通过选择需要测量的参数，只要一个带多个 CT、VT 通道的 UR就可以满足以上要求。提供一个机械装置来一个或一组 AC 交流参数用做保护 / 控制比较器或其它的测量元件的输入。测量参数的选择一部分是由测量元件的设计来决定或是一部分由保护 / 控制比较器来决定参数的类型（基频相量，谐波相量，对称元件，全波有效值，相间或相电压等等）。
ALLEN BRADLEY 7.5HP VARIABLE FREQUENCY AC DRIVE 1336F-B
OBERG IWS2424 MISFEED MONITOR, NNB
VICKERS POWER AMPLIFIER BOARD FOR PROPORTIONAL CONTROL
FOXBORO 823DP-I3K1NM1 12.5-65 VDC 3000 PSI ELETRONIC T
UNICO 314-847 CENTRAL PROCESSING UNIT, NNB
INDUCTOHEAT INC 10310.075 CAPACITOR 3000 kVAR 1875 V 10
ZEBRA 105SL MID-RANGE THERMAL PRINTER, S-Series, Missin
OMRON C200HW-BC081-V1 RACK W/ MODULES, P/S, & CPU63
DEMAG CRANES & COMPONENTS DC-PRO 2-250 H5V1 CHAIN HOIST
SQUARE D PQ3620G I-LINE BUSWAY UNIT, 200 Amp
TIMKEN FAFNIR 2MM311WI DUL SUPER PRECISION BEARING SET,
TORRINGTON FAFNIR 2MM311WI CR DUL SUPER PRECISION BEARI
R.S. CORCORAN Model F Series 4000, PEDESTAL-MOUNTED, CE
OMRON C200HW-VC101 RACK W/ MODULES P/S & CPU43
INDRAMAT NAM 1.2-15 AC SERVO LINE FILTER
STEWART WARNER CORPORATION 385007-A1 M-6 SWITCH, NIB
