PRODUCT INTRODUCTION
NQQ3 series Type double power automatic switching switch (hereinafter referred to as switch) is suitable for AC 50Hz or 60Hz, rated operating voltage 400V, rated operating current 63, grade a following double loop power supply system. The selective conversion between two power supplies may be required. The product has the functions of short circuit, overload, undervoltage and loss of voltage protection. It also has the functions of fire protection, double output and closing signal. The utility model is especially suitable for the installation and use of lighting circuits for office buildings, shopping malls, banks, stations, hospitals and high - rise buildings where fire protection requirements are required.
The ATS compliant with GB/T 14048.11 and IEC 60947-6-1 standard
PARAMETERS
Product Model | NQQ3-125 |
Type | Grid (P) - Grid (P), Grid (P) - Oil Engine (G), Grid (P)-Photovoltaic(PV) |
Electrical Characteristics | |
Pole Number | 2P, 4P |
Rated Current Ie (A) | 16, 20, 25, 32, 40, 50, 63, 80, 100, 125 |
Rated Voltage Ue (V) | 110(customized), 230, 400, 415 |
Rated Insulation Voltage Ui (V) | 800 |
Rated Withstand Impulse Voltage Uimp (kV) | 8 |
Rated Impulse Withstand Current Icw (kA) | 5/30ms |
Rated Short - circuit Making Capacity Icm (kA) | 8 |
Electrical category | PC Class |
Usage Category | AC-33B |
Operation Method | Auto, Manual |
Contact Conversion Time (s) | 0.6±20% |
Conversion Action Time (s) | 2.5±20% |
Recovery Time (s) | 2.5±20% |
Power - off Time (s) | 0.6±20% |
Electromagnetic Compatibility Environment | Environment B |
Mechanical Characteristics | |
Mechanical Service Life (Times) | 8000 |
Electrical Service Life (Times) | 2000 |
Installation Characteristics | |
Terminal | Tunnel - type Terminal |
Maximum Torque (N.m) | 3 |
Installation | Vertical Fixed Installation |
SIZE (UNIT: MM)
WIRING METHOD
PRECAUTIONS AND WARNING
1, Pre-operation Safety
Disconnect and verify both power sources are dead with a tester before operation. Never work on live units-risk of electric shock. Keep the area free of flammables or dust.
2, Mode Switching Check
voltage/frequency match before switching manual/auto modes. Avoid forced switching during load surges; may cause malfunctions or damage. Watch for jams/noises manually.
3, Maintenance Rules
Never skip insulation tests or interlock checks. Clean contacts with alcohol (no sandpaper). Ensure no simultaneous closing of two sources to prevent short circuits.
4, Load Limits
Never exceed rated current. Avoid sudden heavy inductive loads. Overload can weld contacts or trip circuits. Size ATS for load type, with 1.5-2x margin for inductive loads.
5, Abnormal Handling
Shut off both sources immediately if ATS switches frequently, smells odd, or flashes. No resetting-risk of fire. Only qualified technicians repair, test after fixing.