Instruction/ maintenance manual of the product Current Relay RC803A-HP1 Toshiba
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TOSHIBA I NSTRUCTI ON MANUAL CURRENT RELAY RC803A-HP1 TOSHIEA CORPORATION.
- TOSHIBA 6F9E0090 CONTENTS 1. General Descrigtion __-----_-__----____--------------------- 2 2. Check Before Using -__-----__-_---_-_______________________- 2 2.1 External Amearance -_-_-_---_-__-__-_---------------- 2 2.2 Specifications _--_---_-__-__--_-__------------------- 3 3.
- =rosHl=A 6F9E0090 Please thoroughly read this instruction manual before using the RC803A Current SensinD Relay. 1. General DescriDtion This current relay is designed to detect current in AC circuits with a wide range of aDDiications, e.t., detection of abnoraai current of VariOUS electrical eauiment due to overloads or broken circuits (e.
TOSHIBA 6F9EO090 2.2 Specifications _____________-_-________________________------------------------------ ITEH Rated Current Range of current sensing Inout circuit voltage Type of Current ReSDOnSe delay time-adjustable range Detection delay tile-adjustable range Operating volt.
- TOSHIEA 6F9E0090 ITEH Ambient temp. range Temp. error Dielectric with- stand voltage Imgulse with- stand voltage Insulation resistance Vibration -Oscillation -1aoulse Overcurrent intensity Output contact rating (250VAC aax. I SPECIFICATIORS -10 - *SO% +10X at t30Y Between terminals and ground 2DOOVAC for 1 #in.
- TOSHIBA 6F9E0090 WEHA AC Rating Designation B300 Inductive load t-K&- 120 AC 240 24 DC 120 240 ITEH SPECIFICATIONS Hysteresis AgDrox. 10X of ooerating value. Power consumption oDperating Power 3.5VA olnput Circuit D.lVA (when 5A is applied) Height .
TOSHIBA 6F9E0090 Detection delay .I .pL1 mrellt 4 0 level (0.3-O.b5A) Undercurrent detect img FiD. 1 Characteristics 1. APDl ication 4.1 Overcurrent Detection on Hotors An aDDlication example Is shown in Fig.
TOSHIBA 6F9Eoo90 the uotor from being damaged. If the detected current is above !iA. and in case of a high voltage circuit, use an external CT and connect the secondary side of CT to the relay as show.
- TOSHIBA 6F9E0090 further, when this relay is used in a uotor circuit, the detection delay timer should be set lonfler than the startinv time (about 120%) so that this relay is not actuated by inrush current. If current flowinp in the uain circuit becomes abnormal after the tiee Deriod of the detection delay timer has elapsed.
TOSHIBA 6F9EOO90 ACJ-Phase Power SUDDIY Current relay Note: The RC803’s outDut contacts are shown with Dower source aDDl ied. Fig. 3 Application Example 4.3 Limiting Startino current of Rotors Many eotors of uediua and large capacity use a aethod to start by limiting starting current.
ToSHIEA 6F9EOO90 4.4 Transformers To use this current relay for detecting overcurrent on transformers. it is necessary to set the detection delay tiler with the inrush current of transforeer taken into consideration.
TOSHISA 6F9E0090 50 3-$7 Hole 7 z Hountino holes Fig. 4 Dimensions B !3 t. - ll-.
TOSHIBA GF9EOO90 6. AdjustDents 6.1 Current setting (1) When detected current is in a range of 0.5 - 5A: After confirming that the current value under noraal load condition is in a range of 0.5 - SA, set the current adjusting knob to the desired detecting value.
- TOSHIEA 6F9Eoo9o 6.3 Setting the ResDonse delay time Adjust the set tile according to the ourgose of detection (I.e. overcurrent or undercurrent). The set tire for the resoonse delay varies ger aDDllcation. Host applications cay not need any delay tile.
TOSHIBA 6F9E0090 (4) When the Dower source is aDDlied. the relay is excited and the OutDut contact’s states are reversed. The relationshiD between the input signal end the outDut contacts are shown in Table 2. Check this relationship during the test.
TOSHIBA 6F9E0090 (b) When undercurrent or disconnection is detected At the sale time the lain circuit switch is turned OH, the starting current and rated current flows, and the relay is picked U P . If current drODS below the undercurrent set point, the undercurrent State is detected and the relay drops out.
TOSHIBA 6F9E0090 (6) If the relay does not operate in the above test, check if the current setting is correct or if the ingut signal is above the set detection value. If the ingut signal is correct, check the operation of the relay by gradually reducing the setting of the current adjusting knob.
- TOSHIBA 6F9E0090 8. Cover Reroval To adjust the current and time settings the cover must be raaoved. Reaove the cover by amlYing a force in the direction of the arrow as shown below.
- TOSHIBA CORPORATION.
An important point after buying a device Toshiba Current Relay RC803A-HP1 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Toshiba Current Relay RC803A-HP1 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Toshiba Current Relay RC803A-HP1 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Toshiba Current Relay RC803A-HP1 you will learn all the available features of the product, as well as information on its operation. The information that you get Toshiba Current Relay RC803A-HP1 will certainly help you make a decision on the purchase.
If you already are a holder of Toshiba Current Relay RC803A-HP1, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Toshiba Current Relay RC803A-HP1.
However, one of the most important roles played by the user manual is to help in solving problems with Toshiba Current Relay RC803A-HP1. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Toshiba Current Relay RC803A-HP1 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
