Toshiba 15DLV16 Flat Panel Television User Manual
Contents
1. holes 01006323 TOSHIBA 6F 9EO090 6 Adjustments 6 1 Current setting 1 When detected current is in a range of 0 5 54 After confirming that the current value under normal load condition is in a range of 0 5 54 set the current adjusting knob to the desired detecting value 2 When detected current is above 54 Using an external CT current transformer properly suited for the detected Current value connect the secondary side of the CT to the input terminal of the relay Calculate the secondary current corresponding to the detected current value based on the CT ratio Then set the current adjusting Knob to this calculated value 6 2 Setting the detection delay time Setting time varies depending upon each individual application Adjust the detection delay time according to the following 1 Hotor load TO avoid detection during start up set the delay tire to approximately 120 of starting time Transformer load N If the inrush current inrush time varies depending upon capacity is large set the delay time to approximately 120 of this inrush time Genenrally 1f the capacity 15 small inrush time is short and therefore even when the adjusting knob is set at the minimum position there should not be any nuisance tripping 12 01005323 asini a 6F 9E 0090 6 3 Setting the Response delay time Adjust the set time according to the purpose of detection l e overcurrent or undercurrent The set t2. 10006323 TOSHIBA I NSTRUCTI ON MANUAL CURRENT RELAY RC803A HP 1 TOSHIBA CORPORATION 6F9E0090 1 1 292 1L 4 01009324 TOSHIBA 1 2 2 1 2 2 3 4 4 1 4 2 b 3 4 4 4 5 6 6 1 6 2 6 3 8 6 9 0090 CONTENTS General Description Check Before Using External Appearance Specifications 3 Descriptiono f Operatioa P 5 Applications 6 Overcurrent Detection on Hotors e 6 Undercurrent Detection on Motors 8 Limiting Starting Current of Rotors 9 Transformers 10 Heaters Lampe and Other Circuits 10 Mounting 10 Adjustaents 12 Current Setting 12 Setting the Detection Delay Time 12 Setting the Response Delay Time 3 Operationallest 13 Cover Removal aus s Lu arroces 17 01005494 TOSHIBA 6F 9E0090 Please thoroughly read this instruction manual before using the RC803A Curr
3. current this relay can automatically advance the starting resistance on the secondary side of the motor in this case the knob of the detection delay timar and that of the response delay timer should be kept at the minimum settings 01005393 01009324 TOSHIBA 6F9EO0090 4 4 Transformers To use this current relay for detecting overcurrent on transformers it is necessary to set the detection delay timer with the inrush current of transformer taken into consideration 4 5 Heaters Lamps and other Circuits This relay can be used to detect the disconnection of circuits by sensing the existence of current flow n other words if disconnection occurs current does not flow and an undercurrent condition is detected by the relay For example this relay can be used to detect the disconnection of heater circuits on constant temperature ovens or heatar circuits for insulators on transmission and distribution facilities In extremely cold regions 5 Hount ing See Fig 4 for uounting dieensions Be careful not to use this relay in the following conditions 1 Locations in aebient temperatures outside 10 50 2 Locations subject to high temperature steam or dripping water 3 Dusty dirty locations 4 Locations subject to vibration total amplitude 2 5mm or more 20 times sec or more and shock above 15G in 3 directions 01009323 TOSHIBA 6 9 0090 128 Hountino Fig 4 Dimensions 11 3 7 Hole
4. e Power Supply OA M Start PB it xz 13 PB j H 23 l4 ME Til T2 T3 121 z aire 4 Current relay Note The RC803 s output contacts are shown with Dower source applied Fig 2 Application Example using An External CT 01005393 ibn 6 9 0090 further when this relay is used in motor circuit the detection delay tiger should be set longer than the startinv time about 120 so that this relay is not actuated by inrush current If current flowinp in the main circuit becomes abnormal after the time Deriod of the detection delay timer has elapsed the relay is actuated when the set time of the response delay timer is over 4 2 Undercurrent Detection on Motors To utilize the undercurrent detection function the relay is used in a motor circuit with a fixed load to detect livht or no load conditions For example the case of a pump motor this relay is used to detect undercurrent when the volume Of water supplied in a water pipe is low or in case of a thread winding rachine when the tension of the thread drops Tom 6F9E 0090 AC3 Phase Power Supply Statrt PB Current relay Note The RC803 s output contacts are shown with Dower source applied Fig 3 Application Example 4 3 Limiting Startino current of Motors Many motors of medium and large capacity use a method to start by limiting starting current By detectino the main circuit
5. ent Sensing Relay 1 General Description This current relay is designed to detect current in AC circuits with a wide range of applications e t detection of abnoraai current of various electrical equipment due to overloads or broken circuits e 9 heater circuits detection of starting current to autoaaticaiiy advance the secondary resistance on induction wound rotor motor controllers During starting excessive current such as inrush current may exceed rated current flow in motor or transforaer circuits this current relay has an adjustable delay circuit to prevent it from operating during start up Further this current relay is fail safe The relay operates at the same time control Dower is applied and the relay is de energized when the input signal exceeds the preset level or control Dower is removed 2 Check Before Using Before using this relay check the following Doints If any defects are found contact the dealer from which you purchased this relay 2 1 External Appearance Check the relay for any missing Darts and for damage dirt rust and loosened screws caused during transportation 01006323 TOSHIBA 2 2 Specifications 6F9E0090 Rated Current Range of current sensing Input circuit voltage Type of Current Response delay time adjustable range Detection delay tile adjustable range Operating volt Accuracv v SPECIFICATIDHS 5A continuous 0 5 5A For current above t
