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CHINT NA8G Manual
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CHINT NA8G Manual

Air circuit breaker
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Air Circuit Breake
Leading every step, reliable new height

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Summary of Contents for CHINT NA8G

  • Page 1 Air Circuit Breake Leading every step, reliable new height...
  • Page 4 Air Circuit Breaker NA8G Page P-001 Page P-039...
  • Page 5 Rated current: 1.1 Application scope With rated current from 200A to 6300A, and rated service voltage of AC 415V or 690V, NA8G series air circuit breaker is Frame size mainly used in the distribution network with the circuit of AC...
  • Page 6 NA8G P-002 Air Circuit Breaker 3. Product structure Body structure Secondary connecting part Shunt release Closing electromagnet Energy storage handle Under voltage release Breaking button Making button Energy storage & release indicator Breaking/making indicator Operating mechanism Motor-driven energy storage mechanism...
  • Page 7 NA8G P-003 Air Circuit Breaker Breaker on and energy storage over Breaker on and no energy storage Breaker off and energy storage over Breaker off and no energy storage Press Press Press Press Press Press Press Press Energy Energy Energy...
  • Page 8 NA8G P-004 Air Circuit Breaker Connected Connected Test Test Disconnected Disconnected Connected: both main circuit and secondary circuit are connected Test: the main circuit is disconnected, the safety separator works well, and the secondary circuit is connected. Connected Test Disconnected...
  • Page 9 NA8G P-005 Air Circuit Breaker 4. Main technical parameters 4.1 Main technical parameters 1600 3200 6300 Shell grade rated current Inm (A) 4000 400,630,800, 1600,2000, Rated current In (A) 2500,3200,4000 4000,5000 6300 1000,1250,1600 2500,3200 Nominal insulation voltage Ui (V) 1000...
  • Page 10 NA8G P-006 Air Circuit Breaker 4.2.2 Capacity-reducing at different altitudes When the altitude is higher than 2000m, there will appear changes in insulation property, cooling performance, pressure,and the performance can be modified in reference to the following table. Altitude(m) 2000...
  • Page 11 NA8G P-007 Air Circuit Breaker 5. Dimensions and connection NA8G-1600 (In=400A ~1250A) Draw-out type (Only horizontal connection is provided by the factory, vertical one has to be made by users themselves). 345(Connected position) 391(Disconnected position) Horizontal connection 282(3P) Phases barrier...
  • Page 12 NA8G P-008 Air Circuit Breaker NA8G-1600 (400A~1250A) Fixed type (Only horizontal connection is provided by the factory, vertical one to has be made by users themselves). Phases barrier (to be ordered separately) 237(3P) 307(4P) 254(3P) Horizontal connection 324(4P) Phases barrier...
  • Page 13 NA8G P-009 Air Circuit Breaker NA8G-1600 Draw-out type NA8G-1600 Fixed type Size of the hole to be drilled on the panel Size of the hole to be drilled on the panel 10-Φ5 8-Φ5 Breaker mounting panel Breaker mounting panel 118.5...
  • Page 14 Φ11 Datum line 445(Connected position) 492(Disconnected position) Note: If users want to change the vertical connection into horizontal connection, they only have to turn the busbar by 90°. NA8G-3200 Draw-out type; Front connection 12-Φ13 Datum line In(A) 1600, 2000, 2500...
  • Page 15 Φ11 Datum line 445(Connected position) 492(Disconnected position) NA8G-3200(In= 3200A) Draw-out type (Vertical connection has to be made by users themselves) Φ11 Datum line 445(Connected position) 492(Disconnected position) Note: If users want to change the horizontal connection into vertical connection, it is necessary to replace the upper and lower busbars for the N and B phases with the same one as the A and C phases.
  • Page 16 NA8G P-012 Air Circuit Breaker NA8G-3200 Fixed type, size of the hole to be drilled on the panel Φ 4× 200(3P) 8×Φ6 315(4P) Installation panel Datum line Datum line NA8G-3200 Fixed type (Only horizontal connection is provided by the factory Ferrous material 12-Φ13...
  • Page 17 NA8G P-013 Air Circuit Breaker NA8G-4000 Draw-out type, size of the hole to be drilled on the panel 217.5 217.5(3P) 332.5(4P) datu m li ne 1 11×17 φ11 φ14 φ14 11×17 10× Φ 162.5 162.5(3P) datu m li ne 1 277.5(4P)
  • Page 18 NA8G P-014 Air Circuit Breaker NA8G-4000 Draw-out type, size of the hole to be drilled on the panel Φ11 datu m li ne 1 In(A) 2500 3200~4000 NA8G-4000(In=3200A~4000A) Draw-out type (only horizontal connection is provided by the factory) Φ11 datu m li ne 1...
