Switching Power Amplifier

JOEO switching power amplifiers use an intelligent logic control system to ensure optimal performance, safety and reliability. Standard amplifier output ranges from 1 to 480 kVA. Interlocks to prevent vibrator damage or operator injury include: overvoltage, overcurrent, amplifier overheat, vibrator overheat, overrange, phase failures, and power module failures. The amplifier provides drive power for vibrators, excitation coils, blower units, and other auxiliary components.

High conversion efficiency > 91 percent
Emergency stop (E-stop) on front panel
Optional remote control panel (RCP) that duplicates functionality of amplifier front panel
Space saving low-profile cabinet for amplifiers with outputs from 1 to 6 kVA
LCD display for status and diagnostic messages
Meets or exceeds international requirements for safety and EMC
Selectable BNC connection on front panel and rear cabinet for drive input
Low harmonic distortion < 0.5% at typical testing frequencies
Designed for continuous use over extended periods of operation

parameter

switching power Amplifier

Amplfier Model	JER-H402A	JER-H802A	JER-H123A	JER-H243A	JER-H323A	JER-H563A
Max. Output Power (kVA)	4	8	12	24	32	56
Number of Power Modules	1	1	2	3	4	7
Rated Output Voltage (Vrms)	120	120	120	120	120	120
Switching Frequency(Hz)	150k	150k	150k	150k	150k	150k
Harmonic Distortion (5-5000Hz)	≤0.8%	≤0.8%	≤0.8%	≤0.8%	≤0.8%	≤0.8%
Signal Noise Ratio (dB)	>65	>65	>65	>65	>65	>65
Frequency response(5-5000Hz)	±1.5dB	±1.5dB	±1.5dB	±1.5dB	±1.5dB	±1.5dB
Input Impedance(KQ)	>10	>10	>10	>10	>10	>10
Output field voltage(VDC)	270	270	270	270	270	270
Amplifier Efficiency	>93%	>93%	>93%	>93%	>93%	>93%
Interlocks Protection	Input over/less voltage, Output over current/voltage, over travel/temperature, Oil pressure, Logic/module/cooling failure, etc.