PQ877D-4X1，PQ877D-4X2，PQ877D-4X3，PQ877D-4X4，PQ877D-4X5，無功功率數顯表
PQ877D-4X6，PQ877D-4X7，PQ877D-4X8，PQ877D-9X1，
PQ877D-9X2，PQ877D-9X3，PQ877D-9X4，PQ877D-9X5，
PQ877D-9X6，PQ877D-9X7，PQ877D-9X8，PQ877D-DX1，
PQ877D-DX2，PQ877D-DX3，PQ877D-DX4，