  • Page 19 NA8G P-015 Air Circuit Breaker NA8G-4000 Fixed type , outline dimension 10.5 200(3P) 315(4P) datum line 1 NA8G-4000 Fixed type ,size of the hole to be drilled on the panel 4×Φ14 400(3P) 8×Φ6 515(4P) 432.5(3P) 547.5(4P) datum line 1 NA8G-4000(In=2500A) Fixed type (only horizontal connection is provided by the factory) φ11...
  • Page 20 1 Note: If users want to change the horizontal connection into vertical connection,they only have to change the busbar of N、B phases to A、C phases. NA8G-4000(In=3200A~4000A) Fixed type (vertical connection has to be made by users themselves) Φ11 datum line 1 Note: If users want to change the horizontal connection into vertical connection,they only have to change the busbar of N、B phases to A、C phases.
  • Page 21 NA8G P-017 Air Circuit Breaker NA8G-6300 In=(4000A~5000A) Draw-out type Size of the hole to be drilled on the panel 710.5(4P) 595.5(3P) 217.5 Datum line 1 φ14 2×11×17 Φ11 162.5 703(3P) 10×Φ6 Datum line 1 Datum line 1 818(4P) Size of the hole to be drilled on the panel...
  • Page 22 Datum line 1 Note: If users want to change the horizontal connection into vertical connection, they only have to additionally install vertical busbars. NA8G-6300(In=6300A) Draw-out type (Vertical connection has to be made by users themselves) Datum line 1 Φ11 Note: If users want to change the horizontal connection into vertical connection, they only have to additionally install vertical busbars.
  • Page 23 NA8G P-019 Air Circuit Breaker 6. Secondary circuit wiring Connection diagram for the secondary circuit of NA8G-1600 with standard type intelligent controller Fault indicator A B C 42 44 Breaker body Q/QY Intelligent controller Control power L2(N) DC24V Power Energy...
  • Page 24 NA8G P-020 Air Circuit Breaker Connection diagram for the secondary circuit of NA8G-3200 to 6300 with standard type intelligent controller Fault indicator A B C 42 44 Breaker body Q/QY Intelligent controller Control power L2(N) 3200 and 6300 frame controller power supply: AC230V and AC400V...
  • Page 25 NA8G P-021 Air Circuit Breaker Connection diagram for the secondary circuit of NA8G-1600 with multifunctional type intelligent controller Device Net Profibus-DP PSU-1 power module ST-DN ST-DP module module 16 17 A B C D12 D13 DC24V RU-1 relay module Fault indicator...
  • Page 26 NA8G P-022 Air Circuit Breaker Connection diagram for the secondary circuit of NA8G-3200 and 6300 with multifuctional type itelligent controller. Device Net Profibus-DP PSU-1 power module ST-DN ST-DP module module 16 17 A B C D12 D13 DC24V RU-1 relay module...
  • Page 27 NA8G P-023 Air Circuit Breaker 7. Intelligent controller and protective characteristics 7.1 User interface of the standard type controller LED window LED window capable of showing the current for each phase, various setting parameters, rated current, fault current, tripping time, and the like “...
  • Page 28 NA8G P-024 Air Circuit Breaker 7.2 Default interface and operation method for the standard type controller The default interface for the standard type controller is described as follows: (The current for each phase to be selected by pressing "→") Press "MENU"key once to go to the status for parameter query as follows, and then press"→"to go to query the setting parameter of quadruple overcurrent protection.
  • Page 29 NA8G P-025 Air Circuit Breaker 7.3 User interface of the multifunctional controller Brand "CHINT" Brand LED window LCD window capable of showing the current for each phase, various setting parameters, rated current, fault current, tripping time and the like SET key Switch to the set default menu (left arrow key, when it is necessary to move leftwards or rightwards for the set interface).
  • Page 30 NA8G P-026 Air Circuit Breaker Default interface for the multifunctional controller 7.4 Default interface and menu structure for the multifunctional controller 1002 A A B C The multifunctional controller provides 4 title menus (measurement menu, parameter setup menu, protection parameter setup menu, and history record and maintenance menu) and 1 default menu.
  • Page 31 NA8G P-027 Air Circuit Breaker Primary menu Secondary menu Third menu Fourth menu Fifth menu P= 660kW P, Q, S Q= 0kvar S= 660kVA -1.00 Perceptual Power factor PFa= 1.00 PFb= 1.00 PFc= 1.00 Instantaneous value Pa= 220kW Pa, Qa, Sa...
  • Page 32 NA8G P-028 Air Circuit Breaker Primary menu Secondary menu Third menu Fourth menu Fifth menu Uab= 0.0% Ubc= 0.0% Uca= 0.0% U(%) Uan= 0.0% Ubn= 0.0% Ucn= 0.0% Ia FFT THD=0.0% 0.0% Ia(3, 5, 7...31) 3 5 7 9 11...31) Ib FFT THD=0.0%...
