 or 110 or 220 Vdc The desired threshold value has to be specified when ordering The actual activation of the binary input occurs at 80 of the specified nominal threshold value i e 19 Vdc 88 Vd...

Page 28: ...Instruction manual AP901 Arc Protection Unit 28 39 A1017B 8 WIRING DIAGRAM Figure 8 1 Wiring diagram of AP901 unit ...

Page 29: ...1 Arc Protection Unit 29 39 A1017B 9 DIMENSIONS AND INSTALLATION AP901 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 AP901 dimensions in millimeters side view ...

Page 30: ...Instruction manual AP901 Arc Protection Unit 30 39 A1017B 47 23 5 159 168 M4 Figure 9 2 AP901 cut out for panel mounting millimeters ...

Page 31: ...e corresponding 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 bi...

Page 32: ... 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 33: ...reports 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 Metz 20B1 or equivalent input for initializing the flash and configure a relay test set timer to be started simultaneously with flash 3 connect AP901 trip output T1 T2 T3 or T4 to relay test set inp...

Page 34: ...hannel 2 3 4 setting Master trip binary input in use Yes No Circuit breaker failure protection in use Yes No Object activated LED indication T1 T2 T3 T4 active BO1 active Sensor channel 1 Sensor 1 Sensor 2 Sensor 3 Sensor channel 2 Sensor 1 Sensor 2 Sensor 3 Sensor channel 3 Sensor 1 Sensor 2 Sensor 3 Sensor channel 4 Sensor 1 Sensor 2 Sensor 3 Fiber sensor channel option BIN 1 BIN 2 Tested by App...

Page 35: ...Sensor does not activate when testing Sensor cable wiring 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 36: ... and arc light L 12 2 AUXILIARY VOLTAGE Us 80 265Vac dc option 18 72Vdc Maximum interruption 100ms Maximum power consumption 5W Standby current 90mA 12 3 TRIP 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 ...

Page 37: ...everity class 4 Air discharge 15kV Contact discharge 8kV Fast transients EFT According to EN61000 4 4 class III and IEC801 4 level 4 Power supply input 4kV 5 50ns other inputs and outputs 4kV 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 Conduc...

Page 38: ...t acc to IEC 60255 21 2 20g 1000 bumps dir 12 9 CASING AND PACKAGE Protection degree front IP 50 Protection degree back IP 20 Dimensions W x H x D mm 45 x 164 x 157mm Weight 0 7kg 1 0 kg with package 12 10ENVIRONMENTAL CONDITIONS Specified ambient service temp range 35 70 C Transport and storage temp range 40 70 C Relative humidity Up to 97 ...

Page 39: ...Instruction manual AP901 Arc Protection Unit 39 39 A1017B ...

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