TU_RV / TUP80RV / TUP105R current transformers for insulated cables and bushing insulators of medium-voltage cells
Country: Spain · Model: TU_RV / TUP80RV / TUP105R
These current transformers are fitted on insulated medium-voltage cables or on bushing insulators of MV substation cells for network digitalization. The group includes the low power models TU_RV and TUP80RV with a 225 mV output and TUP105R with a Ø105 mm window for 800–2500 A. They are used for telemetering on outgoing MV cable lines.
- TU_RV (low power)
- TU40RGV Ø40, TU60PRV Ø61, TUP85RV Ø85, TUP140RV Ø140 mm; 300–2000 A; output 225 mV; class 0.5S; burden ≥10 kΩ
- TUP80RV (low power)
- inner Ø83 mm, outer Ø118 mm; 500–1000 A; 225 mV; class 0.2S; Ith 10 kA; mounting on bushing insulators of MV substation cells
- TUP105R
- window Ø105 mm; 800–2500 A; x/1, x/5 A; 2.5–5 VA; 0.5 / 0.2S / 5P20 / 5P10; secondary cable 2×2.5 mm²
- Own insulation
- max. installation voltage (LV) 720 V AC, test voltage 3 kV 1 min — insulation from MV is provided by the cable/bushing insulator
Technical specifications
| TU_RV (low power) | TU40RGV Ø40, TU60PRV Ø61, TUP85RV Ø85, TUP140RV Ø140 mm; 300–2000 A; output 225 mV; class 0.5S; burden ≥10 kΩ |
|---|---|
| TUP80RV (low power) | inner Ø83 mm, outer Ø118 mm; 500–1000 A; 225 mV; class 0.2S; Ith 10 kA; mounting on bushing insulators of MV substation cells |
| TUP105R | window Ø105 mm; 800–2500 A; x/1, x/5 A; 2.5–5 VA; 0.5 / 0.2S / 5P20 / 5P10; secondary cable 2×2.5 mm² |
| Own insulation | max. installation voltage (LV) 720 V AC, test voltage 3 kV 1 min — insulation from MV is provided by the cable/bushing insulator |
| Thermal withstand current | 60 In (TU_RV, TUP105R); dynamic 2.5 Ith |
| Continuous overload | 1.5 In (low power), 1.2 In (TUP105R) |
| Version | polyurethane resin, UL V0, IP65, outdoor installation; colour-coded polarity marking |
| Connection | cable with RJ45 connector (low power) |
| Standards | EN 61869-1, EN 61869-2, EN 61869-8, EN 61869-10 |
Replacement for
TZLM, TZRL, TZLK (zero-sequence); for cable/MV bushing — TZLM, TZRL; with low-level output no direct analogue
selected by purpose and main parameters, please confirm with the manager
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The high potential is separated from the transformer by the insulation of the cable or bushing insulator, so the transformer's own insulation is rated for 720 V AC and a 3 kV test for 1 min. The plastic housing, filled with polyurethane, has IP65 protection and UL V0 flammability, so outdoor mounting does not degrade its characteristics. The TU_RV series includes TU40RGV (Ø40 mm window), TU60PRV (Ø61 mm), TUP85RV (Ø85 mm) and TUP140RV (Ø140 mm) for 300–2000 A with class 0.5S, a burden from 10 kΩ, a thermal current of 1.5 In, Ith 60 In and dynamic 2.5 Ith. The secondary circuit is led out by a cable with an RJ45 connector (pins 1 and 2 are S1 and S2 respectively), insulation class E. TUP80RV has an inner diameter of 83 mm, an outer diameter of 118 mm, a thickness of 27 mm, currents of 500–1000 A, class 0.2S, a short-circuit current of 10 kA and insulation class B. TUP105R is made as a measuring or protection unit, with classes 0.5, 0.2S, 5P20 and 5P10, a burden of 2.5–5 VA, a secondary of x/1 or x/5 A, a 2×2.5 mm² cable and an operating temperature of −5…+55 °C. It complies with EN 61869-1, -2, -8 and -10.
How to choose
For electronic low-level signal inputs, take the low power TU_RV at 225 mV, and choose the window diameter to suit the cable, from Ø40 to Ø140 mm. For bushing insulators of cells, TUP80RV of class 0.2S is suitable. If the instrument has an ordinary 1 or 5 A input or protection is needed, choose TUP105R. For low-voltage busbars without MV, look at TU_R and TUP_R.
Request a price and lead time
TU_RV / TUP80RV / TUP105R current transformers for insulated cables and bushing insulators of medium-voltage cells. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
Can this transformer be fitted on a medium-voltage cable?
Yes, it surrounds the insulated cable, and insulation from the high potential is provided by the cable itself or the bushing insulator. Its own insulation is rated for 720 V AC, with a 3 kV test for 1 min.
What output signal do the low power models have?
A voltage of 225 mV at a burden of at least 10 kΩ, connected by a cable with an RJ45 connector. Class 0.5S for TU_RV and 0.2S for TUP80RV.
What is the overload margin?
For low power the continuous overload is 1.5 In, for TUP105R 1.2 In. The thermal withstand current is 60 In and the dynamic current 2.5 Ith.
Are they suitable for outdoor installation?
Yes, the polyurethane filling, IP65 and UL V0 make it possible to mount them outdoors without loss of characteristics. The operating temperature of TUP105R is −5…+55 °C.
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