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in the EPJS 12kV ?
General Information:
EPJS is a high-precision instrument designed for fully automatic on-site measurement of dielectric loss tangent (tan δ) and capacitance of various high-voltage power equipment in power plants, substations, and other field environments. Thanks to the adoption of frequency conversion technology, it ensures accurate measurement even under strong electric field interference.
Features:
√ English menu interface, with the microprocessor automatically completing the entire measurement process.
√ Suitable for measuring the tan δ and capacitance of high-voltage electrical apparatus in workshops, laboratories, and scientific research institutions. It offers particular advantages in insulation oil loss testing, being convenient, simple, and accurate.
√ Can perform measurements on non-grounded or directly grounded high-voltage electrical equipment using both positive and negative connection methods. It is also capable of measuring the tan δ and the main capacitance values C1 and C2 of capacitive voltage transformers (CVTs).
√ Equipped with a built-in high-voltage step-up transformer and incorporates safety protection features such as zero-crossing switching and lightning surge protection. During the test, it can output high voltage at various levels from 0.1 kV to 12 kV, ensuring simple and safe operation.
√ Provided with the following protection functions:
· High-voltage short-circuit protection
· CVT overvoltage protection
· Poor grounding protection
Technical Specifications:
High voltage output | 0.1~12kV，200mA，50V，30A Increasing by 100V for each level, capacity: 2000VA |
Accuracy | tgδ: ± (reading *1.0% +0.04%) |
Cx: ± (reading * 0.5% +1 PF) |
Resolution | tgδ: 0.001% |
Cx: 0.001pF |
Measurement range | 0.001% |
Internal high pressure: | 3PF ～60000PF/12kV 60PF～1µF/0.5kV |
External high pressure | 3PF ～1.5µF/12kV 60PF～30µF/0.5kV the maximum test current 5A/30~300Hz when the normal connection The maximum test current during reverse wiring is 10KV/5A/30~300Hz |
Test current range | 10µA~5A |
CVT Variable ratio test | Variation ratio measurement accuracy: ± reading *1% The range of the measurement: 10～99999 Phase measurement accuracy: ±0.1° Phase measurement range: 0～359.9° CVT self-excited low voltage output: output voltage 3~50V, output current 3~30A |
Power supply | AC 220V ± 10% 50/60 ± 1% |
Measuring method | a. single frequency: 45(45Hz measuring), 50(50Hz measuring), 55(55Hz measuring), 60(60Hz measuring), 65(65Hz measuring) |
b. different frequency: 50D (45Hz/55Hz measure each time) 60D (55Hz/65Hz measure each time) Automatic frequency conversion |
Harmonic adaptation: | ≤ 3% |
Application condition | -15 ℃－50 ℃ Relative humidity <80% |
Dimension | 460 (L) × 345 (W) × 345 (H) |
Weight | 35 kg (with accessories) |
Printer | Build-in thermal printer |
Packing List:
Control Unit | 1 |
Accessory Carry case | 1 |
High-voltage HVx test cable (Red) | 1 |
Cx-specific test cable (black) | 1 |
Cn-specific (Low voltage wire) test cable (black) | 1 |
Power Cord | 1 |
Grounding Wire | 1 |
Fuse (5A) | 2 |
Print Paper | 1 |
User’s Guide | 1 |
Factory Calibration Cert | 1 |
Quality and Warranty Cert | 1 |
