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ENV4200四线人工电源网络能够分别测量每个导体对地电压的人工电源网络。注：V形网络可设计成用于任意导体数的网络。
特点：
| ENV4200四线人工电源网络规格 | ||
| 频率范围 | 150 kHz to 30 MHz | |
| 模拟阻抗 | 50 μH || 50 Ω | |
| 根据 CISPR 16-1-2 的误差限值 | 幅度和相位 | ±20% and ±11.5° |
| 电源与测量接收机端口之间的去耦合衰落，根据 CISPR 16‑1‑2 | 150 kHz to 30 kHz | > 40 dB |
| 到EUT的测试路径 | ||
| 大可允许恒定电流 | N, L1, L2, L3 | 200 A |
| 电源电压 | N, L1, L2, L3 (star/delta voltage) | 0 V to 400 V/690 V AC + 10% |
| 直流电压 | N, L1, L2, L3 | 0 V to 690 V DC + 10% |
| 峰值电流 | N, L1, L2, L3 | 250 A (2 minutes) |
| 到测量接收机的测试路径 | ||
| 大可允许的 EUT 射频干扰功率 | 5 W | |
| Voltage division factor between EUT and measuring receiver port | built-in attenuator pad, calibration data supplied with V-network | 10 dB – 0.5 dB/+ 2.5 dB |
| Response threshold | can be switched off | 140 dB (µV) (nom.) |
| 风扇电源及控制逻辑 | ||
| Mains voltage | 115 V setting | 100 V to 120 V AC ± 10% |
| 230 V setting | 220 V to 240 V AC ± 10% | |
| Mains frequency | 50 Hz to 60 Hz ± 5% | |
| Power consumption | 100 VA (nom.) | |
| 连接器 | ||
| Mains and DC voltage output | front panel, N, L1, L2, L3 | panel connector (Multi-Contact) |
| RF output | front panel, TO TEST RECEIVER | N female, 50 Ω |
| Artificial hand | front panel | 4 mm connector, female |
| Mains and DC voltage input | rear panel, N, L1, L2, L3 | panel connector (Multi-Contact) |
| Mains voltage input (auxiliary voltage) | rear panel, POWER FOR FAN AND REMOTE CONTROL | low-temperature connector with mains filter |
| Remote control input | rear panel, REMOTE CONTROL | 25-contact, D-Sub, female |
| Protective earth | front panel and rear panel | M10 threaded bolt |
| RF reference ground | on both sides | ground bar with eleven M6 threads |
| 通用数据 | ||
| Operating temperature range | +5°C to +45°C | |
| Storage temperature range | –40°C to +70°C | |
| Dimensions | W × H × D, overall | 446 mm × 325 mm × 595 mm |
| Weight | 39 kg | |
| Electrical safety | observe notes in manual | in line with EN61010-1 |
| EMC | in line with IEC/EN61326-1 | |
| Emission | class B, in line with residential environment requirements | |
| Immunity | in line with industrial environment requirements | |
主要作用有以下几个方面：
(1)为50Hz市电提供通路。由于靠电网这一侧的电感非常小(50μH)，不足以在市电频率下形成大的阻抗，因此市电可畅行无阻地为试品提供电能，同时电网侧的电容(1μF)还能进一步衰减来自电网的干扰信号。
(2)隔离被测开关电源工作中产生的射频电磁干扰(测量频率为0．15MHz～30MHz)。利用网络电感在射频下的高阻抗，可阻止由开关电源产生的射频干扰信号进入电网。
(3)通过靠近开关电源一侧的耦合电容(0．1μF)转接由开关电源产生的射频干扰信号进入接收机。
(4)稳定阻抗。由于各个电网的阻抗不同，使得开关电源干扰电压的值也各不相同。为此，标准规定了一个统一的阻抗(50Ω)，以便于测试结果的相互比较。
