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24 Specifications
3.7.3 Electrical Specifications of the Helios Rectifiers 200I/48 and 200E/48
The electrical specifications of the Helios Rectifiers 200I/48 and 200E/48 are listed in
Table 27.
3.7.4 Standards
The following standards also apply to the rectifiers:
• ANSI Std. C62.41/IEEE Std. 587-1980, Class A and B lightning surge 6000 V, 3000 A, 1.2 x 50
ms impulse, 10 hits per second
• ANSI Std. C82.41 oscillatory surge 2500 V, 0.5 ms impulse, 100kHz positive/negative oscillat-
ing decay
• Bellcore TR-TSY-000947
• IEC-950, VDE EN 60950, EN 41003
• CISPR 22, Class A
• CE mark
Table 27 Electrical specifications of the Helios Rectifiers 200I/48 and 200E/48
Parameter Specification
Input voltage
Helios Rectifier 200I/48:
380/415 V AC, three phase, 47-63 Hz
Input voltage range: 330 to 475 V AC
Helios Rectifier 200E/48:
480 V AC, three phase, 47-63 Hz
Input voltage range: 430 to 520 V AC
Input current
Helios Rectifier 200I/48: 18.3 A RMS nominal at 380 V AC input and -54 V DC, 200 A
output (24 A RMS worst case)
Helios Rectifier 200E/48: 15 A RMS nominal at 480 V AC input and -54 V DC, 200 A
output (17 A RMS worst case)
Input protection
A 3 pole / 25 A circuit breaker opens all three lines.
Recommended AC
service input
30 A, 3 pole AC circuit breaker
Output voltage
Float: -46 to -58 V DC
Equalize: 0 to 4 V DC above Float
Maximum: -60 V DC
Output current
200 A nominal
Adjustable between 100 and 210 A
Output protection
The rectifier is protected by a 250 A circuit breaker at the output.
The output current is limited to a value adjustable from 50% to 105% of the rated
capacity of the rectifier. This circuit is factory set to 205 A.
Output regulation
The rectifier output voltage is automatically regulated to remain within ±0.5% of the
selected value under all load conditions and within the specified input voltage,
frequency, and ambient temperature ranges. And within + 1% for any combinations of
specified input, output and environmental conditions.
Efficiency
Efficiency is better than 89% at nominal input voltage and an output load greater than
80 A.
Power factor
Power factor is better than 0.99 at nominal input voltage and an output load greater
than 80 A.
Electromagnetic
interference (EMI)
The rectifier meets the FCC requirements for conducted and radiated EMI for Class
“B” equipment.
Heat dissipation
1,335 W (4,558 Btu/hr) at -54 V DC, 200 A output
Total harmonic
distortion (THD)
THD is less than 5% between half load and full load at nominal input voltage