UTCT
Outdoor Epoxy Resin Insulated Current Transformer
Product parameters: (replaces GE JAK-0C / Alta COM-6)
· Outdoor epoxy resin insulated current transformer
· Max. system voltage: 0.75kV (750V)
· Frequency: 50 / 60Hz
· Rated primary current: 5A – 1000A
· Secondary current: 1A or 5A (customized)
· Accuracy class: 0.15S, 0.15, 0.3, 0.6 (IEC) / 0.15 (ANSI)
· Rated output: up to 20VA
· Core: amorphous alloy
· Standard: ANSI C57.13, IEC
· Type name: UTCT (also available as ERCT, extended range)
· Direct replacement for: GE JAK-0C, Alta Series COM-6 (same ratings, same footprint, drop-in substitute)
Description
UTCT is used for power systems with the max. voltage 0.75kV and frequency of 50 or 60Hz. The product is made of outdoor epoxy resin, which can be used outdoors directly. The secondary junction box adopts a sealed design, which will be waterproof suitable for long-term outdoor use. The secondary box cover is equipped with stainless steel lead seal screws. The secondary cable can output from top of CT.
The interior of the product adopts an amorphous alloy core, the inner hole directly passes through the cable, and the secondary winding adopts high-purity enameled copper wire. The product can also be directly designed for cable outlet without a secondary junction box, preventing users from tampering with the secondary wiring.
The maximum primary current of the product is 1000A, and the secondary current can be customized to 1A or 5A. The product accuracy can achieve IEC standard 0.15S level and ANSI standard 0.15 level. Capacity can be designed to a maximum of 20VA.
It also can be made by ERCT, high accuracy, extended range, to meet 0.15 class from 1% to rating factor.
Products meet with international standard ANSI C57.13 standard.
Direct Replacement for GE JAK-0C & Alta Series COM-6
UTCT is a direct drop-in replacement for GE type JAK-0C and Alta Series type COM-6. If you are currently using GE JAK-0C or Alta Series COM-6 outdoor current transformers, UTCT matches the same rated current range (5A – 1000A), the same max. system voltage 0.75kV (750V), the same accuracy class (ANSI 0.15 / IEC 0.15S) and the same installation footprint — no re-design of the mounting or the cable entry is needed.
UTCT additionally offers: amorphous alloy core for lower metering loss, ANTI-UV outdoor epoxy resin for 10-year outdoor service life, and a stainless-steel lead-sealed secondary junction box. Standard compliance is ANSI C57.13 and IEC 61869, so it is accepted as an equivalent substitute wherever GE JAK-0C or Alta Series COM-6 is specified.
Both the model name JAK-0C (GE) and COM-6 (Alta Series) are cross-referenced here to help you find this product when you search for a replacement or an alternative source.
Service environment
- Air temperature: Maximum temperature: +70°C; Minimum temperature: -20°C
- Humidity: Monthly average humidity 95%; Daily average humidity 90%
- Altitude above sea level: Maximum installation altitude: 1000m
- Ambient air not apparently polluted by corrosive and flammable gas, vapor etc
- No frequent violent shake
Product feature
- High quality ANTI-UV outdoor epoxy resin, meet 10 years service life
- Amorphous alloy core for CT, meet high standard accuracy class
- Round window suitable for cable
- Rated voltage Max to 750V
- Primary current from 5A to 1000A
- Accuracy class CT to 0.15S
- Meet IEC and ANSI standard
Technical data for current transformer
| Rated primary current (A) | Accuracy classes | Accuracy class combination | Accuracy class and output (VA) | |
|---|---|---|---|---|
| 0.15 | 0.3 | |||
| 5 / 10 / 15 / 20 / 25 / 30 / 40 / 50 / 75 / 100 / 150 / 200 / 300 / 400 / 500 / 600 / 800 / 1000 | 0.15 0.3 0.6 |
B-0.1 B-0.2 B-0.5 |
B-0.1 B-0.2 B-0.5 |
B-0.1 B-0.2 B-0.5 |
Output can be designed to a maximum of 20VA. Outline dimension drawing is available in the product catalogue PDF.
General
This Outdoor dry type current transformer used in 0.66kV, 0.75kV. power system, for measuring and protection.
It have been used in power line, or distrubution secondary output cable, and bay-installed switching stations.
The current transformer made from outdoor epoxy resin, amorphous alloy core for metering and high quality CRGO core for protection, primary and secondary use pure electrolytic copper.
