Related Manuals for CHINT NM8N Series
Summary of Contents for CHINT NM8N Series
- Page 1 NO:2022.05 NM8N High-voltage (HV) Series Molded Case Circuit Breaker Standards: IEC/EN 60947-2 GB/T 14048.2...
- Page 2 Safety Alert 1 It is strictly prohibited to install the product in the environment containing flammable & explosive gas and wet condensation, and it is strictly prohibited to operate the product with wet hand. 2 Do not touch the conductive part of the product during product operation stage .
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Page 3: Table Of Contents
Contents Main Purpose and Scope of Application Model, Specification and Meaning Conditions and Environments for Normal Ser vice, Installation, and Transportation & Storage Check and Test Overall and Installation Dimensions Release Installation and Wiring Tripping Characteristic Cur ves Table of Rated Working Current and Temperature Compensation Coefficient Altitude Derating Coefficient Table Internal Accessor y and Installation... -
Page 4: Main Purpose And Scope Of Application
NM8N High-voltage (HV) Series Molded Case Circuit Breaker Main Purpose and Scope of Application This is the Instruction Manual for the NM8N High-voltage (HV) Series Molded Case Circuit Breaker, hereafter referred to as the Circuit Breaker. The Manual specifies the conditions and environments where the product is expected to be operated within, and it outlines the main specifications, technical parameters, the overall and installation dimensions, and other matters for this Circuit Breaker. -
Page 5: Check And Test
NM8N High-voltage (HV) Series Molded Case Circuit Breaker Please see the attached Tables for the product Inverse Time Characteristics, Temperature Compensation Curves and Altitude Derating Correction Factor. Pollution Class: Class 3; Installation Category: Class III. 3.2 Conditions and Environments for Installation Under the conditions of Safety Alert of this Instruction Manual, it shall be installed in a place without shaking, impact and vibration;... - Page 6 NM8N High-voltage (HV) Series Molded Case Circuit Breaker Model To ensure minimum installation distance Back to the LOCK postion TRIP Test...
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Page 7: Overall And Installation Dimensions
NM8N High-voltage (HV) Series Molded Case Circuit Breaker Overall and Installation Dimensions Terminal Cover Arc Isolating Plate 4 x ø 5.5 or 4 x M5 Fig 1 Overall and Installation Dimensions for NM8N - 250 HV... - Page 8 NM8N High-voltage (HV) Series Molded Case Circuit Breaker Terminal Cover Arc Isolating Plate 4 x ø 5.5 or 4 x M5 Fig 2 Overall and Installation Dimensions for NM8N - 400/630 HV...
- Page 9 NM8N High-voltage (HV) Series Molded Case Circuit Breaker Opening A Opening B Opening C Fig 3 Opening Sizes in front of NM8N - 250 ~ 630 HV Cover Unit: mm Model Size Size Code Category Opening sizes in front of Cover Table 1 Opening Sizes in front of NM8N - 250 ~ 630 HV Cover...
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Page 10: Release
NM8N High-voltage (HV) Series Molded Case Circuit Breaker Release The setting value of over-current protection are adjustable. The setting value of short-circuit protection are adjustable. Example: Take NM8N-250HVS TM 250 3P as an example: Knob for adjusting long-delay current setting Knob for instantaneous current setting Setting Value of Thermal Magnetic-type Release Number... -
Page 11: Installation And Wiring
NM8N High-voltage (HV) Series Molded Case Circuit Breaker Installation and Wiring Sizes for Front Connection Plate and Conductor... - Page 12 NM8N High-voltage (HV) Series Molded Case Circuit Breaker...
- Page 13 NM8N High-voltage (HV) Series Molded Case Circuit Breaker Size NM8N-250HV,400HV and 630HV...
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Page 14: Tripping Characteristic Curves
NM8N High-voltage (HV) Series Molded Case Circuit Breaker Tripping Characteristic Curves 8.1 Thermal Magnetic Tripping Characteristic Cur ves of Distribution Protection NM8N-250HV(63A,80A and 100A) NM8N-250HV(125A and 160A) - Page 15 NM8N High-voltage (HV) Series Molded Case Circuit Breaker NM8N-250HV(180A,200A,225A and 250A) NM8N-400HV(250A,315A,350A and 400A)
- Page 16 NM8N High-voltage (HV) Series Molded Case Circuit Breaker NM8N-630HV(400A,500A and 630A)
- Page 17 NM8N High-voltage (HV) Series Molded Case Circuit Breaker 8.2 Electromagnetic Tripping Characteristic Cur ve of Motor Protection NM8N-250HV(63A,80A and 100A) Maximum Heat Tolerance NM8N-250HV( 125A,160A,180A,200A, 225A and 250A) Maximum Heat Tolerance...
- Page 18 NM8N High-voltage (HV) Series Molded Case Circuit Breaker NM8N-400HV( 250A,315A, 350A and 400A) Maximum Heat Tolerance NM8N-630HV(400A,500A and 630A) Maximum Heat Tolerance...
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Page 19: Table Of Rated Working Current And Temperature Compensation Coefficient
NM8N High-voltage (HV) Series Molded Case Circuit Breaker Table of Rated Working Current and Temperature Compensation Coefficient Air Temperature Rated Current Altitude Derating Coefficient Table Altitude (m) Rated working current (In) Rated working voltage Ue (V) Rated insulation voltage Ui (V) Dielectric properties (V) Rated insulation impulse voltage... -
Page 20: Internal Accessory And Installation
NM8N High-voltage (HV) Series Molded Case Circuit Breaker Internal Accessory and Installation... -
Page 21: Warranty Period
NM8N High-voltage (HV) Series Molded Case Circuit Breaker Warranty Period 12.1 Warranty Period Under the normal storage & transportation conditions and this product package or this product itself is intact, the Warranty Period of this product is 36 months from the date of production. The following conditions are not covered by the Warranty: 1) Damage caused by improper use, storage and maintenance of User. - Page 22 NM8N High-voltage (HV) Series Molded Case Circuit Breaker NM8N High-voltage (HV) Series Molded Case Circuit Breaker IEC/EN 60947-2,GB/T 14048.2 PD1 Inspecror 30...
- Page 23 NM8N High-voltage (HV) Series Molded Case Circuit Breaker User Instruction...
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