6. his range use a CT current transforrer and connect the relay to its secondary side low voltage circuit below AC 600V To detect current in high voltage circuits use a CT and connect the relay to its secondary side Undercurrent Overcurrent 0 1 35 0 1 30s a5 132VAC 170 250VAC 50 60 2 10 TOSHIBA ITEM Ambient temp range Temp error Dielectric with stand voltage Impulse with stand voltage Insulation resistance Vibration Oscillation Impulse Overcurrent intensity Output contact rating 250VAC max 6F9E0090 SPECIFICATIONS 10 50 10 a t 330 Between terminals and ground 2000VACf or 1 min Between terminals and ground 1 X 40us at 4500V standard waveform Between terminals and ground 100M Ohms or more when measured with a 500VDC aegger Amplitude 2 5mm 20Hz 2G 156 40 times of max continuous current 54 for 1sec appliedtwice in accordance with FECIA Over Current SPDT Under Current SPDT TOSHIBA 6F9E0090 Inductive load Voltage Continuous 120 MS AC p f 0 4 Rating Designation oe 0 34 0 154 L R 15ms 0 14 ITEH SPECIFICATIONS Hysteresis Approx 10X of operating value Power consumption o Operating Power 3 5VA o Input Circuit 0 1VA when 5A is applied Height 75kg 1 7 Ib 3 Description of Operation When the detected current exceeds the detection circuit ope
7. ing lamp lights at the same time the relay operates 0100 324 TOSHIBA 6F 9E0090 b When undercurrent or disconnection is detected Caution At the same time the main circuit switch is turned ON the starting current and rated current flows and the relay is picked Up If current drops below the undercurrent set point the undercurrent State is detected and the relay drops out Refer to Fig 5 If input signal to this current relay is zero When stopped it is not possible to judge if it is undercurrent or in a disconnected state In this case it is recommended to have a circuit connecting a normally open auxiliary con tact of the main circuit switch in series with the alara or lamp circuit this will Drevent the relay fror signalling a fault condition during a normal shutdown 15 01006323 TOGHIRA 6F9E0090 6 If the relay does not operate in the above test check if the current setting is correct or if the input signal is above the set detection value f the input signal is correct check the operation of the relay by gradually reducing the setting of the current adjusting knob If the relay still does not operate it is defective n this case please contact the dealer from which you purchased the relay or Toshiba Power Source 12 Overcurrent Undercurrant Detected current Overcurrent detect ion Undercurrant et 73 detect ion 7 dd unns T1 Detection delay ti
8. ire for the response delay varies ger application Host applications may not need any delay time It is mainly used to prevent nuisance tripping ride through by ignoring momentary load gliches 7 Operational lest 1 Check both the control and detection circuits to confirm there is no mis wiring 2 Check if the current dedtction time delay and response time delay settings are correct 3 If the wiring ard settings are correct energize the control circuit and check if it is the proper voltage TOSHIBA 6F9E0090 4 When the Dower source is applied the relay is excited and the output contact s states are reversed The relationship between the input signal end the output contacts are shown in Table 2 Check this relationship during the test Output Contact Statis Power signal Overcurrent Undercurrent source operating Between NM Between Between level 5 and 7 6 and 7 8 and 10 9 and 10 Table 2 5 If no problem is found when the Dower source is applied turn the rain circuit switch ON and perform the following checks a In the case of a motor load If the set start up time delay is too short the relay may be actuated such a case reset the detection delay time adjusting knob accordingly After the start up time delay has expired apply current above the set detection value to confirm that the relay functions after the response delay time In addition check that the detection indicat
9. rating level the detection delay timer is actuated If over current is continuously detected for more then the detection delay time set value the overcurrent response delay timer is actuated Then if overcurrent is detected when the response delay timer has elapsed the overcurrent relay is actuated If current drops below the undercurrent detection set value the response delay timer is actuated and after the set tile has expired the undercurrent detection relay is actuated In the case of undercurrent detection the detection delay timer is not actuated 01006323 TOSHIBA 222 6950090 Detection delay time Overcurrent detecting Operation delay time Hysteresis width Return point Relay OFF Current 2 Hysteresis H i 4 __y Hysteresis A ES 3 width 1 Detection delay circuit operati Undercurrent detecting Operation leve 03 0 454 elay Time N Undercurrent detecting Fig 1 Characteristics 4 Application 4 1 Overcurrent Detection on Hotors An application example Is shown in Fig 2 In this circuit an excessive load is detected by detecting the overcurrent of a motor and the main circuit is opend to Protect 5 01009424 TOSHIBA 6 9 0090 the motor from being damaged If the detected current is above 54 and in case of a high voltage circuit use an external CT and connect the secondary side of CT to the relay as shown in the following figure AC3 Phas
10. re T2 Overcurrent detecting resgonse delay timer T3 Undercurrent detecting resgonse delay timer Fig 5 Relay Operation 16 01005303 6F9E0090 8 Cover Removal To adjust the current and time settings the cover must be raaoved Remove the cover by applying a force in the direction of the arrow as shown below To replace the cover place the projection of the cover in the slip out oreventive hole and then insert the bosses of the cover into the 2 holes at the upper left and right Cover Slip out preventive projection Slip out preventive hole 17 11006393 TOSHIBA CORPORATION
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