GF4146数据手册UTC中文资料规格书

描述 Description

The UTC GF4146 is a two-wire low-power controller for  Residual Current Devices (RCD) and AC outlet Appliance Leakage Circuit Interrupters (ALCI) . The UTC GF4146 detects hazardous grounding conditions and open circuits the line before a harmful shock occurs.   Internally, the UTC GF4146 contains a diode rectifier, 12V shunt regulator using a precision temperature-compensated bandgap reference, precision low VOS offset-sense amplifier, time delay noise filter, window-detection comparators, and a SCR driver. With the addition of a minimum number of external components, the UTC GF4146 detects and protects against a hot-wire-to-ground fault. The UTC  GF4146 circuitry has a built-in rectifier and shunt regulator that operates with a low quiescent current. This allows for a high-value, low-wattage-series supply resistor. The internal temperature compensated shunt regulator, sense amplifier, and bias circuitry provide for precision ground-fault detection. The low VOS offset-sense amplifier allows direct coupling of the sense coil to the amplifier’s feedback signal. This eliminates the large 50/60Hz AC-coupling capacitor. The internal delay filter rejects high-frequency noise spikes common with inductive loads. This decreases false nuisance tripping. The internal SCR driver is temperature compensated and designed to satisfy the current requirements for a wide selection of external SCRs.

特性 Features

For Two-Wire ALCI and RCD ApplicationsPrecision Sense Amplifier and Bandgap ReferenceBuilt-in AC RectifierDirect DC Coupled to Sense CoilLow-Voltage SCR DisableAdjustable SensitivityBuilt-in Noise Filter  SCR Gate Driver  Minimum External Components    Meets UL 943B Requirements  Ideal for 120V or 220V Systems