This standard provides two quick detection methods for elevator balance coefficients, namely the secondary loading current method and the no-load power method. The secondary loading current method is based on the traditional current-curve method and quickly determines whether the balance coefficient of the ladder under test is between 0.4 and 0.5 by only measuring the load current values under two states of 40% and 50% of the rated load. . The no-load current method measures the motor operating power and car operating speed in the elevator's no-load upward and no-load downward states, and uses the energy transfer function relationship of the elevator system to establish a mathematical model and solve it to obtain the balance coefficient of the measured elevator. .