Standard
All UNISUN Electric instrument transformers are in conformity with IEC standards, and recommendations IEC 61869. Transformers in conformity with specific country standards can also be supplied. (IEEE C57.13, NBR6855).
Specification data sheet ERCT — extended range version Overall dimension
UTCT is the drop-in replacement for the GE JAK-0C window-type current transformer. The table below reproduces GE’s published JAK-0C product data (GE fact sheet, 600 V / 10 kV BIL) and shows the UNISUN model to order for each ratio — use it to identify the right replacement from an existing nameplate or GE catalog number.Current ratio
PRI : SEC (A)Continuous thermal current rating factor Window I.D.
(inch)Burden
(IEEE 0.3 class)GE JAK-0C
catalog no. (low base)UNISUN
model to order30°C Amb. 55°C Amb. Window-type, single ratio 100:5 4.0 4.0 1.50 B0.2 750X133645 UTCT 100:5 100:5 4.0 4.0 2.60 B0.1 750X133636 UTCT 100:5 150:5 4.0 4.0 2.60 B0.1 750X133964 UTCT 150:5 200:5 4.0 4.0 2.60 B0.5 750X133311 UTCT 200:5 200:5 4.0 2.9 2.60 B0.2 750X133977 UTCT 200:5 200:5 4.0 2.9 3.062 B0.1 750X133973 UTCT 200:5 250:5 4.0 4.0 2.60 B0.5 750X133963 UTCT 250:5 300:5 4.0 2.9 3.062 B0.5 750X133312 UTCT 300:5 400:5 4.0 2.9 3.062 B0.5 750X133313 UTCT 400:5 500:5 3.0 2.4 3.062 B0.5 750X133314 UTCT 500:5 600:5 2.0 1.8 3.062 B0.5 750X133315 UTCT 600:5 800:5 2.0 1.5 3.062 B0.5 750X133316 UTCT 800:5 1,000:5 2.0 1.5 3.062 B0.5 750X133547 UTCT 1000:5 1,200:5 1.5 1.1 3.062 B1.8 750X133501 UTCT 1200:5 * 1,500:5 1.5 1.1 3.062 B1.8 750X133505 UTCT 1500:5 * 2,000:5 1.0 0.7 3.062 B1.8 750X133509 UTCT 2000:5 * 3,000:5 1.0 0.7 3.062 B1.8 750X133513 UTCT 3000:5 * Window-type, dual ratio 200/400:5 2.0/2.0 1.5/1.5 2.60 B0.5 750X133317 UTCT 200/400:5 300/600:5 2.0/2.0 1.5/1.5 3.062 B0.5 750X133318 UTCT 300/600:5 400/800:5 2.0/2.0 1.5/1.5 3.062 B0.5 750X133319 UTCT 400/800:5 1,000/2,000:5 1.5/1.0 1.1/0.7 3.062 B0.5/B1.8 750X133517 UTCT 1000/2000:5 * 1,500/3,000:5 1.3/1.0 1.0/0.7 3.062 B0.5/B1.8 750X133519 UTCT 1500/3000:5 *
The same transformer is also available as ERCT, an extended-range CT built to hold class 0.15 accuracy from 1% of rated current up to the rating factor — not only from the usual 10% of rated current. Use it where the load runs far below the CT rating and billing accuracy still has to hold.
Item
UTCT (standard)
ERCT (extended range)
Accuracy class 0.15S (IEC) / 0.15 (ANSI) 0.15 class from 1% of rated current to rating factor Where the class is guaranteed From 10% of rated current to rating factor From 1% of rated current to rating factor Best for Steady loads near the CT rating Widely varying loads: tenant / sub-metering, seasonal or night-heavy demand, EV charging, meters left on light load Ratios & secondary 5:5 – 1,000:5 · 1 A or 5 A Same ratios · single or dual ratio · 1 A or 5 A Body / installation 0.75 kV outdoor epoxy, sealed secondary box Identical body, footprint and terminal arrangement Order code UTCT 400:5 ERCT 400:5 — state “extended range, class 0.15 from 1%” Standard ANSI C57.13 / IEC 61869 ANSI C57.13 extended-range (ER) design / IEC 61869
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The products are designed in strict accordance with IEC or ANSI standards, and the manufacturing steps meet the technological requirements
Primary winding
High electrolytic copper is used as primary winding, silver base welding material is used at the welding place, and semiconductor shielded paper is wrapped to ensure that the partial discharge tseting data is qualified.
Secondary winding
Large capacity design secondary winding, automatic winding, high insulation and high purity enameled wire, to ensure wide capacity output under standard accuracy.
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