  • Page 33 Number of operations e.g.: 219(ACK key, reset) e.g.: 120 Total wear Contact wear e.g.: 20(ACK key, reset) lContact wear Product information Zhejiang CHINT electrics co., LTD Under voltage tripping T=0.20s Umax=0V 11:24:59 e.g.: 6/17 1 Under voltage tripping Tripping record F=0.00Hz...
  • Page 34 NA8G P-030 Air Circuit Breaker Primary menu Secondary menu Third menu Fourth menu Fifth menu A phase short-circuit definite-time limit T= 0.4s I= 4300A 15:28:25 e.g. Tripping record 8 (for) short-circuit definite-time limit 5/30 2004/05/30 Ia= 4300A Ib= 4200A Ic= 4000A...
  • Page 35 NA8G P-031 Air Circuit Breaker Heat capacity measurement Multifunction type (H type) Standard type (M type) P Function H Function 1.Voltage measurement; 1.Voltage measurement; 2.Voltage unbalance measurement; 2.Voltage unbalance measurement; 3.Frequency measurement; 3.Frequency measurement; 4.Phase sequence measurement; 4.Phase sequence measurement;...
  • Page 36 NA8G P-032 Air Circuit Breaker 7.6.1 Long time-delay overcurrent protection characteristic Rated current range [IR] Operating time [tR(s)] Time error Error Current [I] ≤1.05I No actuation within 2h >1.30I ＜1h and then actuate (0.4~1)In 1.5IR ±10% 2.0IR ±15% 6.0IR Explanation for parameter setting Current of long time-delay overcurrent protection: I =(0.4-...
  • Page 37 NA8G P-033 Air Circuit Breaker 7.6.3 Short-circuit instantaneous overcurrent protection Rated current range [Ii] Error Operating Characteristics Line current [I] ≤0.85Ii no-action (2~15)In ±15% +OFF(Power off) ＞1.15Ii action Explanation for parameter setting Current of short-circuit instantaneous over current protection: Ii=[2-3-4-6-8-10-12-15-OFF]×In, optional.
  • Page 38 NA8G P-034 Air Circuit Breaker 7.7 Explanation for auxiliary functions The controller still has the function of fault memory after reset a. Explanation for test functions or de-energized to keep a latest historical event for post When onsite adjustment, periodical inspection or overhaul is analysis.
  • Page 39 NA8G P-035 Air Circuit Breaker 8.4 Motor-driven energy storage mechanism The functions of motor-driven energy storage and automatic energy re-storage after the breaker comes on are available to ensure that the breaker can come on immediately after it gets disconnected.Operating characteristic:...
  • Page 40 NA8G P-036 Air Circuit Breaker 9. Installation 9.1 Following items to be checked before installation Check the Listed below are the problems which users may encounter label plate on the breaker panel to see if it is conform to the during installation, adjustment, and operation of the breaker, specifications of the ordered goods.
  • Page 41 NA8G P-037 Air Circuit Breaker Technical problems Possible causes 1 There may be short circuit current when the matter is switched on, and in this case you shall find and shoot the trouble 2 Check to see if there is any overload current in the circuit,...
  • Page 42 NA8G Air Circuit Breaker P-038 11. Ordering specification User Order amount Order date Type and size □NA8G-1600 □NA8G-3200 □NA8G-4000 □NA8G-6300 Rated current □ 4000 □ 5000 □ □ □ □1600 □ 2000 □ 2500 □ 3200 □ 4000 □ 6300(don’t have 4P) (In)A □...
  • Page 43 P-039 Air Circuit Breaker NA1-1000X 200A to 1000A NA1-2000X,NA1-2000XN，NA1-2000XH 630A to 2000A Summary 5 basic frame sizes For your various requirements, the Air Circuit Breaker NA1 includes 5 basic frame sizes as followed. NA1-3200X,NA1-3200XN,NA1-4000X 2000A to 4000A NA1-6300X,NA1-6300XN 4000A to 6300A...
  • Page 44 Air Circuit Breaker P-040 1. General 2.6 Type designation NA1 - □□-□□ / □-□-□-□-□ 1.1 Application scope Voltage of secondary circuit NA1 series air circuit breaker is suitable for the circuit of AC AC220V, AC380V, 50Hz/60Hz with rated service voltage 400V, 690V and rated AC230V, AC400V service current up to 6300A.
  • Page 45 P-041 Air Circuit Breaker...
  • Page 46 Air Circuit Breaker P-042 NA1 Air Circuit Breaker Drawout type Fixed type Intelligent controller Operating mechanism Auxiliary contact Locking-device Arcing chamber Secondary wiring terminal Wire-cable mechanical interlock Connecting-rod type mechanical interlock Shunt release Closing electromagnet Under-voltage release Motor-driven energy-storage mechanism Rotary handle Mounting plate...
  • Page 47 P-043 Air Circuit Breaker 3. Structure Drawer seat Body Drawout type breaker/switch-disconnector Mounting plate Mounting plate for the Mounting plate fixed type breaker/switch-disconnector Secondary wiring terminal Fault-breaking indicator Under-voltage release reset button Making button Energy storage & Breaking button Shunt release release indicator Breaking/making Closing electromagnet...
