The voltage regulator type "MARK I" is suitable for MARELLI MOTORI Synchronous Generators, MJB series, size range 160-500s. This regulator is suitable to operate on machines from 10 to 2000 kVA. The regulator is completely isolated to maintain high reliability also in severe environmental conditions (high humidity, dust, saline atmosphere) and in case of high vibration level. The regulator is suitable for both single-phase and three-phase operation.
Technical Specifications
| Supply voltage | ± 10% tolerance range, 50 / 60Hz 170 ÷ 277 V |
| Voltage sensing (single-phase or three-phase) | ± 10% tolerance range, 50 / 60Hz 170 ÷ 480 V |
| Current detection (1 phase) | 50 / 60Hz 0 ÷ 1 A |
| Maximum continuous field current | 8 A |
| Maximum forced field current | 1 minute forced 15 A |
| Maximum field voltage | 100 V |
| Field resistance | 3.5 W ÷ 20 W |
| Thermal drift | For 50 ° C change in T amb, after 10 minutes) ± 0.5% |
| Operating temperature | 30 ° C / + 70 ° C |
| Weight | 670 g |
Accuracy of regulation
