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41-579.11B Type TD-5 Class 1E Time Delay Relay

14

Figure 5. Internal Schematic of TD-5 Class 1E Relay in FT-11 Case

Sub 1*
9683A64

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Summary of Contents for TD-5

Page 1: ...pecially designed and tested to establish its suitability for Class 1E applications in accordance with the ABB Relay Division program for Class 1E Qualification Testing as detailed in the ABB publication STR 1 Class 1E is the safety classification of the electric equipment and systems in nuclear power generating stations that are essential to emergency shutdown of the reactor containment isolation...

Page 2: ...41 579 11B Type TD 5 Class 1E Time Delay Relay 2 Figure 1 TD 5 Relay Front and Rear Views Out of Case ...

Page 3: ... 1955649 ALL 24 32 RESISTOR 45 OHM 40W 5 22 5 OHM TAP 184A064H03 TR ALL ALL RELAY MINIATURE POWER RELAY 6V 9676A51H01 VR1 VR4 ALL ALL VARISTOR V320LA40B 3509A31H22 0 05 1 ALL RHEOSTAT 40K 2W 10 9676A50H02 0 05 0 4 ALL RHEOSTAT 20K 2W 10 9676A50H01 1 5 30 0 2 4 ALL RHEOSTAT 100K 2W 10 9676A50H03 48 125 ZENER 1N2986B 10W 24V 629A798H03 250 ZENER 1N2999B 10W 56V 629A798H04 24 32 ZENER 1N2977B 10W 13V...

Page 4: ...onality is achieved when P is an adjustable resistor For simplicity P will be referred to as a potentiometer throughout this IL Reference to the potentiometer s brush is equivalent to the adjustable terminal on the adjustable resistor 2 4 PRINTED CIRCUIT BOARD The printed circuit board Timer Module assembly con tains the following components see Figure 2 Diode D1 to protect the static components i...

Page 5: ...Type TD 5 Class 1E Time Delay Relay 41 579 11B 5 Figure 2 Printed Circuit Board Component Location Sub 1 9676A77 ...

Page 6: ... conclusion of the time delay Two sets of transfer contacts are provided to give a flexible trip circuit arrangement 2 6 TX RELAY Construction P C board mounted miniature power relay Operation When used see Figure 6 the TX relay is energized by the application of dc voltage to the relay Because of its slow dropout characteristic a contact of the TX relay is connected externally around the contact ...

Page 7: ...icator lamp is used when the timer is used and with a fault detector to trip a breaker the breaker a contact must be connected between terminal 8 of the relay and negative The rate at which the capacitor charges is determined by the rheostat T setting The charging rate is not a linear function of the rheostat setting since RP gives a parallel resistive path This has the effect of expanding the sca...

Page 8: ...tings above 0 2 seconds this accuracy will be 2 3 4 2 Consecutive Timings Incomplete capacitor discharge will cause changes in time delay These changes are a function of discharge rate Timing accuracy is shown per Tables 1 and 2 24 VOLTS DC 32 VOLTS DC 48 VOLTS DC 125 VOLTS DC 250 VOLTSDC 0 0 0 0 0 500 mA 450 mA 240 mA 200 mA 100 mA for time delay ranges 0 05 0 4 and 0 05 1 0 seconds 115 mA for ti...

Page 9: ...CONTACTS 125 VDC 250 VDC TRIPPING DUTY 30A 30A CONTINUOUS 5A 5A BREAK 0 3A 0 1A 3 5 INDICATING CONTACTOR SWITCH ICS The seal in contacts of the ICS will safely carry 30 ampers at 250 volts dc long enough to trip a circuit breaker TRIP CIRCUIT CONSTANTS INDICATING CONTACTOR SWITCH TYPICAL VALUES 0 2 AMP RATING 8 5 OHMS DC RESISTANCE 1 0 AMP RATING 0 37 OHMS DC RESISTANCE 2 0 AMP RATING 0 10 OHMS DC...

Page 10: ...CS No setting is required on the ICS 5 0 INSTALLATION The relays should be mounted on switchboard panels or their equivalent in a location free from dirt moisture excessive vibration and heat For semi flush mounting install the relay vertically by means of the four mounting holes on the case flange The mounting screws may also be utilized for grounding the relay External toothed washers are provid...

Page 11: ...ecalibration is necessary whenever any of these components are changed 6 3 TROUBLE SHOOTING PROCEDURE Use the following procedure to locate the source of trouble if the TD 5 is not operating correctly 1 Inspect all wires and connections paying particular attention to telephone relay and printed circuit board terminals 2 Check the reference voltage circuit This is done by measuring the dc voltage a...

Page 12: ...s See section 3 4 Accuracy for discussion of this Initially adjust ICS unit on the pedestal so that armature fingers do not touch the yoke in the rest position viewed from top of swtich between cover and frame This can be done by loosening the mounting screw in the molded pedestal and moving the ICS in the downward position Contact Wipe Adjust the stationary contacts so that both stationary contac...

Page 13: ...t should pickup at 98 of rating and not pickup at 85 of rating If necessary the cover leaf springs may be adjusted 8 0 RENEWAL PARTS Repair work can be done most satisfactorily at the factory However interchangeable parts can be furnished to customerswhoareequippedfordoingrepairwork When ordering parts always give the complete nameplate data of the relay If the pickup is low the front cover must b...

Page 14: ...41 579 11B Type TD 5 Class 1E Time Delay Relay 14 Figure 5 Internal Schematic of TD 5 Class 1E Relay in FT 11 Case Sub 1 9683A64 ...

Page 15: ...Type TD 5 Class 1E Time Delay Relay 41 579 11B 15 Figure 6 Internal Schematic of TD 5 Class 1E Relay in FT 11 Case with TX Relay Sub 1 9683A65 ...

Page 16: ... Coral Springs FL 33065 TEL 954 752 6700 FAX 954 345 5329 visit our website at www abb com substationautomation Sub 4 3519A65 Figure 7 Outline and Drilling Plan for Type TD 5 Class 1E Relays in FT 11 Case 41 579 11 Type TD 5 Class 1ETime Delay Relay ...

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