  • Page 48 Air Circuit Breaker P-044 4. Main technical parameter Type NA1-1000X AC400V Rated ultimate short circuit breaking capacity (Icu) AC690V AC400V Rated service short circuit breaking capacity Ics) AC690V AC400V Rated short-time withstand current (Icw.1s) AC690V Rated current In (A) 1000 Number of poles 3, 4 Rated voltage Ue (V)
  • Page 49 P-045 Air Circuit Breaker Type NA1-2000X NA1-2000XN NA1-2000XH AC400V Rated ultimate short circuit breaking capacity (Icu) AC415V AC690V AC400V Rated service short circuit breaking capacity (Ics) AC415V AC690V AC400V Rated short-time withstand (Icw.1s) AC415V AC690V AC400V Rated short-time withstand (Icw.3s) AC415V Rated current In (A)
  • Page 50 Air Circuit Breaker P-046 Type NA1-3200X NA1-3200XN NA1-4000X AC400V — Rated ultimate short circuit breaking capacity (Icu) AC415V AC690V AC400V — Rated service short circuit breaking capacity (Ics) AC415V AC690V AC400V — Rated short-time withstand (Icw.1s) AC415V AC690V — AC400V Rated short-time withstand (Icw.3s) —...
  • Page 51 P-047 Air Circuit Breaker Type NA1-6300X NA1-6300XN AC400V Rated ultimate short circuit breaking capacity (Icu) AC415V AC690V AC400V Rated service short circuit breaking capacity (Ics) AC415V AC690V AC400V Rated short-time withstand (Icw.1s) AC415V AC690V AC400V Rated short-time withstand (Icw.3s) AC415V rated current In (A) 4000...
  • Page 52 Air Circuit Breaker P-048 5. Dimensions and connection NA1-1000X Drawout-type Boring dimension of door case 8×Φ4 Installation panel Disconnected Installation hole on right side position Connected position n×Φ13 200,400A NA1-1000 n×Φ10.5 630,800, 1000A In(A) A(mm) n(3P/4P) H(mm) 200, 400 30.5 2×Φ9 2-11.5×9 800, 1000...
  • Page 53 P-049 Air Circuit Breaker NA1-2000X/NA1-2000XN/NA1-2000XH Drawout-type 45(Disconnected position) 448(4P) 8×Φ13 353(3P) N pole Right & outer side of insulation panel Right & outer side of breaker 92.5 horizontal connection(Default Configuration) 16×Φ13 N pole Right & outer side of insulation panel 202.5 405(3P) 92.5...
  • Page 54 Air Circuit Breaker P-050 NA1-2000X/NA1-2000XN/NA1-2000XH Drawout-type, horizontal, rear connection 448(4P) 45(Disconnected position) 353(3P) 202.5 405(3P) 500(4P) a mm In A 800~1600 2000 Φ11 2×11×17 Right & outer side of insulation panel Φ14 Installation panel N pole 8×Φ13 11xΦ4 Right & outer side of breaker Right &...
  • Page 55 P-051 Air Circuit Breaker NA1-3200 /NA1-3200 N Drawout-type ×Φ N Pole Right & outer side of 528(4P) 45(Disconnected position) insulation panel 413(3P) Right & outer side of breaker 92.5 horizontal connection(Default Configuration) ×Φ Right & outer side of 232.5 insulation panel 465(3P) Right &...
  • Page 56 Air Circuit Breaker P-052 NA1-3200 /NA1-3200 N Drawout-type, horizontal, rear connection 528(4P) 45(Disconnected position) 413(3P) 232.5 465(3P) 580(4P) In A a mm 2000 2500 3200 Φ11 2×11×17 Φ14 N pole Right & outer side of 202.5 ×Φ insulation panel Installation panel 232.5 Right &...
  • Page 57 P-053 Air Circuit Breaker NA1-4000X Fixed-type (3P) Zero arcing covering ferreous material 12 Φ13 × 189.5 189.5 Base point 4 Φ12 × Horizontal 69.5 4 Φ12 × 8 Φ4 × 202.5 Installation panel Installation hole on Installation hole on Right & outer side of breaker Right &...
  • Page 58 Air Circuit Breaker P-054 NA1-6300X/NA1-6300XN (In=4000A,5000A) Drawout-type 903(4P) 45(Disconnected position) 798(3P) 232.5 843(3P) 958(4P) Right & outer side of insulation panel N Pole Φ11 28× 15 Φ 2×11×17 Φ14 202.5 11 Φ4 × Right & outer side of Installation panel breaker 232.5 182.5...
  • Page 59 P-055 Air Circuit Breaker NA1-6300X/NA1-6300XN (In=6300A) Drawout-type (3P) 45(Disconnected position) 232.5 Φ11 Right & outer side of insulation panel 2×11×17 Right & outer side of Φ14 breaker 316.5 323.5 202.5 11 Φ4 × Installation panel 232.5 Right & outer side of breaker Right &...
