Generator Control Basic E7800 SERIES Motorized Potentiometer Description The E7800 Motorized Potentiometer is typically used as an interface between increase/decrease contacts and a device requiring control/adjustments by an external potentiometer. In generator control applications, the E7800 can be used as speed trim of an electronic speed governor, interfacing the synchronizer or the load sharer. It can also be used alone for manual speed adjustment or speed trim of electronic governors, or for remote control of generator voltage, power factor and reactive load (E7800 connected to Automatic Voltage Regulator (AVR)). Ordering Information ORDERING NUMBER SUPPLY VOLTAGE) (VAC) (VDC) OUTPUT OPTIONS SPECIAL FUNCTION E7800.0030 230 V 200, 1 turn 1 RPM E7800.0040 230 V 500, 1 turn 1 RPM E7800.0050 230 V 1k, 1 turn 1 RPM E7800.0060 230 V 2k, 1 turn 1 RPM E7800.0070 230 V 10k, 1 turn 1 RPM E7800.0080 230 V 5k, 10 turn 2 RPM E7800.0090 230 V 100, 10 turn 2 RPM E7800.0100 230 V 200, 10 turn 2 RPM E7800.0200 110/100 V 2k, 1 turn 1 RPM Features & Benefits E7800.0210 110/100 V 10k, 1turn 1 RPM FEATURES Wire-wound potentiometer BENEFITS Longer life expectation than carbon potentiometers E7800.0220 24 V 5k, 10 turn 2 RPM E7800.0230 24 V 100, 10 turn 2 RPM Friction clutch Motor can turn potentiometer against end position continuously, without damaging it E7800.0240 24 V 200, 10 turn 2 RPM E7800.0250 24 V 500, 10 turn 2 RPM Resistance from 100 to 10 k Wide range of potentiometers suitable for any governor or AVR E7800.0260 24 V 1k, 10 turn 2 RPM 24 V DC version with Adjustable RPM Simple fine tuning possibility in regulation applications E7800.0270 24 V 2k, 10 turn 2 RPM Built-in dust seal Long life expectation E7800.0280 24 V 10k, 10 turn 2 RPM E7800.0290 110/100 V 5k, 10 turn 2 RPM E7800.0300 110/100 V 100, 10 turn 2 RPM E7800.0310 110/100 V 200, 10 turn 2 RPM E7800.0320 110/100 V 500, 10 turn 2 RPM E7800.0330 110/100 V 1k, 10 turn 2 RPM E7800.0340 110/100 V 2k, 10 turn 2 RPM E7800.0350 110/100 V 10k, 10 turn 2 RPM E7800.0360 230 V 5k, 1 turn 2 RPM E7800.0370 230 V 100, 1 turn 2 RPM E7800.0380 230 V 200, 1turn 2 RPM E7800.0390 230 V 500, 1 turn 2 RPM Simplified Circuit Diagram POWER SUPPLY E7800 (Motorized Potentiometer) INCR M DEC (c) 2015 Littelfuse Protection Relays & Controls www.littelfuse.com/e7800 Rev: 4-C-032515 Generator Control Basic E7800 SERIES Ordering Information (cont.) Specifications ORDERING NUMBER SUPPLY VOLTAGE) (VAC) (VDC) OUTPUT OPTIONS SPECIAL FUNCTION E7800.0400 230 V 1k, 1 turn 2 RPM E7800.0410 230 V 2k, 1 turn 2 RPM E7800.0420 230 V 10k, 1 turn 2 RPM E7800.0430 24 V 5k, 1 turn 1 RPM E7800.0440 24 V 100, 1 turn 1 RPM E7800.0450 24 V 200, 1 turn 1 RPM E7800.0460 24 V 500, 1 turn 1 RPM E7800.0470 24 V 1k, 1 turn 1 RPM E7800.0480 24 V 2k, 1 turn 1 RPM E7800.0490 24 V 10k, 1 turn 1 RPM E7800.0640 24 V 5k, 1 turn 0.8 - 6 RPM E7800.0650 24 V 100, 1 turn 0.8 - 6 RPM E7800.0660 24 V 200, 1 turn 0.8 - 6 RPM E7800.0670 24 V 500, 1 turn 0.8 - 6 RPM E7800.0680 24 V 1k, 1 turn 0.8 - 6 RPM E7800.0690 24 V 2k, 1 turn 0.8 - 6 RPM E7800.0700 24 V 10k, 1 turn 0.8 - 6 RPM E7800.0710 24 V 5k, 10 turn 0.8 - 6 RPM E7800.0720 24 V 100,10 turn 0.8 - 6 RPM E7800.0730 24 V 200, 10 turn 0.8 - 6 RPM E7800.0740 24 V 500, 10 turn 0.8 - 6 RPM E7800.0750 24 V 1k, 10 turn 0.8 - 6 RPM E7800.0760 24 V 2k, 10 turn 0.8 - 6 RPM E7800.0770 24 V 10k, 10 turn 0.8 - 6 RPM Voltage range AC: 90-120% DC: 75-125% Consumption AC: 2.5 VA DC: 2 W Operating Temperature -15 C to +70 C EMC CE according to EN50081-1 EN50082-1 EN50081-2 EN50082-2 Approvals CE, RRR Burn-in 50 hours before final test Weight 0.35 kg Dimensions H 96 mm (3.8"); W 96 mm (3.8"); D 80 mm (3.1") Panel cut out H 92 mm (3.6"); W 92 mm (3.6") The E7800 cannot be used for both AC and DC. The unit must be specified to order. Other voltages and combinations are available on request. (c) 2015 Littelfuse Protection Relays & Controls www.littelfuse.com/e7800 Rev: 4-C-032515 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Littelfuse: E7800.0410 E7800.0720 E7800.0640 E7800.0010 E7800.0120 E7800.0050 E7800.0700 E7800.0710 E7800.0420 E7800.0770 E7800.0140 E7800.0730 E7800.0670 E7800.0080 E7800.0690 E7800.0360 E7800.0680 E7800.0740 E7800.0760 E7800.0750 E7800.0130 E7800.0660 E7800.0650 E7800.00