Product Description: This tester with standard 4 phase voltage,3 phase current output, voltage 125V/phase, current 40A/phase, 3 phases in parallel can up to 120A. Digital Signal Processor Microcomputer. Not only test the traditional relays and protectors, but also test modern micro computer replays,special for transformer differential protection and transfer equipment. All technical indicators meet the standard DL/T624-1997: Technical condition of the relay computer test device. Technical Index: 1. AC current source Phase current output (effective value): 0~40A/phase, accuracy 0.5%. 3 phase parallel current output (effective value): 0~120A/3 phase parallel output in same phase Phase current working value for allowed long time (effective value): 10A Maximum output power of each Phase: 420VA Maximum output power of 3 parallel current: 900VA Maximum permitted work time of 3 parallel current: 10S Frequency range: 0~1000Hz; accuracy: 0.001Hz Harmonic time: 2~20; phase: 0--360°; accuracy: 0.1° 2. DC current source Current output: 0~±30A / phase, accuracy:0.5% 3. AC voltage source Phase voltage output (effective value): 0~125V/phase, accuracy: 0.5% Line voltage output (effective value): 0~250V Phase voltage / Line voltage output power: 75VA / 100VA Frequency range: 0~1000Hz accuracy: 0.001Hz Harmonic time: 2~20; phase: 0--360°; accuracy: 0.1° 4. DC voltage source Phase voltage output range: 0~±150V accuracy: 0.5% Line voltage output range: 0~±300V Phase voltage / Line voltage output power: 970VA / 180VA 5. Switch terminal Switch input terminals: 8 pairs Dead contact: 1-20mA, 24V active output inside the device. Potential flip: 0--6V DC low level 15-250V DC high level Switch output terminals: 4 pairs, dead contact, rupturing capacity: 110V/2A, 220V/1A 6. Time measurement range Range: 1ms-9999s; accuracy: 1ms 7. Dimension & weight Dimension: 455 (mm)�530 (mm)�220 (mm) Weight: 20Kg. 8. Power AC220V±10% 50Hz 10A Our Service: Pre-sale Service: Inquiry will be replied within 24 hours. Welcome to visit our factory. echnical datas and operation manual sent for evaluation. After-sale Service: Training how to instal the machine, training how to use the machine at our factory; Engineers available to service machinery overseas at customers' cost; Packing & Delivery