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Joslyn 1456-85-L, Руководство по установке и обслуживанию

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MAG/MNL145685L(NC)  

 

 

 

 

S

URGITRON

  

I

 

AC SURGE PROTECTOR

 

 

Model 1456-85-L 

 

480Y/277 Vac, 3-PHASE, 4-WIRE, GROUNDED WYE 

INSTALLATION AND MAINTENANCE MANUAL  

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 
 

 

 

  

5900 Eastport Blvd., Bldg. V 

Richmond, VA 23231-4453 

Telephone (804) 236-3300 

Facsimile (804) 236-4040 

Excellence in Systems Protection 

 
 

Содержание 1456-85-L

Страница 1: ...URGE PROTECTOR Model 1456 85 L 480Y 277 Vac 3 PHASE 4 WIRE GROUNDED WYE INSTALLATION AND MAINTENANCE MANUAL 5900 Eastport Blvd Bldg V Richmond VA 23231 4453 Telephone 804 236 3300 Facsimile 804 236 4040 Excellence in Systems Protection ...

Страница 2: ...MAG MNL145685L NC TABLE OF CONTENTS I SPECIFICATIONS 3 II INSTALLATION 3 III THEORY OF OPERATION 4 IV MAINTENANCE 5 ...

Страница 3: ...ose to the service entrance cabinet as possible It should be short nippled directly to the service cabinet and located so that the wires used to connect to the bus are as short as possible The inductance of the wiring about 1 microhenry per 3 feet results in every 4 inches adding about 100 volts to the suppression voltage of the protector on a typical 10 kA lightning surge If the wire length excee...

Страница 4: ...es itself to normal condition after termination of the surge condition No power follow occurs and the disturbance to the line voltage is minimal Each phase of the protector has four protector modules two connected L N two connected L G and two monitoring circuits Refer to connection diagram of Figure 2 Each protector module consists of several Metal Oxide Varistors MOV connected in parallel Each M...

Страница 5: ...ays are defective 6 The protector is defective If one or more lights are off 1 Check the system voltage 2 Replace the bulb if the fuse is intact and the system voltage is on If the system voltage is on and the bulb has been replaced and is still not on or a remote alarm signal is obtained 1 Measure voltage between monitoring wire terminal located on side of relay bracket of corresponding phase A B...

Страница 6: ...erse leads and test again as above The following DC Varistor voltage values are considered acceptable Factory specification for new Protector 420 to 520 Vdc Protector in Use 410 to 530 Vdc 2 To replace a Protector Module proceed as follows 1 Disconnect power 2 Disconnect monitoring lead of module to be removed from terminal block 3 Remove 10 32 Screw from protector module bracket and neutral or gr...

Страница 7: ...MAG MNL145685L NC 7 Figure 1 Outline of Supplied NEMA 4 Enclosure ...

Страница 8: ...MAG MNL145685L NC 8 Figure 2 Connection Diagram ...

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