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Toshiba RC820 Series, Instruction Manual, Page: 2 / 25

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Toshiba RC820 Series Instruction Manual Download Page 2

T O S H I B A

C 0   T     T 

INITIAL 

APPLICATIONS

RATINGS AND 

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PRECAUTIONS 

 APPLICATIONS

INSTALLATION

CIRCUIT CONSTRUCTIONS

 TO SET

 AND 

INSPECTION AND 

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TROUBLE-SHOOTING

INSTALLATION TEST PROCEDURE

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 FAULT TEST FORM

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Summary of Contents for RC820 Series

Page 1: ...UCTION MANUAL RELAY MODELS RC820 HP Y RC820 AP Y AUXILIARY MODULES RC 81A GROUND FAULT RC 81 B PHASE REVERSAL RC 81C GROUND FAULT PHASE REVERSAL TOSHIBA CORPORATION Buy www ValinOnline com Phone 844 385 3099 Email CustomerService valin com ...

Page 2: ...ION _ _ _____ ______________________ CIRCUIT CONSTRUCTIONS _ _ _ ________ IIOM TO SET _ _ _ _ SELIKTION AND ADJUSTEIENTS _ _ _ ______________ INSPECTION AND MAINTEI4ANCE TROUBLE SHOOTING ______________ _________________ INSTALLATION TEST PROCEDURE GROIJND FAULT TEST FORM Page 2 2 2 3 7 I 0 13 16 17 19 20 22 24 l Buy www ValinOnline com Phone 844 385 3099 Email CustomerService valin com ...

Page 3: ...and RCRlC ground fault phase reversal module INITIAL INSPECTION 1 Check that the 2E Relay and or additional module is per ordering specifications 2 Check the 21 Relay and or additional module for damage incurred during shipment breakage loose parts APPLICATIONS The 2 3 Relay and or additional module is used to protect three phase induction motors and other three phase loads not only from ovcrloa d...

Page 4: ... nc 1 Performances of the 2E Relay gl RI 82 _ ___ 1 FE 12 1 Kzi12m Wee phase circuits rated up to 600V AC 50 60 HZ Direct Also applicable to high voltage circuit by cc in q with high voltage CTS Dual functions 2E relay Over load a Single phase protection 7AT mmG 150 of rated at 75 5 1 l 20 40 1 105 125 of current setting 3s40 Sec for starting characteristics at 600 of current setting 3 2 5 10 20 s...

Page 5: ... IRelative hwnidity R C H P 1Y HPlY12 APlY 8 2 0 T HP Y HPZY12 AP2Y 2 VA 0 3 VA phase at rateJ current 1x0 NC SPDT FOIIII C 12OV AC 5 OA Resistive load 12OV AC 3 OA Inductive load pf 0 40 125V IX 0 2A iJR 7ms 250V DC O lA IdR 7ms LED RCP O H PElY Mdnunl R et T y p e RCH20 HP Y12 Man algRemote R e s e t Jr 82G A A u t o Reset T _e _ ___ 1 0 I GOOC 4 5 Q 85 at 20 C _I jl s i 4 Buy www ValinOnline co...

Page 6: ...rating 90 of 2K relay 90 of 2E relay Phase current current setting currentset y reversal Operating Less than 0 58 Less than 0 5s zharacteristics time Grouncl fault 411 s l A current zcr setting Primary Maximum fault current tiround fault time o ls l os l o ls l os settitq htput signal output contacts of basic relay __ _ rrip indication LED manual reset ______ __ 12ik4cnA 12ii 4omA Connected connec...

Page 7: ...racteristics min operating current 85 of current setting I ___ l nl C Ilii Overload operating L characteristics I Single NUT TIPLCS OF LOAD CURRENT MULTIPLES OF LOAD CURRENT STARTING RUNNING CIIARACTCRISTIC CliARAC TEHISTIC Fi g 3 Operating characteristic curve 0 i 6 6 Buy www ValinOnline com Phone 844 385 3099 Email CustomerService valin com ...

Page 8: ...th external cT s When the relay is used in a medium or high voltage circuit an excessive CT secondary burden may cause secondary current waveform distortion ince large waveform distortion may be detected as unbalanced current limit the external CT secondary burden according to the overcurrent constant while referring to Table 3 Table 3 Limit of external CT secondary burden Recommended Secondary Bu...

Page 9: ... sinusoidaly even though the power system voltage may be AC so the 2E Relay and or additional modules are not applicable Three phase AC power supply 2E CT 2E Relay Thyristor 23 DCM DC Motor Fig 2 Example of misapplication of the 2E Relay Buy www ValinOnline com Phone 844 385 3099 Email CustomerService valin com ...

Page 10: ...ay s current setting and the unbalanced current rate Current setting value iOo Current Setting value 125 50 Current setting value 150 I max Max phase cUrrent 0 0 100 200 300 400 500 600 700 800 Max phase current percent of current setting Fig 3 Phase unbalance detecting characteristics 9 Buy www ValinOnline com Phone 844 385 3099 Email CustomerService valin com ...

Page 11: ...Fig 4 The below shown mounting feet and hardware will be shipped together with the relay as standard accessory Do not use a screw locking agent when tightening Mounting Feet AcceSSOry setting Switches Time Setting Trip Indication M 3 5 ScrfwS 5CO 20 Dia 4 Mounting Fig 4 Surface mount type 2E Relay Buy www ValinOnline com Phone 844 385 3099 Email CustomerService valin com ...