  • Page 60 Air Circuit Breaker P-056 6. Secondary circuit wiring 6.1 NA1-1000X Standard type, type (M/3M) Motor-driven Emergency Motor-driven Motor-driven Auxiliary contact Auxiliary contact Intelligent controller Main circuit energy-storage break break make Intelligent controller Power of control circuit HL1: Failure indicator 8 ,9 : Making indicator (capacity AC400V,1A) HL2: Close indicator onnected to the main circuit) 27 ,28 : Under-voltage release(C...
  • Page 61 P-057 Air Circuit Breaker Communication type, type (H/3H) Emergenay Motor-driven Motor-driven Intelligent controller Auxiliary switch Main circuit break break make Profibus-DP PSU-1 AC 220V ST-DP DC 24V Device Fault indicator DI0 D 1 I D 2 I D 3 I D 4 I DC24V Green SB1 SB2...
  • Page 62 Air Circuit Breaker P-058 Six pairs change-over contacts tandard type (M/3M) Main Auxiliary Emergency Motor-driven Motor-driven Motor-driven Auxiliary contact Intelligent controller break circuit break make energy-storage contact Power of Intelligent controller control circuit HL1: Failure indicator 8 ,9 : Making indicator (capacity AC400V,1A) HL2: Close indicator 12 ~26 : Auxiliary contact(auxiliary HL3: Energy storage indicator...
  • Page 63 P-059 Air Circuit Breaker 6.2 NA1-2000X~6300X The secondary circuit wiring for NA1-2000X~6300X with standard type (M) intelligent controller and instantaneous under-voltage release Emergency Motor-driven Motor-driven Auxiliary contact Main circuit Over-current release break make break Failure Energy storage 11 13 15 17 19 21 23 25 27 31 33 35 48 50...
  • Page 64 Air Circuit Breaker P-060 The secondary circuit wiring for NA1-2000X~6300X with type (3M) intelligent controller and instantaneous under-voltage release Highest-voltage of AC400V to the incoming-line side PE Un U1 U2 U3 Transformer connected 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 48 50...
  • Page 65 P-061 Air Circuit Breaker The secondary circuit wiring for NA1-2000X~6300X with type (3H) intelligent controller and instantaneous under-voltage release To TO3 busbar PSU-1 AC 220V Profibus DC 24V ST-DP D+ D- DI0 D 1 I D 2 I D 3 I D 4 I Special connecting wire DC24V Highest-voltage of AC400V...
  • Page 66 Air Circuit Breaker P-062 The secondary circuit wiring for NA1-2000X~6300X with standard type (M) intelligent controller and time-delay under-voltage release Motor Main Motor Motor Under-voltage Emergency driven Auxiliary switch Over-current release time-delay driven driven circuit disconnection energy release break close storage Energy storage...
  • Page 67 P-063 Air Circuit Breaker The secondary circuit wiring for NA1-2000X~6300X with type (3M) intelligent controller and time-delay under-voltage release Highest-voltage of AC 400V To the incoming-line side PE Un U1 U2 U3 Transformer Under-voltage connected time-delay controller 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 42 44...
  • Page 68 Air Circuit Breaker P-064 The secondary circuit wiring for NA1-2000X~6300X with type (3H) intelligent controller and time-delay under-voltage release To TO3 busbar AC 220V PSU-1 Profibus DC 24V ST-DP D+ D- D 1 I D 2 I D 3 I D 4 I DC24V Special connecting wire RU-1...
  • Page 69 P-065 Air Circuit Breaker 7. Installation 7.1 Installation When the guide rod points to separated position and handle 7.1.1 Unload the breaker from the soleplate of package. can't be rotated any longer, pull out the handle and firmly If it is drawout type, firstly pull out the handle under grasp the aluminum handle on drawer-base, pull out the the drawer-base of breaker, and plug it into the hole breaker body and remove it form the base, then move the...
  • Page 70 Air Circuit Breaker P-066 Mounting with vertical brackets Mounting on rails 7.1.5 Partitions A:non magnetic material Sufficient openings must be provided in partitions to ensure good air circulation around the circuit breaker; Any partition between upstream and downstream connections of the device must be made of nonmagnetic material. For high-currents, of 2500 A and upwards, the metal supports or barriers in the immediate vicinity of a conductor ;Metal barriers through which a conductor passes must not form...
  • Page 71 P-067 Air Circuit Breaker 7.1.7 Main circuit adopts cable connection Users should not apply too strong mechanical strength on the terminals of Air Circuit Breaker. Extend the bus-bar of circuit breaker with connecting bus-bar, position the wiring piece of cable before inserting bolts; the cable should be fixed on the frame of distributing cabinet firmly.
