NO:2021.04
Standard: IEC/EN 60947-6-1
User
Instructions
NXZ SeriesAutomatic Transfer Switch
Page 1: ...NO 2021 04 Standard IEC EN 60947 6 1 User Instructions NXZ Series Automatic Transfer Switch ...
Page 2: ...mage After installing the product finishing the inspection of load side line and splitting the fire resistance circuit the controller must be set to Manual position and the product must be set to split position Switch the controller to Auto position after line fault is eliminated To avoid dangerous accidents the products should be installed and secured according to the instructions This product is...
Page 3: ...1 NXZ Automatic Transfer Switch Inspection Determine product technical parameters Necessary tools Cross screwdriver Straight screwdriver Outer hexagon Figure 1 Inspection 2m M3 12 M3 M4 60 M4 M5 70 M5 1 1 3 1 3 1 1 M8 100 M8 Product model NXZ 125 NXZ 250 NXZ 630 Note Specification of mounting screw and nut Standard Flash barrier 3P 4P 4 8 9 5 6 1 1 2 2 External signal terminal Type A Type B Wire W...
Page 4: ... switch on position Standby switch on position Manual debugging Power on test Setting state mode Start up mode of generator Move the orange button to the operating position Automatic mode SET AUTO GENERATCR AUTO on on OFF SET ON OFF AUTO MANU I II I II on on OFF SET ON OFF AUTO MANU I II I II on on OFF SET AUTO MANU I II Figure 2 Manual debugging Figure 3 1 Power on test ...
Page 5: ...tallation Size of NXZ 125 630 Unit mm Product model Outline size Installation size NXZ 125 NXZ 250 NXZ 630 245 295 436 130 175 272 220 304 461 30 35 58 4 5 6 9 5 5 8 13 126 175 230 21 29 41 71 99 131 107 5 146 192 21 29 41 229 5 275 400 113 152 240 4 5 6 9 21 5 27 5 43 MANU on on OFF SET ON OFF AUTO MANU I II I II AUTO on on OFF SET OFF AUTO MANU I II I II OFF Figure 3 2 Power on test Figure 4 Out...
Page 6: ...the product nameplate or SCPD fuse with the same breaking capacity 2 For the wiring of the load end of 3P product the N pole is not connected and the wiring of its power line end is same as 4P product During wiring incorrect N pole wiring may result in the burn out of the controller Main circuit conductor Normal power bus Alternative power bus Load bus 4P product wiring diagram Main circuit Normal...
Page 7: ...0A 2 185mm 630A 2 6N m 12N m 5 6 10 30N m M6 16 M8 20 M12 35 NXZ 125 NXZ 250 NXZ 630 1 1 1 1 2 2 Wire connection Unit mm Product model Cable specifications Number of conductors allowed to be clamped into the terminal Product model Specification of binding screw Torque Wrench 05 Figure 6 Wire connection Tabla 3 Sectional area width and number of copper wire ...
Page 8: ...ral Closing signal Closing signal The user should connect corresponding terminal as needed Passive input Passive output Passive contact Note The dash line refers to the internal circuit of controller Auxiliary power supply Fire control signal Control of power generation start up Auxiliary power Passive Input Passive Output Fire Linkage Control Split interface Generator control II Power indicator P...
Page 9: ...al power supply To the remote power of generator Connected to upper computer RS485 Terminals 401 and 402 can only be connected to passive signal If the fire control signal is active signal the normally open contact of relay must be connected to the controller after switching through the relay Terminals 403 and 404 are connected after the duplexing of fire control After the fire control signal bein...
Page 10: ...e state 2 Terminals 401 and 402 of type A and type B controllers can be connected with passive closing signal only to achieve fire control linkage If they are directly connected to any active signal the controller will be burnt out The product is in the state Move the orange button the manual position to Pull out the limiting piece and lock it 5 Installation of Isolation Padlock Figure 10 Installa...
Page 11: ...c Transfer Switch 54 109 127 8 29 6 Split type Display Module Outline size 127 111 112 55 56 2Xφ 3 5 Installation cabinet opening size mm Figure 11 Split type display module Figure 12 Installation cabinet opening size ...
Page 12: ...witch 10 3 2 0 8N m ST2 9 4 2 nuts 2 screws Note The nuts are installed by fastening screws on the back 0 9N m M3 5 6 7 1 2 2 Split cabinet surface installation of display module Figure 13 Split installation of display module ...
Page 13: ...ameter setting menu of controller Select button of automatic manual switching mode It is used to select the automatic manual switching mode in normal use and to save and exit in the setting state Off button In the manual control mode if any of the two circuits of power supply is normal press this button to switch to the off position while in the setting state this button is used to set parameter d...
Page 14: ...pply overvoltage press to increase and to decrease For setting of return delay press to increase and to decrease For setting of the delay of generator stop press to increase and to decrease For setting of the delay of generator start up press to increase and to decrease For setting of switching mode press and keys to change the switching mode if the last digital is 0 it refers to grid grid automat...
Page 15: ...ter settings for display module and communication function default as follows Setting of undervoltage switching value Default to 187V user settable 160V 200V Setting of overvoltage switching value Default to 263V user settable 240V 290V Setting of switching delay Default to 5s user settable 0s 300s Setting of return delay Default to 5s user settable 0s 300s Setting of generator start up delay Defa...
Page 16: ...p of normal power supply Power up of normal power supply Power up of normal power supply T4 Connection of normal power supply Connection of normal power supply Connection of normal power supply Generator shutdown Flow Chart of Automatic Charge and Automatic Recovery Grid Grid of Controller Flow Chart of Automatic Charge and No Automatic Recovery Grid Grid of Controller Flow Chart of Automatic Char...
Page 17: ...anually or automatically switched to the failed circuit of power supply In automatic state when the normal power supply recovers from the fault to the set undervoltage switching value the product does not switch automatically After the signal is removed the user needs to press any key to exit the fire control linkage state and resume the normal state of operation The controller will not switch on ...
Page 18: ...cted to the zero line or the N pole of the product is connected to the live wire by mistake Conduct wiring correctly as per the instructions main circuit Incorrect connection to the live wire may burn out the controller 10 Warranty Under the normal storage and transportation conditions and on the premise that the product packaging or product itself is in good condition the warranty period of the p...
Page 19: ...QC PASS Test date Please see the packing ZHEJIANG CHINT ELECTRICS CO LTD NXZ Automatic Transfer Switch IEC EN 60947 6 1 PD1 Check 15 17 NXZ Automatic Transfer Switch ...
Page 20: ...atic Transfer Switch User Instructions Zhejiang Chint Electrics Co Ltd Add No 1 CHINT Road CHINT Industrial Zone North Baixiang Yueqing Zhejiang 325603 P R China E mail global sales chint com Website http en chint com ...