Page 12: ... Flush Mounting Kit Parts I Quantity I Flush Mounting Feet I 2 I Flush Cover with Nylatch 1 M4 Screws 4 M4 Spring Washers 4 Mountiny Panel EaO 2 36 kp 4 Nylatch Terminal Conductor j 170 2 75 _jj 1 6 M i n L 3 2 M a x 0 0 6 m i n 2 0 1 2 5 max Fig 5 Flush mount type 2E Relay 47 0 2 66 0 2 8 0 32 Dia 2 Mounting Holes 5 0 2 Dia 4 Mounting Holes Buy www ValinOnline com Phone 844 385 3099 Email Custome...

Page 13: ...y are completed For module installation peel off the side label on the relay to open the holes for connection pins 4 8 0 1 Fin Contacts Dia 2 Kounting Holes i 11 1 1 z 6OC2 36 i P 20 1lsl cl Y8 1 0 59 Indicator Mounting Fig 6A Additional m 2dul e Fig 68 Combination of 2l relay and additional module z 5 Buy www ValinOnline com Phone 844 385 3099 Email CustomerService valin com ...

Page 14: ...elay and or additional module for low voltage induction motor protection see Fig 8 which illustrates the typical wiring connections Applying the 2E Relay for high voltage or low voltage large capacity systems see Fig 9 It is necessary to balance the CT secondary load that is CT secondary wire length Vumber of turns2 Built in CT window l pqqgJ e Nwnker of turns 1 2 PCs5 e T 3 passes Number of turns...

Page 15: ...motor AC 200 240V Terminals l 3 Connections of output contacts NC contact opened when the 2E Relay operated Terminals 8 9 NO contact closed when the 2E Relay operated Terminals 9 10 Connections of Remote reset switch Remote reset Terminals 4 5 Special spec P RC820 tl P CIY I 2 Viiriny lenqth from 2F tn r e s e t SwitLh mu t he 1w s than m i 3 i jy 8 pplicatloll i r low vnlrdg i n d u c t i o n mot...

Page 16: ...ltage A ___ J contaqm t s t a r t ontactor owatl i co11 M 1 High voltage CT secondary circuit wires pass through the windows of the built in CT s High voltage induction ootor Fig 9 Typical application to high voltage induction motor circuit with ground fault protection 15 Buy www ValinOnline com Phone 844 385 3099 Email CustomerService valin com ...

Page 17: ...larger currents or voltages above 6OOV the use of extern J current transformers is required Selection of the suitable model may require some prelimi nary calculations See Current Setting Adjustments to determine if the calculated Dial Setting can be obtained with the selected model given the motor s full load current FLA Model Selection can also be influenced by wire Size limiting the number of tu...

Page 18: ...Current Setting by 0 93 NOTE Select the external CT S ratio so that the current sett ing 8 is as close to 100 as possible Example Ul 5OHP 4GOV 65A Full Load 1 15 S F Across the line start Since the full load falls within the range of the 55 AT 75 150 2E Relay s CT s and no external CT s are required The 8 Dial Setting _ 65 1 100 118 115 or 120 55 Example X2 2OOHP 46OV 240A Full Load 1 15 S F Acros...

Page 19: ...the RC81A or RC81C with the 2E Relay determine the settings with the same manner mentioned above 3 Fault Indication and Reset The LED on the 2E relay is illuminated by any trip condition The optional module s have individual indicators LED s When the 2E Relay detects an overload single phase or phase unbalance condition and the LED indicator lights throw the reset toggle switch to reset the relay ...

Page 20: ...ule is operated under adverse environmental conditions Approx semi annually Items to be inspected 1 Dust accumulation When dust accumulation or contami nation is observed near the current conducting components wipe them clean with a soft dry cloth Do NOT use gasol ine bengine or other organic solvents 2 Loose stress 3 Presel points of the current setting and time setting switches 4 Operation of th...

Page 21: ...ter clarifying the cause take the actions shown in the chart to correct the problem 2 nelay fails to operate I I i l i F I I 4 Check the sequence of Incorrect primary wires Correct it 1 r set current Operates normally Fig 10 Trouble shooting table hen 2E Relay fails to operate i o Buy www ValinOnline com Phone 844 385 3099 Email CustomerService valin com ...

Page 22: ...e phase sequence Check the motor and load to eliminate Abnormal Ch Operates normally See Fig 1 current value Fig 11 Trouble shooting table n 9 3 When 2E Relay operates during motor start up and operating Buy www ValinOnline com Phone 844 385 3099 Email CustomerService valin com ...

Page 23: ...in j 1 When testing the ground fault module keep the main circuit de energized 2 Set the ground current knob at a proper value of IGS ground fault trip point 3 Connect the test wire through the ZCT window as show in Fig 12 4 Apply control power to the 2E and interrupting device 5 Apply 1 25xIGS with the test circuit and interrupt the current when the relay operates 6 Check the operation of the rel...

Page 24: ...rrent limiting 1 2 Connect the sensor and relay as shown in FIG 13 Set the ground current knob at a proper value of IGS ground fault trip point 3 Apply 1 25xIGS with the test circuit and interrupt the current when the relay operates 4 Check the operation of the relay with the test switch on 5 the 2E and check that the LED indicator lights If relay does not operate at the settilm interrul t hc es l...

Page 25: ...T O S H I B A 6F9E0097 Gl P UL T F vo 1 Date Setting Test current Result Not e Buy www ValinOnline com Phone 844 385 3099 Email CustomerService valin com ...

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