  • Page 72 Air Circuit Breaker P-068 Connected position Test position Drawout position Disconnected position 1.Both main circuit and control 1.The main circuit is disconnected, Neither the main circuit Main body is out circuit are connected. and the control circuit is connected. nor the control circuit is connected. of the drawer seat.
  • Page 73 P-069 Air Circuit Breaker 8. Recommendation for user's connecting bus-bar Inm(A) NA1-2000X/NA1-2000XN/NA1-2000XH NA1-3200X/NA1-3200XN NA1-1000X NA1-4000X NA1-6300X/NA1-6300XN In(A) 1000 1000 1250 1600 2000 2000 2500 3200 4000/3P 4000/4P 4000 5000 6300 Thickness(mm) Width(mm) Busbar Number Note: the specifications in the table is obtained as the ambient temperature of air circuit breaker is 40℃, with open installation; this is in compliance with the specification of copper busbars adopted under the heating conditions regulated in IEC/EN60947-2.
  • Page 74 Air Circuit Breaker P-070 Note: The ACB is to calibrated at 40℃, special application please refer to the table above and the curve below. 4200 1100 4000 1000 3800 3600 3400 In=200A In=2000A 3200 In=400A In=2500A 3000 In=630A In=3200A 2800 In=800A 2600 In=4000A...
  • Page 75 P-071 Air Circuit Breaker 12. Coordination recommendations Breaking capacity of Capacity of transformer Rated current Short circuit current air circuit breaker for (kVA) & parallelly of transformer In(A) of main circuit (kA) connected number main circuit (kA) 1×250 2×250 3×250 18.5 1×315 11.4...
  • Page 76 Air Circuit Breaker P-072 Number and area of the Breaking capacity of Type of air circuit Air circuit breaker busbar for main circuit air circuit breaker breaker for for branch circuit main circuit (n×W×T) for branch circuit (kA) NA1-1000X-400 NA1-1000X-400 2×(5×30) 18.5 NA1, NM8...
  • Page 77 P-073 Air Circuit Breaker 13. Selectivity protection 13.1 Selective protection between NM8 and NA1 NA1-2000X/NA1-2000XN/NA1-2000XH Circuit breaker Rated 1000 1250 current (A) Default setting ratings 5.04 of short time-delay 8In (kA) Setting Downstream Upstream 0.63～9.45 0.8~12 1~15 1.25~18.75 range (kA) Delayed tripping 0.1, 0.2, 0.3, 0.4 time (s)
  • Page 78 Air Circuit Breaker P-074 NA1-3200X/NA1-3200XN NA1-4000X NA1-6300X/NA1-6300XN 1600 2000 2000 2500 3200 4000 4000 5000 6300 12.8 25.6 50.4 1.6~24 2~30 2~30 2.5~37.7 3.2~48 4~60 4~60 5~75 6.3~94.5 0.1, 0.2, 0.3, 0.4 0.06, 0.14, 0.23, 0.35 1.6~24 2~30 2~30 2.5~37.7 3.2~48 4~60 4~60...
  • Page 79 P-075 Air Circuit Breaker Circuit breaker NA1-2000X/NA1-2000XN/NA1-2000XH Rated 1000 1250 current (A) Default setting ratings 5.04 of short time-delay 8In (kA) Upstream Downstream Setting 0.63～9.45 0.8~12 1~15 1.25~18.75 range (kA) Delayed tripping 0.1, 0.2, 0.3, 0.4 time (s) 0.06, 0.14, 0.23, 0.35 Returnable time Rated Instantaneous...
  • Page 80 Air Circuit Breaker P-076 NA1-3200X/NA1-3200XN NA1-4000X NA1-6300X/NA1-6300XN 1600 2000 2000 2500 3200 4000 4000 5000 6300 12.8 25.6 50.4 1.6~24 2~30 2~30 2.5~37.7 3.2~48 4~60 4~60 5~75 6.3~94.5 0.1, 0.2, 0.3, 0.4 0.06, 0.14, 0.23, 0.35 3.45~24 3.45~30 3.45~30 3.45~37.7 3.45~48 4~60 4~60...
  • Page 81 P-077 Air Circuit Breaker 13.2 Selective protection in NA1 NA1-2000X/NA1-2000XN/NA1-2000XH Circuit breaker Rated 1000 1250 current (A) Default setting ratings 5.04 of short time-delay 8In (kA) Upstream Downstream Setting 0.63～9.45 0.8~12 1~15 1.25~18.75 range (kA) Delayed tripping 0.1, 0.2, 0.3, 0.4 time (s) Returnable time 0.06, 0.14, 0.23, 0.35...
  • Page 82 Air Circuit Breaker P-078 NA1-3200X/NA1-3200XN NA1-4000X NA1-6300X/NA1-6300XN 1600 2000 2000 2500 3200 4000 4000 5000 6300 12.8 25.6 50.4 1.6~24 2~30 2~30 2.5~37.7 3.2~48 4~60 4~60 5~75 6.3~94.5 0.1, 0.2, 0.3, 0.4 0.06, 0.14, 0.23, 0.35 6.348~24 6.348~30 6.348~30 6.348~37.7 6.348~48 6.348~60 6.348~60...
