Water-cooled radiator specialized for frequency converter and frequency converter

The utility model discloses a water-cooled radiator specialized for a frequency converter and the frequency converter. The water-cooled radiator specialized for the frequency converter comprises a heat radiation substrate (1), a water channel plate (3), a sealing element (5) and a connecting element (8). One face of the heat radiation substrate (1) is provided with power modules (4) while the other face is provided with the water channel plate (3). The water channel plate (3) comprises a water inlet (6), a water outlet (2) and a water channel (7). Both the heat radiation substrate (1) and the water channel plate (3) are of a flat plate shape and connected through the connecting element (8) to form a cooling water flow channel. The heat radiation substrate (1) and the water channel plate (3) are further sealed through the sealing element (5) for preventing cooling water from leaking from the face where the heat radiation substrate (1) and the water channel plate (3) are installed and combined. The utility model further discloses the frequency converter which comprises the aforementioned radiator. The radiator provided by the utility model has great heat exchange effects and strong heat radiation capabilities. The radiator can be directly connected to on-site industrial tap water. Maintenance can be further facilitated.