  • Page 83 P-079 Air Circuit Breaker Intelligent Controller of NA1 series 14 Protection Features of intelligent controller 14.1 M/H and 3M/3H intelligent controller UI M/H control 3M/3H control Display window “Check” Display current value, setting value, tripping time and Switch to query menu so on “IR”...
  • Page 84 Air Circuit Breaker P-080 14.3 Explanation of M/H controller symbols 14.3.1 Explanation of symbols for reference symbol explanation IR= tR= Long delay current setting, long delay time setting Isd= tsd= Short delay current setting, short delay time setting Ig= tg= Earthing current setting, earthing time setting Instantaneous current setting Neutral line protection parameter setting...
  • Page 85 P-081 Air Circuit Breaker ②Setting state: press “Set” button in default interface to enter into setting interface. Current protection parameters, overload pre-alarm value, earthing alarm threshold value and delay time can be queried or changed in setting state. Tripping can be simulated by software. In this state, “▲”...
  • Page 86 Air Circuit Breaker P-082 Example3 of setting earthing alarm threshold current is shown below: Long press ③Query state: press “Check” button in default interface to enter into query interface. Last 8 fault records, last 8 alarm records, breaker operation times, life record and thermal capacity can be queried in query state. Example4 of querying second fault record is shown below:...
  • Page 87 P-083 Air Circuit Breaker Example5 of querying first alarm record is shown below: Example6 of querying breaker operation times and life record is shown below:...
  • Page 88 Air Circuit Breaker P-084 Example7 of querying thermal capacity after tripping is shown below: ④Tripping state: “Reset”button should be press to return default interface after tripping at fault. TRIP Press “Test” button to simulate Instantaneous trip TRIP TRIP TRIP TRIP Instantaneous trip state Earthing trip state...
  • Page 89 P-085 Air Circuit Breaker 14.3.3 Controller functions list M type H type 1 over-current protection (overload, short delay, instantaneous, earthing); 1 over-current protection (overload, short delay, instantaneous, earthing); vector sum grounding mode. vector sum grounding mode. 2 Neutral line protection 2 Neutral line protection 3 Current measurement 3 Current measurement...
  • Page 90 Air Circuit Breaker P-086 14.4.2 Overload long time-delay protection Operating characteristics Current Ratings Time Action time(s) tolerance Current Range(Ir) tolerance ≤1.05Ir >2h Non-trip ＞1.3Ir <1h trip (0.4~1)In+ OFF ±10% 1.5Ir(setting time) ±10% 2.0Ir 16.9 33.7 67.5 ±10% Phase N Overload and 100% or 50%(Applicable to 3P+N or 4P) Over-Current Characteristic 14.3 Short-circuit short-delay protection...
  • Page 91 P-087 Air Circuit Breaker 14.4.5 Earthing protection Earthing protection has definite time characteristic. Fault delay time is shown below. Earthing protection characteristic curve Ig=(0.2~0.8)In， min100A，max1200A 1000 或500A~1200A 0.01 I(xIn) Operating characteristics of single-phase earthing protection Current Ratings Time Current Action time(s) tolerance Range(Ig) tolerance...
  • Page 92 Air Circuit Breaker P-088 In three-phase four-wire system using 4-pole breaker without external transformer , earthing fault signal comes from three- phase current and N-Pole current vector sum. Operating characteristic is definite time protection. PT mode Contr -oller In three-phase four-wire system using 3-pole breaker with external N-pole transformer, earthing fault signal comes from three- phase and N-Pole current vector sum.
  • Page 93 P-089 Air Circuit Breaker 15.2 Shunt release Shunt release can realize the remote control to break the circuit breaker. Characteristic Type NA1-2000X/NA1-2000XN/NA1-2000XH/NA1-3200X/NA1-3200XN/NA1-4000X/NA1-6300X/NA1-6300XN NA1-1000X Rated control power voltage Us(V) AC230, 400 DC220, 110 AC400, 230, 127 DC220, 110 Work voltage (0.7-1.1)Us 56VA 250W 300VA...
  • Page 94 Air Circuit Breaker P-090 15.5 Auxiliary contact NO Standard model: 4NO(normal open)/4NC(normal close) and 6NC(normal close). Characteristic NA1-1000X Type NA1-2000X/NA1-2000XN/NA1-2000XH/NA1-3200X/NA1-3200XN/NA1-4000X/NA1-6300X/NA1-6300XN Rated voltage (V) AC230 AC400 DC220 AC230 AC400 DC220 conventional free-air thermal current Ith (A) Rated control capacity 300VA 100VA 300VA 300VA NA1-1000X...
  • Page 95 P-091 Air Circuit Breaker 15.9 Off position locking mechanism When the circuit breaker is disconnected, padlock can be used to lock it after pulling out the lock lever, then the circuit breaker can't be “Test” or “connected” position.( Padlock is prepared by users) 15.10 Key lock Lock the circuit breaker on the OFF position, then the circuit breaker can't be closed.
  • Page 96 Air Circuit Breaker P-092 15.12 Connecting-rod type mechanical interlock Two vertical-installed three-poles or four-poles, drawout-type or fixed type circuit breakers realize the interlock between one breaker with another two different-state breakers. Circuit diagram Available running manner Manner 1: three power supplies are provided for one circuit breaker only 52 60 1QF 2QF...
  • Page 97 P-093 Air Circuit Breaker Maintenance and Overhaul of Circuit Breaker Safety Precautions The following operations must be executed in turn before conducting the maintenance or overhaul of circuit breakers: a. Circuit breaker opening operation to ensure the circuit breaker is in an opening state; b.
  • Page 98 Air Circuit Breaker P-094 16.2 Overhaul of circuit breaker 16.2.1 Connecting and mounting inspection It is proposed to refer to the following requirement for the torsional forces of main circuit and secondary circuit. Fastener specification Torque requirement N·m 0.5~0.7 1.2~1.7 16~26 36~52 61~94...
  • Page 99 P-095 Air Circuit Breaker 16.2.4 Inspection of circuit breaker components 16.2.4.1 Face shield dismantling · Remove four bolts of circuit breaker fixed panel and take off the face shield. Note: The picture takes NA1-2000X as an example. 16.2.4.2 Operating mechanism inspection The mechanism components should be free of fracture and damage, and the fasteners are fastened.
  • Page 100 Air Circuit Breaker P-096 · Press the “Test” button to simulate the tripping test. · Press the orange “Reset” button on the face shield to return to normal state. 16.2.4.4 Drawer set inspection (conduct the test after removing the body, taking NA1-2000X as an example) There are no foreign objects inside.
  • Page 101 P-097 Air Circuit Breaker The flash barrier opening or closing is normal, and the spacing contact has no deformation or oxidization. · Rotate to the · Rotate NA1-2000X~6300X to “Disconnected” position, the Connected position. and the flash barrier is · Press down NA1-1000X shown as the left figure.
  • Page 102 Air Circuit Breaker P-098 16.2.4.6 Required main contact (taking NA1-2000X~6300X as an example) over-travel≥2mm. · Conduct manual closing operation, and observe the main contact over-travel. Note: Please replace the contact if it reaches the position shown. Clear dust, corrosion layer and particle burnt objects. ·...
  • Page 103 P-099 Air Circuit Breaker 16.3.2 Replacement of draw-out accessories Rotate the body to the detachment position and remove the body. Remove the panel fixing bolts and dismantle the panel. Untie the tape and remove the connecting conductor. Remove the fixed accessory mounting screws. Dismantle the accessories and replace same.
  • Page 104 Air Circuit Breaker P-100 17.2 Faulty tripping analysis (taking NA1-2000X M as an example) Failure cause identification The failures are identified through the intelligent controller indication.. · Presss the “Reset” button till · Press the “Check” button to it returns to the default display enter the query menu interface;...
  • Page 105 P-101 Air Circuit Breaker 18. Regular malfunction and solutions Fault description Reasons analysis Maintenance method 1. Check the breaking current value and operation time of intelligent release. Over load tripping 2. Analyze the load and electric network, exclude the overload if it happens. (Ir indicator flashing) 3.
  • Page 106 Air Circuit Breaker P-102 Fault description Reasons analysis Maintenance method Manual storage can't be realized Mechanical fault with the energy-storage device Motor storage can't be realized Circuit breaker 1. Power voltage of motor 1. Power voltage of motor energy-stored device shouldn't less can't store energy energy-stored device is less than 85%Us;...
  • Page 107 P-103 Air Circuit Breaker NA1-1000X~6300X Ordering specification Customer: Tel: Date: Quantity: Model □NA1-1000X □ NA1-2000X □ NA1-2000XN □ NA1-2000XH □ NA1-3200X □ NA1-3200XN NA1-4000X □ NA1-6300X □ NA1-6300XN □ 4000 □ 5000 □ □ □ □ □ □ □ □ 1000 2000 2500...
  • Page 108 Air Circuit Breaker P-104 Configuration instructions 2. NA1-1000X fundamental configurations 1. NA1-2000X~6300X fundamental configurations a. Motor-driven: a. Motor-driven: Under-voltage instantaneous release; Under-voltage instantaneous release; Shunt release; Shunt release; Closing electromagnet; Closing electromagnet; Motor driven operating mechanism; 4 suits of transform contact; 4 normal open and 4 normal close auxiliary Motor driven operating mechanism;...

This manual is also suitable for:

Na1Na1-1000xNa1-2000xNa1-2000xnNa1-2000xhNa1-3200x ... Show all